Planetary and Space Sciences Research Institute (PSSRI)
Huygens-SSP
Experimenter to Archive Interface Control Document
PY-SSP-OU-PR-100-00
Issue 2 Rev 5
30 Nov-06
___________________________
Prepared by: Axel Hagermann
__________________________
and Brijen Hathi
___________________________
Approved by: John C. Zarnecki
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Distribution List
Recipient Organisation Copiest
Olivier Witasse RSSD, ESTEC 1
Joe Zender RSSD, ESTEC 1
Lyle Huber PDS 1
John Zarnecki PSSRI, Open University 1
Mark Leese PSSRI, Open University 1
Change Log
Date Sections Affected Changes
25/05/03, First draft First draft
30/11/2006, Issue 1.0
All Input from OW, LH
06/12/2004 0 'open issues' removed
06/12/2004 3.1 File naming convention & dir structure: 'IMPACT' added,
06/12/2004 1.7 Addresses updated
06/12/2004 1.2 List of contents inserted
06/12/2004 3.2 Time description changed
06/12/2004 All Typo in FORTRAN removed
25/07/2005 1, 2 Reference list updated
25/07/2005 All Sensor sequence harmonised
25/07/2005 2 'Tbc' removed
26/07/2005 2.3. APIS description reviewed
26/07/2005 3 Tables 3,4 amended, housekeeping description added
Change log contd.
Date Sections Affected Changes
26/07/2005 3.4 Directory structure updated
27/07-01/08/2005 4.2 Labels updated
01/08/2005 4.2 Table removed
01/08/2005 4.3 Section added, objects amended
01/08/2005 Appendix Obsolete appendix removed
01/08/2005 2.3 Functional table added
31/10/05 3.4.3 'tbc' removed
17/11/05 2.2 Table 1 amended
21/11/05 3.4.3 superseded in parts
21/02/05 4 Sample labels & object definitions updated
01/03/05 3.4 Table 4 amended
04/07/06 All Typos corrected
04/07/06 2 & 3 Review info added
01/10/06
Acronyms and Abbreviations
ACC-E - Accelerometer / Force Transducer (External) sub-system
ACC-I - Accelerometer (Internal) sub-system
APIS - Acoustic sounder sub-system
APIV - Acoustic velocity sub-system
DDID - ESOC's Data Delivery Interface Document
DEN - Density sub-system
DL - PDS term 'Detached Label'
DN - A/D converters output in 'counts' (PDS term = Digital Number)
DTWG - Descent trajectory working group
EAICD - Experimenter to (Science) Archive Interface Control Document
ESA - European Space Agency
ESOC - European Space Operations Centre
HK - Housekeeping data
NASA - National Aeronautics and Space Administration
PDD - Parachute deployment device
PDS - Planetary Data System
PER - Relative permittivity and conductivity sub-system
PSA - Planetary Science Archive
PSSRI - Planetary and Space Sciences Research Institute
SSP - Surface Science Package
REF - Refractive index sub-system
TBC - to be confirmed
TBD - to be determined
TBW - to be written
THP - Thermal properties sub-system
TIL - 2 axis tilt angle measuring sub-system
List of contents
1 INTRODUCTION 4
1.1 PURPOSE AND SCOPE 4
1.2 CONTENTS 4
1.3 INTENDED READERSHIP 4
1.4 APPLICABLE DOCUMENTS 4
1.5 REFERENCE DOCUMENTS 4
1.6 RELATIONSHIPS TO OTHER INTERFACES 5
1.7 CONTACT NAMES AND ADDRESSES 5
2 OVERVIEW OF PROCESS AND PRODUCT GENERATION 6
2.1 EXPERIMENT OVERVIEW 6
2.2 MEASUREMENTS SUMMARY 6
2.3 SENSORS OVERVIEW 7
2.3.1 Accelerometer External (ACC-E) 7
2.3.2 Accelerometer Internal (ACC-I) 7
2.3.3 Acoustic Properties Instrument - Sonar (API-S) 7
2.3.4 Acoustic Properties Instrument - Velocimeter (API-V) 8
2.3.5 Density Sensor (DEN) 8
2.3.6 Permittivity Sensor (PER) 8
2.3.7 Refractive Index Sensor (REF) 9
2.3.8 Thermal Properties Sensor (THP) 9
2.3.9 Tiltmeter (TIL) 9
2.4 DEFINITION OF SSP OPERATING MODES 10
3 ARCHIVE FORMAT AND CONTENT 11
3.1 FORMAT AND CONVENTIONS 11
3.1.1 Deliveries and Archive Volume Format 11
3.1.2 Data Set ID Formation 11
3.1.3 Data Directory Naming Convention 12
3.1.4 File naming Convention 12
3.2 STANDARDS USED IN DATA PRODUCT GENERATION 12
3.2.1 PDS Standards 12
3.2.2 Time Standards 12
3.2.3 Reference Systems 12
3.2.4 Other Applicable Standards 13
3.3 DATA VALIDATION 13
3.4 CONTENT 13
3.4.1 Volume Set 13
3.4.2 Data Set 13
3.4.3 Directories 14
3.4.4 Derived and other Data Products 16
4 DETAILED INTERFACE SPECIFICATIONS 17
4.1 DATA PRODUCT DESIGN 17
4.2 SAMPLE LABELS 17
4.2.1 ACCE - Data Label 1 17
4.2.2 ACCE - Data Label 2 17
4.2.3 ACCI - Data Label 1 18
4.2.4 ACCI - Data Label 2 19
4.2.5 APIS - Data Label 1 20
4.2.6 APIS - Data Label 2 20
4.2.7 APIS - Data Label 3 21
4.2.8 APIV - Data Label 21
4.2.9 DEN Data Label 22
4.2.10 HK - Data Label 22
4.2.11 IMPACT Data Label 23
4.2.12 PER Data Label 24
4.2.13 REF Data Label 24
4.2.14 THP - Data Label 25
4.2.15 TIL Data Label 25
4.3 DATA PRODUCT DESIGN 27
4.3.1 Data Product Design Example - ACCE Sensor 27
4.3.2 Data Object Definition Example - ACCI sensor 29
4.3.3 Data Product Design - APIS Sensor 32
4.3.4 Data Product design, DEN, HK, PER, THP, TIL 32
4.3.5 Data Product Design - REF Sensor 32
5 APPENDIX: AVAILABLE SOFTWARE TO READ PDS FILES 34
6 APPENDIX: AUXILIARY DATA USAGE 35
7 APPENDIX: EXAMPLE OF DIRECTORY LISTING OF DATA SET 36
1 Introduction
1.1 Purpose and Scope
The primary objective of this EAICD document is to provide a detailed
explanation
of the SSP data ingested into the PSA. It describes data flow, data types and
directory structures for data volumes. The secondary objective of this document
is to provide a formal interface for communication between SSP PI and the
archiving authority. The methods used for interpreting SSP data any further
than given in the archive or a detailed description of the SSP experiment is
beyond the scope of this document. Please refer to reference section for some
further details.
1.2 Contents
This document describes the SSP data as presented to the PDS data archive. It
includes information on how the data is processed, formatted, labelled and
uniquely identified. The document discusses general naming schemes for data
volumes, data sets, data and label files. Standards used to generate the
product are explained.
The design of the data set structure and the data product is given.
Examples of these are given in the appendix.
1.3 Intended Readership
The staff of archiving authority (Planetary Data System for NASA, Planetary
Science Archive for ESA) design team and any potential user of the SSP final
archive.
1.4 Applicable Documents
[AD-1] Planetary Data System Preparation Workbook, February 1, 1995,
Version 3.1, JPL, D-7669, Part 1
[AD-2] Planetary Data System Standards Reference, October 30, 2002,
Version 3.5, JPL, D-7669, Part 2
[AD-3] PY-SSP-RAL-xxxx, Huygens Surface Science Package, On-board
Software Users Guide, Issue 2, August 2004.
[AD-4] HMCS-ICD-DDID, Huygens DDID, Data Delivery Interface Document,
Issue 2.1, September 1996.
[AD-5] PY-SSP-UKC-EID-001, SSP-EID-B, Experiment Interface Control
Document, 23 February 1995
[AD-6] HUY-RSSD-PL-001, Huygens Data Archive Generation, Validation and
Transfer Plan
DRAFT, 1September 2004.
1.5 Reference Documents
[RD-1] J.C. Zarnecki, M.R. Leese, J.R.C. Garry, N. Ghafoor and B. Hathi (2002):
HUYGENS' SURFACE SCIENCE PACKAGE.. Space Science Reviews, Vol. 104(1), p.
591-609
[RD-2] English, M.A., (1995): The development of instrumentation and modelling
for the understanding of Titan. PhD thesis, University of Kent at Canterbury.
[RD-3] Geake, J. E., Mill, C. and Mohammadi, M.S.: 1994, Meas. Sci. Technol.
5, 531.
[RD-4] J. C. Zarnecki and M. Banaszkiewicz, M. Bannister, W. V. Boynton,
P. Challenor, B. Clark, P. M. Daniell, J. Delderfield, M. A. English, M.
Fulchignoni, J. R. C. Garry, J. E. Geake, S. F. Green, B. Hathi, S. Jaroslawski,
M. R. Leese, R. D. Lorenz, J. A. M. McDonnell, N. Merryweather--Clarke,
C. S. Mill, R. J. Miller, D. J. Parker, P. Rabbetts, H. Svedhem, R. F. Turner,
M. J. Wright (1997): The Huygens Surface Science Package, ESA SP-1177, 177-195.
[RD-5] M. K. Bird, M. Heyl, M. Allison, S.W. Asmar, D.H> Atkinson, P. Edenhofer,
D. Plettemeier, R. Wohlmuth, L. Iess & GlL. Tyler (1997) The Huygens Doppler
Wind Experiment, ESA SP-1177, 139-162.
[RD-6] R. Lorenz (1994): Exploring the surface of Titan. Dissertation,
University of Kent, Canterbury.
[RD-7] A. Wilson (ed.)(1997): Huygens - Science, Payload and Mission. ESA
SP-1177.
1.6 Relationships to Other Interfaces
N/A
1.7 Contact Names and Addresses
Axel Hagermann
The Open University
Walton Hall, Milton Keynes
MK7 6AA
United Kingdom
a.hagermann@open.ac.uk
Brijen Hathi
The Open University
Walton Hall, Milton Keynes
MK7 6AA
United Kingdom
b.hathi@open.ac.uk
Mark Leese
The Open University
Walton Hall, Milton Keynes
MK7 6AA
United Kingdom
m.r.leese@open.ac.uk
John Zarnecki
The Open University
Walton Hall, Milton Keynes
MK7 6AA
United Kingdom
j.c.zarnecki@open.ac.uk
2 Overview of Process and Product Generation
Huygens SSP data will be analysed at the PSSRI at the Open University. Descent
data are provided by ESOC (see [AD-4]). Further data include those of
calibrations, carried out mainly at the Open University, the University of
Kent at Canterbury and other Institutions (See [AD-5] for details).
Data types are grouped into Science data and calibration data. All data will
be ingested into the PSA in compliance with [AD-6].
The process of data analysis as described in this document includes the
extraction of SSP packet data from Huygens telemetry packets provided by ESOC,
seperation into the packets from the individual SSP sensors and extraction into
human-readable (PDS-compliant) format. Data are processed using custom software
written in FORTRAN, PYTHON and IDL.
2.1 Experiment Overview
The SSP experiment consists of nine separate sensors that are designed to
measure a wide range of physical properties of Titan's lower atmosphere,
surface, and sub-surface. By measuring a number of physical properties of the
surface it is expected that the SSP will be able to constrain the inferred
composition and structure of the Titan's near-surface environment. Although
the SSP is primarily designed to sense properties of the surface, some of
its sensors will also make measurements of the atmosphere along the probe's
entry path and will complement the data gathered by other experiments on the
Huygens probe.
2.2 Measurements Summary
Table 1 (below) summarises the measurements made by the SSP experiment.
sensor Measured parameters
Derived parameters
ACC-E Impact force Impact force
ACC-I Acceleration Acceleration
API-S Acoustic excitation Sounding information
API-V Time delay in milli seconds Speed of sound and
Mean molecular mass
DEN Strain (of buoyancy float) Density
PER Capacitance Permittivity and conductivity
REF Light intensities Refractive index
THP Resistance Temperature and thermal conductivity
TIL 2-axis tilt angles Tilt angles
HK Temperatures, and other engineering information Temperatures, and other
engineering information
Table 1: SSP experiment - measured and derived parameters summary
The housekeeping sensors (HK) give information about sensor temperatures,
times of mode changes, software glitches, packet counts and other relevant
data. Details can be found in [AD-3].
2.3 Sensors Overview
The following listing of the SSP sensors consists mainly of excerpts from
RD-1 which should be consulted for more detailed information.
2.3.1 Accelerometer External (ACC-E)
The accelerometer subsystem is designed to characterise the immediate
surface of the landing site by recording the dynamic response of two devices
mounted in different positions on the probe. One of the sensors, discussed
by in [RD-6] is designed to sense the force exerted on a pylon that
protrudes from the foredome aperture. The force is sensed by a piezoelectric
ceramic element that is mounted between a hemispherical titanium alloy head and
the pylon shaft. If Huygens lands on a relatively uniform surface the ACC-E
penetrometer will be smoothly driven into the surface material until the
probe's fore-dome strikes the surface, bringing it to a halt. During the
impact process the ACC-E is sampled at a rate of 10 kHz, giving it an
effective depth resolution of 1 mm for a nominal mission impact speed
of 5 m s-1.
2.3.2 Accelerometer Internal (ACC-I)
A single commercially available accelerometer forms the second part of the ACC
sensor. This device is mounted on a foot of the SSP electronics box, which is
fixed to the upper experiment platform. The ACC-I provides information about
the vertical non-static accelerations experienced by the entire probe.
2.3.3 Acoustic Properties Instrument - Sonar (API-S)
Like the ACC subsystem, the API has two separate parts. The first of these is
an active sonar system (API-Sonar) mounted on the front of the Top Hat cavity
pointing downwards. This sensor will measure the effective acoustic
cross-section of the medium within its field of view at a frequency of around
15kHz. Each echo is sampled at a rate of 1kHz, and during the final section
of the probe's descent this sensor may be able to provide information about
the topography of the landing site with a vertical precision of around 0.1 m.
In the case of a liquid touchdown the API-S may also be able to provide lower
bounds to the depth of the liquid in which it has landed.
In the final few hundred metres of Huygens' trajectory the API-S will be
sufficiently close to the surface for it to detect the back-scattered echo
from the surface beneath it. Following the impact of the probe with a liquid
body the API-S will act as a depth sounder, using information gathered from
the Acoustic Properties Instrument-Velocimeter (API-V) on the speed of sound
in the medium. In comparison to its atmospheric operation the API-S operates
with an increased efficiency when immersed simply as a result of the medium's
higher density and its better acoustic coupling to the API-S. Whilst afloat
the API-S should be able to record the depth of the liquid beneath the probe
(up to a maximum depth of 1000m).
2.3.4 Acoustic Properties Instrument - Velocimeter (API-V)
The second portion of the API consists of a pair of piezoelectric transducers
mounted at the front surface of the Top Hat on either side of the cavity.
These sensors measure the speed of sound by transmitting, and subsequently
receiving, a brief 1 MHz acoustic signal. The time interval between
transmission and reception is measured with a precision of 250 ns and the
separation of 0.125 m gives a speed resolution of 8 cm s-1 when operating in
gas at Titan's surface. Throughout the descent these sensors will be driven
and subsequently sampled once a second, giving a detailed profile of the speed
of sound along the probe's trajectory. At least three other sensors in the
probe's payload can sense the atmospheric temperature, and thus the speed of
sound will yield the ratio of gamma (the ratio of specific heats) to m
(mean molecular mass). The next important contribution made by the API-V
is at Titan's surface in the event of the probe landing in a liquid body.
The speed of sound is measured to a precision of 8 m s-1, a fidelity that
corresponds to a mixing ratio of 1.6 % for a methane / ethane ocean.
2.3.5 Density Sensor (DEN)
Upon landing in a liquid the density of any fluid that makes its way into the
cavity of the SSP will be estimated by the DEN sensor. This instrument
measures the upthrust applied by a liquid to a small buoyant float which is
attached to the SSP by a pair of epoxy beams that are equipped with strain
gauges [RD-2].
In addition considerable scope remains for the detection of phenomena that
are secondary to the main role of the SSP. For example, immediately following
the probe's impact with a liquid the DEN may detect the periodic inflow and
outflow of fluid from the SSP cavity. Measurements of the rate at which this
bobbing motion decays will place constraints on the viscosity of the impacted
liquid, a property that is not directly measured by any sensor.
2.3.6 Permittivity Sensor (PER)
In the event of a liquid landing the SSP will also be able to determine a
number of electrical properties of the fluid. The PER device consists of 22
stacked parallel plates, the capacitance of which is measured at a number of
different frequencies. By briefly pulsing the sensor with DC voltages the
conductivity of the surrounding liquid may also be ascertained, placing
constraints on the population of dissolved ions (if any) in the medium.
The PER also carries a thermometer in the form of a silicon diode, which has
a precision of better than 0.5 K.
Although any probable Titan atmosphere has a relative permittivity that is
almost identical to 1, and therefore cannot be detected by PER, at the
tropopause (altitude 40 km) significant quantities of methane/nitrogen may
condense temporarily on the PER sensor. If sufficient material collects on
the PER some or all of the sensing plates may be bridged and the condensate
may thus be detected.
2.3.7 Refractive Index Sensor (REF)
The REF sensor measures the refractive index of a liquid by using a linear
critical angle refractometer, the method and design of which is discussed
in [RD-3]. This device consists of a section of a cylindrical prism that
can be illuminated by collimated sources (light guides fed by light emitting
diodes, LEDs, at 635 nm) that are both internal and external to the prism.
When the REF is immersed in a medium of given refractive index light striking
the interface between the prism and the liquid will experience a critical
angle effect, in which case the light is refracted or reflected. For both
the internal and external illumination only part of the beam is reflected
or refracted onto the detector, the remainder escaping or being reflected
from the prism. A 512 element linear photodiode array is attached to one
face of the prism and this array is used to measure the resulting transition
from light to dark, the position of this transition, or cut-off, being linearly
related to the refractive index of the liquid. The sensor covers the refractive
index range 1.250 to 1.450 with a discrimination of 0.001. The external light
source is provided so that an estimate can be made of the opacity of the ambient
liquid, from a comparison of the illumination profile received from the internal
and external sources.
2.3.8 Thermal Properties Sensor (THP)
The main role of the THP is to measure the thermal conductivity and
diffusivity of the ambient medium in the SSP cavity. Along with the
Acoustic Properties Instrument (API), the THP is designed to sense properties
of both liquid and gaseous media, using two separate sets of redundant hot
wire sensors enclosed in cylindrical shields. By applying a known current
for a fixed duration to the THP's sense wires in each of the four cylindrical
canisters the wires are made to act as regulated heat sources. This method is
covered in detail by Healy et al. (1976). In the close confines of the wires'
shields the transient heat pulse thus generated is lost by conduction to the
medium surrounding the wires at a rate that is determined by the thermal
properties of the material. Measurements of the wires' resistance as a function
of time before and after the heating pulse reveal the initial temperature of
the medium and its thermal properties. Two diameters of platinum wire are used
in the THP, the thinner wires (10 m diameter) are sized for the relatively
low thermal conductivity of the atmosphere, and the thicker 25 m diameter
wires are only driven when the Huygens probe has reached the surface.
A THP measurement is made every minute throughout the atmospheric phase of
the descent and will therefore provide a relatively fine record of the thermal
properties of the atmosphere along Huygens' trajectory.
2.3.9 Tiltmeter (TIL)
One of the important analyses to be carried out after arrival at Titan is the
reconstruction of the probe's motion, i.e. its trajectory, attitude, swing and
spin, as it falls through the atmosphere and then subsequently during any
post-impact dynamics. Throughout Huygens' descent particular aspects of the
probe's motion will be measured with varying precision by three separate
experiments, Doppler Wind Experiment [RD-5], Huygens Atmospheric Structure
Instrument (HASI), and SSP. Of these, TIL is the only device that provides
unambiguous information about the Huygens probe's attitude with respect to the
local vertical rather than its acceleration. Two inclinometers are arranged
to form an orthogonal x-y pair inside the sensor housing which is attached
to the SSP electronics box. During the probe's descent the TIL is sampled
at a rate of 1 Hz.
2.4 Definition of SSP Operating Modes
The SSP operating modes are defined as follows:
M0: Checkout / Diagnostic mode - not used during the real descent
M1: upper atmosphere mode
M2: mid atmosphere mode
M3: lower atmosphere mode
M4: proximity mode
M5: surface mode
M6: extended surface mode
M7: Checkout / Diagnostic mode - not used during the real descent
A functional breakdown of SSP's sensors is given in Table 1.
Atmospheric Modes Surface Modes
Atmospheric Modes
Surface Modes
SENSOR
SSP
Mode 1
Upper Atmosphere
SSP
Mode 2
Mid Atmosphere
SSP
Mode 3
Lower Atmosphere
SSP
Mode 4
Proximity
Mode
SSP
Mode 5
Post
Impact
SSP
Mode 6
Extended Surface Mission
ACC-I
Sampled at 1Hz
Sampled at 1Hz
Sampled at 1Hz
Monitor ACC-I Impact Buffer
Readout ACC-I Impact Buffer
Sampled at 1Hz
ACC-E
Monitor ACC-E Impact Buffer
Readout ACC-E Impact Buffer
REF
Internal, external modes and dark scan every 3 minutes
Single set of scans
Internal, external modes and dark scan every 3 minutes
THP
Sampling in atmospheric
mode
Sampling in surface mode
API-V
Sampled at 1Hz (in alternate directions)
API-S
Sample in Atmospheric Mode
Proximity Mode
Sample in Surface
Mode
DEN
Sampled at 1Hz throughout Modes 1 to 6
TIL
2 axes at 1Hz sampling rate
2 axes at 2Hz sampling rate
PER
Table 1 Functional breakdown of SSP sensors
3 Archive Format and Content
3.1 Format and Conventions
3.1.1 Deliveries and Archive Volume Format
The individual logical archive volumes delivered always contain
" the data from ALL sensors
" the raw data, calibrated data and the calibration data and software
The logical archive volumes will contain one data set per volume. 2 logical
archive volumes were identified:
" Descent data
" Selected laboratory data
The descent dataset contains all data necessary for an analysis the SSP
measurements. Laboratory data will be added on a best effort basis, provided
they are considered helpful in the analysis.
The SSP sensor housekeeping data and the SSP status data will always be
archived similar to other sensor data within the appropriate data sets.
3.1.2 Data Set ID Formation
The following data sets are foreseen:
" HP-SSA-SSP-3-DESCENT-V1.0
3.1.3 Data Directory Naming Convention
For all data sets the following directory naming scheme will be used:
/DATA/{type}/{dpl}/{sensor}/filename, with
" type = {DESCENT}
" dpl = {RAW, CALIBRATED}, with dpl standing for data processing level
" sensor = {ACCI, ACCE, APIS, APIV, DEN, HK, IMPACT, PER, REF, THP, TIL, STATUS}
The calibration data will be archived in the CALIB directory below the root
directory, as
" /CALIB/SSP_CAL.ASC
3.1.4 File naming Convention
The following file naming scheme will be used for all data sets:
SSP_{sensor}_{mode}_{id}_{data processing level}_{spec}, with
" sensor = {ACCI, ACCE, APIS, APIV, DEN, HK, IMPACT, PER, REF, THP, TIL,
STATUS}
" mode = {0, 1, 2, 3, 4, 5, 6, 7, 8, 123, 1236, 123456}, these modes represent
the SSP mode as defined in [AD-3]
" id= {0,1,2}, data type identifier as defined in [AD-3]
" data processing level = {R, C}, for raw and calibrated data respectively
" spec = {ATMOS, PROX, SURF, EXTD, IMPACT, METHAN, ETHAN, �.}, the specs give
additional information on the mission phase or the laboratory conditions.
3.2 Standards Used in Data Product Generation
3.2.1 PDS Standards
PDS Standard version 3.5 is used for the design of the SSP archive.
3.2.2 Time Standards
The timing information used in all SSP data is derived from the Huygens Probe
clock. This clock starts at zero (T0 as defined by the Probe's firing of
the PDD) and has resolution of 2 milliseconds. The format used to represent
SSP time is a REAL number consisting of seconds (integer part) and
milliseconds (fractional part of the number) . Examples of the time format
are given by the parameters: SC_CLOCK_START_COUNT and SC_CLOCK_STOP_COUNT.
3.2.3 Reference Systems
TBD by the DTWG
3.2.4 Other Applicable Standards
No other applicable standards are used.
3.3 Data Validation
Science validation will be performed during data analysis. Descent
data can be compared to laboratory tests. Dataset completeness will be
verified manually at each revision of the dataset and reviewed before
release to the public.
Compliance of SSP datasets with PDS standards on structural as well as
label level will be verified prior to ingestion using the PVV tool
delivered by ESTEC (TBC).
3.4 Content
3.4.1 Volume Set
The SSP team will aim to deliver three logical archive volumes. The volumes
names and volume ids are the following (tbc):
Volume Name Volume ID Data Set ID
HUYGENS PROBE DESCENT SSP DATA RECORD UK_ESA_PSA_HP_1001
(tbc), as provided by PSA HP-SSA-SSP-3/4-DESCENT-V1.0
HUYGENS PROBE FLIGHT CHECK OUTS SSP DATA RECORD UK_ESA_PSA_HP_1002
(tbc), as provided by PSA HP-CRU-SSP-3/4-FLIGHT-CHECK-OUTS-V1.0
Table 2: Proposed SSP Data (or 'logical archive volumes') for PDS archive
3.4.2 Data Set
Table 3 gives the definition of the data set name and data set id:
Data Set ID Data Set Name
HP-SSA-SSP-3/4-DESCENT-V1.0
HUYGENS SSP DESCENT RAW AND CALIBRATED DATA V1.0
Table 3: SSP Data sets description
Table 4 describes the data types used for the raw data, data processing
level 3 in the PDS standard. The raw data will contain the DN of the A/D
converters from the individual sensors and for some of these DN, the data
sets will contain the corresponding voltages in addition. DL is used to
identify Detached Label. The IMPACT packets will be handled separately.
For details of table sizes refer to the template labels in the next section.
Sensor HP-SSA-SSP-3/4-DESCENT
HP-CRU-SSP-3/4-FLIGHT-CHECK-OUTS
HP-CAL-SSP-3-LABORATORY
ACC-E DL + table(column,time series) 5 (impact) Same as
'HP-SSA-SSP-3/4-DESCENT'
N/A
DL + table(column,time series) 1,2,3 (stimulus)
ACC-I DL+ table 5 Same as
'HP-SSA-SSP-3/4-DESCENT' N/A
DL + table 1,2,3,5,6
API-S DL + table (mode 2,3)
DL + table (mode 4,5)
DL + table (mode 6) Same as
'HP-SSA-SSP-3/4-DESCENT'
N/A
API-V DL + table ( n x 3 ) (all modes) Same as
'HP-SSA-SSP-3/4-DESCENT' N/A
DEN DL + table (all modes) Same as
'HP-SSA-SSP-3/4-DESCENT' N/A
HK DL + table Same as
'HP-SSA-SSP-3/4-DESCENT' N/A
IMPACT DL + table Same as
'HP-SSA-SSP-3/4-DESCENT' N/A
PER Dl + table (all modes) Same as
'HP-SSA-SSP-3/4-DESCENT' N/A
REF DL+ table (all modes) Same as
'HP-SSA-SSP-3/4-DESCENT' N/A
STATUS DL + table
(TBD) Same as
'HP-SSA-SSP-3/4-DESCENT' N/A
THP DL + table Same as
'HP-SSA-SSP-3/4-DESCENT' N/A
TIL DL + table Same as
'HP-SSA-SSP-3/4-DESCENT' N/A
Table 4: SSP data types and presentation to the PDS archive - data processing
level 3
3.4.3 Directories
Directories are defined in Table 6
Top-Level Directory Structure for a SSP data volume
ROOT AAREADME.TXT description of volume contents
ERRATA.TXT overview of anomalies and errors
VOLDESC.CAT description of the contents of the logical volume
CATALOG CATINFO.TXT text description of the directory contents
MISSION.CAT PDS catalog object for Mission
INST.CAT brief description of the SSP Sensors
INSTHOST.CAT brief description of the Instrument Host
DATASET.CAT brief description of the reduced data
PERSON.CAT description of key persons involved in SSP
TARGET.CAT brief description of the targets of the mission
REFERENCE.CAT References used in catalogue files
SOFT.CAT Obsolete
CALIB SSP_CAL.* Calibration file
DOCUMENT
DOCINFO.TXT description of the content of the Document Directory
SSP_EAICD.PDF contains the SSP EAICD
SSP_SUM.PDF Software user manual for SSP = [AD-3]
Others [RD-4], PHD_GHAFOOR, PHD_LORENZ, �.
INDEX
INDEX.LBL detached PDS label to describe INDEX.TAB
INDEX.TAB PDS table, listing all data files included in the volume
INDXINFO.TXT N/A
DATA
(each data file is described in the accompanying detached PDS label) {type}
RAW {sensor} {file} Data file
Where
" type = { DESCENT}
dpl = {RAW, CALIBRATED},
sensor = {ACC, ACCE, APIS,APIV, DEN, HK, IMPACT, PER, REF, STATUS, THP, TIL}
Table 6: Overview of the SSP data volume structure
Root Directory
CALIB Directory
The calibration data will be archived in the CALIB directory below the root
directory, as
" /CALIB/SSP_CAL.ASC
for the sensors ACC, ACCE, APIS, APIV, DEN, HK, IMPACT, PER, REF, STATUS,
THP, TIL
Data from the HP-CRU-SSP-3/4-FLIGHT-CHECK-OUTS data set will be provided
and added to the delivery of the descent data sets on a best effort basis.
The calibration information will not be updated in this data set. A note
will be put in the catalog files to explicitely warn future users of this
fact and point them to the calibration information that will be delivered
with the descent data set that might have been updated and improved.
CATALOG Directory
This directory contains catalog files.
INDEX directory
This directory contains index files and labels.
Browse Directory and Browse Files
Not envisaged.
Geometry Directory
N/A
SOFTWARE Directory
N/A
GAZETTER Directory
N/A.
Label Directory
N/A
DOCUMENTS Directory
Will contain the documents necessary for analysing SSP data.
This directory will contain at least the following documents:
" On-board Software User Guide [AD-3]
" EID-B [AD-5]
" SP-1177, SSP [RD-4]
" Publication in scientific journals
The format of the documentation may vary and may be very old. Reformatting is
done on a best effort basis. The conversion to ASCII format will also be done
on a best effort basis. Documents that cause a format problem will be
provided as they are (i.e. in pdf, TIFF or Word .doc format) in the extras
directory. Important images and diagrams will be converted to PNG or JPG format.
EXTRAS Directory
Digital images of test equipment, sensors etc will be put on this
directory. Types and sizes is TBD.
DATA Directory
see section 3.1.3
Pre-Flight Data
The following pre-flight data are available:
Pre-Flight Data Status Expected Data Volume
Laboratory data Selected data will be archived TBD
Campaign data Not available n/a
EMC data Included in laboratory data n/a
In-Flight Data
In-Flight Data Status Expected Data Volume
In-flight check-outs will be archived 14 * ~50Mbytes
Descent trajectory Will be archived < 1MByte
3.4.4 Derived and other Data Products
N/A
4 Detailed Interface Specifications
Data will be received by PSSRI as described in [AD-4]. Datasets will be
ingested into the PSA using the interfaces described in [AD-6]. Dataset
integrity will be verified using the tools provided by ESOC (TBC).
4.1 Data Product Design
Descent data products will be tables of 2 to 1129 colums, depending on
the type of SSP sensor, with detached labels. Calibration data will be
delivered in tables or as PDF documents.
4.2 Sample Labels
Sample labels in this document are subject to revision once processing
software has been completed.
4.2.1 ACCE - Data Label 1
PDS_VERSION_ID = PDS3
/* FILE CHARACTERISTICS DATA ELEMENTS */
RECORD_TYPE = FIXED_LENGTH
RECORD_BYTES = 72
FILE_RECORDS = 512
/* DATA OBJECT POINTER IDENTIFICATION ELEMENTS */
^TABLE = "SSP_ACCE_057_1_R_IMPACT.TAB"
/* INSTRUMENT AND DETECTOR DESCRIPTIVE DATA ELEMENTS */
FILE_NAME = "SSP_ACCE_057_1_R_IMPACT.LBL"
DATA_SET_ID = "HP-SSA-SSP-3/4-DESCENT-V1.0"
DATA_SET_NAME = "HUYGENS DESCENT RAW AND CALIBRATED DATA"
PRODUCT_ID = "SSP_ACCE_057_1_R_IMPACT.LBL"
PRODUCT_CREATION_TIME = 2005-02-01T00:00:00
MISSION_NAME = "CASSINI-HUYGENS"
INSTRUMENT_HOST_NAME = "HUYGENS PROBE"
INSTRUMENT_HOST_ID = HP
MISSION_PHASE_NAME = "DESCENT"
PRODUCT_TYPE = EDR
START_TIME = 2005-01-14T11:38:10.4600
STOP_TIME = 2005-01-14T11:38:10.5111
SPACECRAFT_CLOCK_START_COUNT = 8869.7600
SPACECRAFT_CLOCK_STOP_COUNT = 8869.8111
NATIVE_START_TIME = 8869.7600
NATIVE_STOP_TIME = 8869.8111
PRODUCER_ID = "HP_SSP_OU"
PRODUCER_FULL_NAME = "AXEL HAGERMANN"
PRODUCER_INSTITUTION_NAME = "OPEN UNIVERSITY, PSSRI"
TARGET_NAME = "TITAN"
4.2.2 ACCE - Data Label 2
PDS_VERSION_ID = PDS3
/* FILE CHARACTERISTICS DATA ELEMENTS */
RECORD_TYPE = FIXED_LENGTH
RECORD_BYTES = 2132
FILE_RECORDS = 3
/* DATA OBJECT POINTER IDENTIFICATION ELEMENTS */
^TABLE = "SSP_ACCE_123_2_R_ATMOS.TAB"
/* INSTRUMENT AND DETECTOR DESCRIPTIVE DATA ELEMENTS */
FILE_NAME = "SSP_ACCE_123_2_R_ATMOS.LBL"
DATA_SET_ID = "HP-SSA-SSP-3/4-DESCENT-V1.0"
DATA_SET_NAME = "HUYGENS DESCENT RAW AND CALIBRATED DATA"
PRODUCT_ID = "SSP_ACCE_123_2_R_ATMOS.LBL"
PRODUCT_CREATION_TIME = 2005-02-01T00:00:00
MISSION_NAME = "CASSINI-HUYGENS"
INSTRUMENT_HOST_NAME = "HUYGENS PROBE"
INSTRUMENT_HOST_ID = HP
MISSION_PHASE_NAME = "DESCENT"
PRODUCT_TYPE = EDR
START_TIME = 2005-01-14T09:11:22.7100
STOP_TIME = 2005-01-14T10:35:20.7060
SPACECRAFT_CLOCK_START_COUNT = 62.0100
SPACECRAFT_CLOCK_STOP_COUNT = 5100.0060
NATIVE_START_TIME = 62.0100
NATIVE_STOP_TIME = 5100.0060
PRODUCER_ID = "HP_SSP_OU"
PRODUCER_FULL_NAME = "AXEL HAGERMANN"
PRODUCER_INSTITUTION_NAME = "OPEN UNIVERSITY, PSSRI"
TARGET_NAME = "TITAN"
4.2.3 ACCI - Data Label 1
PDS_VERSION_ID = PDS3
/* FILE CHARACTERISTICS DATA ELEMENTS */
RECORD_TYPE = FIXED_LENGTH
RECORD_BYTES = 72
FILE_RECORDS = 512
/* DATA OBJECT POINTER IDENTIFICATION ELEMENTS */
^TABLE = "SSP_ACCI_057_1_R_IMPACT.TAB"
/* INSTRUMENT AND DETECTOR DESCRIPTIVE DATA ELEMENTS */
FILE_NAME = "SSP_ACCI_057_1_R_IMPACT.LBL"
DATA_SET_ID = "HP-SSA-SSP-3/4-DESCENT-V1.0"
DATA_SET_NAME = "HUYGENS DESCENT RAW AND CALIBRATED DATA"
PRODUCT_ID = "SSP_ACCI_057_1_R_IMPACT.LBL"
PRODUCT_CREATION_TIME = 2005-02-07T00:00:00
MISSION_NAME = "CASSINI-HUYGENS"
INSTRUMENT_HOST_NAME = "HUYGENS PROBE"
INSTRUMENT_HOST_ID = HP
MISSION_PHASE_NAME = "DESCENT"
PRODUCT_TYPE = EDR /* EDR for RAW, RDR for calibrated data,
tbc */
START_TIME = 2005-01-14T11:38:10.4700
STOP_TIME = 2005-01-14T11:38:11.4920
SPACECRAFT_CLOCK_START_COUNT = 8869.7700
SPACECRAFT_CLOCK_STOP_COUNT = 8870.7920
NATIVE_START_TIME = 8869.7700
NATIVE_STOP_TIME = 8870.7920
PRODUCER_ID = "HP_SSP_OU"
PRODUCER_FULL_NAME = "AXEL HAGERMANN"
PRODUCER_INSTITUTION_NAME = "OPEN UNIVERSITY, PSSRI"
TARGET_NAME = "TITAN"
4.2.4 ACCI - Data Label 2
PDS_VERSION_ID = PDS3
/* FILE CHARACTERISTICS DATA ELEMENTS */
RECORD_TYPE = FIXED_LENGTH
RECORD_BYTES = 1452
FILE_RECORDS = 1
/* DATA OBJECT POINTER IDENTIFICATION ELEMENTS */
^TABLE = "SSP_ACCI_1_2_R_ATMOS.TAB"
/* INSTRUMENT AND DETECTOR DESCRIPTIVE DATA ELEMENTS */
FILE_NAME = "SSP_ACCI_1_2_R_ATMOS.LBL"
DATA_SET_ID = "HP-SSA-SSP-3/4-DESCENT-V1.0"
DATA_SET_NAME = "HUYGENS DESCENT RAW AND CALIBRATED DATA"
PRODUCT_ID = "SSP_ACCI_1_2_R_ATMOS.LBL"
PRODUCT_CREATION_TIME = 2004-10-07T00:00:00
MISSION_NAME = "CASSINI-HUYGENS"
INSTRUMENT_HOST_NAME = "HUYGENS PROBE"
INSTRUMENT_HOST_ID = HP
MISSION_PHASE_NAME = "DESCENT"
PRODUCT_TYPE = EDR
START_TIME = 2005-01-14T09:11:16.0000
STOP_TIME = 2005-01-14T09:11:16.0000
SPACECRAFT_CLOCK_START_COUNT = 55.3000
SPACECRAFT_CLOCK_STOP_COUNT = 55.3000
NATIVE_START_TIME = 55.3000
NATIVE_STOP_TIME = 55.3000
PRODUCER_ID = "HP_SSP_OU"
PRODUCER_FULL_NAME = "AXEL HAGERMANN"
PRODUCER_INSTITUTION_NAME = "OPEN UNIVERSITY, PSSRI"
TARGET_NAME = "TITAN"
ACCI - Data Label 3
PDS_VERSION_ID = PDS3
/* FILE CHARACTERISTICS DATA ELEMENTS */
RECORD_TYPE = FIXED_LENGTH
RECORD_BYTES = 102
FILE_RECORDS = 10998
/* DATA OBJECT POINTER IDENTIFICATION ELEMENTS */
^TABLE = "SSP_ACCI_1236_0_R_ATMOS.TAB"
/* INSTRUMENT AND DETECTOR DESCRIPTIVE DATA ELEMENTS */
FILE_NAME = "SSP_ACCI_1236_0_R_ATMOS.LBL"
DATA_SET_ID = "HP-SSA-SSP-3/4-DESCENT-V1.0"
DATA_SET_NAME = "HUYGENS DESCENT RAW AND CALIBRATED DATA"
PRODUCT_ID = "SSP_ACCI_1236_0_R_ATMOS.LBL"
PRODUCT_CREATION_TIME = 2005-02-07T00:00:00
MISSION_NAME = "CASSINI-HUYGENS"
INSTRUMENT_HOST_NAME = "HUYGENS PROBE"
INSTRUMENT_HOST_ID = HP
MISSION_PHASE_NAME = "DESCENT"
PRODUCT_TYPE = EDR /* EDR for RAW, RDR for calibrated data,
tbc */
START_TIME = 2005-01-14T09:11:22.0440
STOP_TIME = 2005-01-14T12:47:28.5880
SPACECRAFT_CLOCK_START_COUNT = 61.3440
SPACECRAFT_CLOCK_STOP_COUNT = 13027.8880
NATIVE_START_TIME = 61.3440
NATIVE_STOP_TIME = 13027.8880
PRODUCER_ID = "HP_SSP_OU"
PRODUCER_FULL_NAME = "AXEL HAGERMANN"
PRODUCER_INSTITUTION_NAME = "OPEN UNIVERSITY, PSSRI"
TARGET_NAME = "TITAN"
4.2.5 APIS - Data Label 1
PDS_VERSION_ID = PDS3
/* FILE CHARACTERISTICS DATA ELEMENTS */
RECORD_TYPE = FIXED_LENGTH
RECORD_BYTES = 572
FILE_RECORDS = 4615
/* DATA OBJECT POINTER IDENTIFICATION ELEMENTS */
^TABLE = "SSP_APIS_23_0_R_ATMOS.TAB"
/* INSTRUMENT AND DETECTOR DESCRIPTIVE DATA ELEMENTS */
FILE_NAME = "SSP_APIS_23_0_R_ATMOS.LBL"
DATA_SET_ID = "HP-SSA-SSP-3/4-DESCENT-V1.0"
DATA_SET_NAME = "HUYGENS DESCENT RAW AND CALIBRATED DATA"
PRODUCT_ID = "SSP_APIS_23_0_R_ATMOS.LBL"
PRODUCT_CREATION_TIME = 2005-02-01T00:00:00
MISSION_NAME = "CASSINI-HUYGENS"
INSTRUMENT_HOST_NAME = "HUYGENS PROBE"
INSTRUMENT_HOST_ID = HP
MISSION_PHASE_NAME = "DESCENT"
PRODUCT_TYPE = EDR
START_TIME = 2005-01-14T09:20:20.7860
STOP_TIME = 2005-01-14T11:10:19.5860
SPACECRAFT_CLOCK_START_COUNT = 600.0860
SPACECRAFT_CLOCK_STOP_COUNT = 7198.8860
NATIVE_START_TIME = 600.0860
NATIVE_STOP_TIME = 7198.8860
PRODUCER_ID = "HP_SSP_OU"
PRODUCER_FULL_NAME = "AXEL HAGERMANN"
PRODUCER_INSTITUTION_NAME = "OPEN UNIVERSITY, PSSRI"
TARGET_NAME = "TITAN"
4.2.6 APIS - Data Label 2
PDS_VERSION_ID = PDS3
/* FILE CHARACTERISTICS DATA ELEMENTS */
RECORD_TYPE = FIXED_LENGTH
RECORD_BYTES = 2772
FILE_RECORDS = 654
/* DATA OBJECT POINTER IDENTIFICATION ELEMENTS */
^TABLE = "SSP_APIS_4_0_R_PROX.TAB"
/* INSTRUMENT AND DETECTOR DESCRIPTIVE DATA ELEMENTS */
FILE_NAME = "SSP_APIS_4_0_R_PROX.LBL"
DATA_SET_ID = "HP-SSA-SSP-3/4-DESCENT-V1.0"
DATA_SET_NAME = "HUYGENS DESCENT RAW AND CALIBRATED DATA"
PRODUCT_ID = "SSP_APIS_4_0_R_PROX.LBL"
PRODUCT_CREATION_TIME = 2005-10-07T00:00:00
MISSION_NAME = "CASSINI-HUYGENS"
INSTRUMENT_HOST_NAME = "HUYGENS PROBE"
INSTRUMENT_HOST_ID = HP
MISSION_PHASE_NAME = "DESCENT"
PRODUCT_TYPE = EDR /* EDR for RAW, RDR for calibrated data, tbc */
START_TIME = 2005-01-14T11:10:20.8040
STOP_TIME = 2005-01-14T11:40:44.2180
SPACECRAFT_CLOCK_START_COUNT = 7200.1040
SPACECRAFT_CLOCK_STOP_COUNT = 9023.5180
NATIVE_START_TIME = 7200.1040
NATIVE_STOP_TIME = 9023.5180
PRODUCER_ID = "HP_SSP_OU"
PRODUCER_FULL_NAME = "AXEL HAGERMANN"
PRODUCER_INSTITUTION_NAME = "OPEN UNIVERSITY, PSSRI"
TARGET_NAME = "TITAN"
4.2.7 APIS - Data Label 3
PDS_VERSION_ID = PDS3
/* FILE CHARACTERISTICS DATA ELEMENTS */
RECORD_TYPE = FIXED_LENGTH
RECORD_BYTES = 12782
FILE_RECORDS = 92
/* DATA OBJECT POINTER IDENTIFICATION ELEMENTS */
^TABLE = "SSP_APIS_6_0_R_EXTD.TAB"
/* INSTRUMENT AND DETECTOR DESCRIPTIVE DATA ELEMENTS */
FILE_NAME = "SSP_APIS_6_0_R_EXTD.LBL"
DATA_SET_ID = "HP-SSA-SSP-3/4-DESCENT-V1.0"
DATA_SET_NAME = "HUYGENS DESCENT RAW AND CALIBRATED DATA"
PRODUCT_ID = "SSP_APIS_6_0_R_EXTD.LBL"
PRODUCT_CREATION_TIME = 2005-10-07T00:00:00
MISSION_NAME = "CASSINI-HUYGENS"
INSTRUMENT_HOST_NAME = "HUYGENS PROBE"
INSTRUMENT_HOST_ID = HP
MISSION_PHASE_NAME = "DESCENT"
PRODUCT_TYPE = EDR
START_TIME = 2005-01-14T11:41:21.1360
STOP_TIME = 2005-01-14T12:46:26.9380
SPACECRAFT_CLOCK_START_COUNT = 9060.4360
SPACECRAFT_CLOCK_STOP_COUNT = 12966.2380
NATIVE_START_TIME = 9060.4360
NATIVE_STOP_TIME = 12966.2380
PRODUCER_ID = "HP_SSP_OU"
PRODUCER_FULL_NAME = "AXEL HAGERMANN"
PRODUCER_INSTITUTION_NAME = "OPEN UNIVERSITY, PSSRI"
TARGET_NAME = "TITAN"
4.2.8 APIV - Data Label
PDS_VERSION_ID = PDS3
/* FILE CHARACTERISTICS DATA ELEMENTS */
RECORD_TYPE = FIXED_LENGTH
RECORD_BYTES = 82
FILE_RECORDS = 12132
/* DATA OBJECT POINTER IDENTIFICATION ELEMENTS */
^TABLE = "SSP_APIV_123456_0_R_ATMOS.TAB"
/* INSTRUMENT AND DETECTOR DESCRIPTIVE DATA ELEMENTS */
FILE_NAME = "SSP_APIV_123456_0_R_ATMOS.LBL"
DATA_SET_ID = "HP-SSA-SSP-3/4-DESCENT-V1.0"
DATA_SET_NAME = "HUYGENS DESCENT RAW AND CALIBRATED DATA"
PRODUCT_ID = "HP-SSP-DEN-M123456-R.LBL"
PRODUCT_CREATION_TIME = 2005-02-01T00:00:00
MISSION_NAME = "CASSINI-HUYGENS"
INSTRUMENT_HOST_NAME = "HUYGENS PROBE"
INSTRUMENT_HOST_ID = HP
MISSION_PHASE_NAME = "DESCENT"
PRODUCT_TYPE = EDR
START_TIME = 2005-01-14T09:20:20.7060
STOP_TIME = 2005-01-14T12:47:09.2600
SPACECRAFT_CLOCK_START_COUNT = 600.0060
SPACECRAFT_CLOCK_STOP_COUNT = 13008.5600
NATIVE_START_TIME = 600.0060
NATIVE_STOP_TIME = 13008.5600
PRODUCER_ID = "HP_SSP_OU"
PRODUCER_FULL_NAME = "AXEL HAGERMANN"
PRODUCER_INSTITUTION_NAME = "OPEN UNIVERSITY, PSSRI"
TARGET_NAME = "TITAN"
4.2.9 DEN Data Label
PDS_VERSION_ID = PDS3
/* FILE CHARACTERISTICS DATA ELEMENTS */
RECORD_TYPE = FIXED_LENGTH
RECORD_BYTES = 72
FILE_RECORDS = 12640
/* DATA OBJECT POINTER IDENTIFICATION ELEMENTS */
^TABLE = "SSP_DEN_123456_0_R_ATMOS.TAB"
/* INSTRUMENT AND DETECTOR DESCRIPTIVE DATA ELEMENTS */
FILE_NAME = "SSP_DEN_123456_0_R_ATMOS.LBL"
DATA_SET_ID = "HP-SSA-SSP-3/4-DESCENT-V1.0"
DATA_SET_NAME = "HUYGENS DESCENT RAW AND CALIBRATED DATA"
PRODUCT_ID = "SSP_DEN_123456_0_R_ATMOS.LBL"
PRODUCT_CREATION_TIME = 2005-02-01T00:00:00
MISSION_NAME = "CASSINI-HUYGENS"
INSTRUMENT_HOST_NAME = "HUYGENS PROBE"
INSTRUMENT_HOST_ID = HP
MISSION_PHASE_NAME = "DESCENT"
PRODUCT_TYPE = EDR
START_TIME = 2005-01-14T09:11:21.4840
STOP_TIME = 2005-01-14T12:46:33.0760
SPACECRAFT_CLOCK_START_COUNT = 60.7840
SPACECRAFT_CLOCK_STOP_COUNT = 12972.3760
NATIVE_START_TIME = 60.7840
NATIVE_STOP_TIME = 12972.3760
PRODUCER_ID = "HP_SSP_OU"
PRODUCER_FULL_NAME = "AXEL HAGERMANN"
PRODUCER_INSTITUTION_NAME = "OPEN UNIVERSITY, PSSRI"
TARGET_NAME = "TITAN"
4.2.10 HK - Data Label
DS_VERSION_ID = PDS3
/* FILE CHARACTERISTICS DATA ELEMENTS */
RECORD_TYPE = FIXED_LENGTH
RECORD_BYTES = 1092
FILE_RECORDS = 638
/* DATA OBJECT POINTER IDENTIFICATION ELEMENTS */
^TABLE = "SSP_HK_123456_0_R_ATMOS.TAB"
/* INSTRUMENT AND DETECTOR DESCRIPTIVE DATA ELEMENTS */
FILE_NAME = "SSP_HK_123456_0_R_ATMOS.LBL"
DATA_SET_ID = "HP-SSA-SSP-3-DESCENT-V1.0"
DATA_SET_NAME = "HUYGENS DESCENT RAW AND CALIBRATED DATA"
PRODUCT_ID = "SSP_HK_123456_0_R_ATMOS.LBL"
PRODUCT_CREATION_TIME = 2005-02-01T00:00:00
MISSION_NAME = "CASSINI-HUYGENS"
INSTRUMENT_HOST_NAME = "HUYGENS PROBE"
INSTRUMENT_HOST_ID = HP
MISSION_PHASE_NAME = "DESCENT"
PRODUCT_TYPE = EDR
START_TIME = 2005-01-14T09:11:21.1060
STOP_TIME = 2005-01-14T12:47:46.9940
SPACECRAFT_CLOCK_START_COUNT = 60.4060
SPACECRAFT_CLOCK_STOP_COUNT = 13046.2940
NATIVE_START_TIME = 60.4060
NATIVE_STOP_TIME = 13046.2940
PRODUCER_ID = "HP_SSP_OU"
PRODUCER_FULL_NAME = "AXEL HAGERMANN"
PRODUCER_INSTITUTION_NAME = "OPEN UNIVERSITY, PSSRI"
TARGET_NAME = "TITAN"
4.2.11 IMPACT Data Label
PDS_VERSION_ID = PDS3
/* FILE CHARACTERISTICS DATA ELEMENTS */
RECORD_TYPE = FIXED_LENGTH
RECORD_BYTES = 812
FILE_RECORDS = 8
/* DATA OBJECT POINTER IDENTIFICATION ELEMENTS */
^TABLE = "SSP_IMPACT_5_0_R_SURF.TAB"
/* INSTRUMENT AND DETECTOR DESCRIPTIVE DATA ELEMENTS */
FILE_NAME = "SSP_IMPACT_5_0_R_SURF.LBL"
DATA_SET_ID = "HP-SSA-SSP-3/4-DESCENT-V1.0"
DATA_SET_NAME = "HUYGENS DESCENT RAW AND CALIBRATED DATA"
PRODUCT_ID = "SSP_IMPACT_5_0_R_SURF.LBL"
PRODUCT_CREATION_TIME = 2005-02-01T00:00:00
MISSION_NAME = "CASSINI-HUYGENS"
INSTRUMENT_HOST_NAME = "HUYGENS PROBE"
INSTRUMENT_HOST_ID = HP
MISSION_PHASE_NAME = "DESCENT"
PRODUCT_TYPE = EDR
START_TIME = 2005-01-14T11:38:10.4700
STOP_TIME = 2005-01-14T11:38:10.4700
SPACECRAFT_CLOCK_START_COUNT = 8869.7700
SPACECRAFT_CLOCK_STOP_COUNT = 8869.7700
NATIVE_START_TIME = 8869.7700
NATIVE_STOP_TIME = 8869.7700
PRODUCER_ID = "HP_SSP_OU"
PRODUCER_FULL_NAME = "AXEL HAGERMANN"
PRODUCER_INSTITUTION_NAME = "OPEN UNIVERSITY, PSSRI"
TARGET_NAME = "TITAN"
4.2.12 PER Data Label
PDS_VERSION_ID = PDS3
/* FILE CHARACTERISTICS DATA ELEMENTS */
RECORD_TYPE = FIXED_LENGTH
RECORD_BYTES = 122
FILE_RECORDS = 1332
/* DATA OBJECT POINTER IDENTIFICATION ELEMENTS */
^TABLE = "SSP_PER_123456_0_R_ATMOS.TAB"
/* INSTRUMENT AND DETECTOR DESCRIPTIVE DATA ELEMENTS */
FILE_NAME = "SSP_PER_123456_0_R_ATMOS.LBL"
DATA_SET_ID = "HP-SSA-SSP-3/4-DESCENT-V1.0"
DATA_SET_NAME = "HUYGENS DESCENT RAW AND CALIBRATED DATA"
PRODUCT_ID = "SSP_PER_123456_0_R_ATMOS.LBL"
PRODUCT_CREATION_TIME = 2005-02-01T00:00:00
MISSION_NAME = "CASSINI-HUYGENS"
INSTRUMENT_HOST_NAME = "HUYGENS PROBE"
INSTRUMENT_HOST_ID = HP
MISSION_PHASE_NAME = "DESCENT"
PRODUCT_TYPE = EDR
START_TIME = 2005-01-14T09:11:31.1380
STOP_TIME = 2005-01-14T12:47:43.7180
SPACECRAFT_CLOCK_START_COUNT = 70.4380
SPACECRAFT_CLOCK_STOP_COUNT = 13043.0180
NATIVE_START_TIME = 70.4380
NATIVE_STOP_TIME = 13043.0180
PRODUCER_ID = "HP_SSP_OU"
PRODUCER_FULL_NAME = "AXEL HAGERMANN"
PRODUCER_INSTITUTION_NAME = "OPEN UNIVERSITY, PSSRI"
TARGET_NAME = "TITAN"
4.2.13 REF Data Label
PDS_VERSION_ID = PDS3
/* FILE CHARACTERISTICS DATA ELEMENTS */
RECORD_TYPE = FIXED_LENGTH
RECORD_BYTES = 10282
FILE_RECORDS = 182
/* DATA OBJECT POINTER IDENTIFICATION ELEMENTS */
^TABLE = "SSP_REF_123456_0_R_ATMOS.TAB"
/* INSTRUMENT AND DETECTOR DESCRIPTIVE DATA ELEMENTS */
FILE_NAME = "SSP_REF_123456_0_R_ATMOS.LBL"
DATA_SET_ID = "HP-SSA-SSP-3/4-DESCENT-V1.0"
DATA_SET_NAME = "HUYGENS DESCENT RAW AND CALIBRATED DATA"
PRODUCT_ID = "SSP_REF_123456_0_R_ATMOS.LBL"
PRODUCT_CREATION_TIME = 2005-02-01T00:00:00
MISSION_NAME = "CASSINI-HUYGENS"
INSTRUMENT_HOST_NAME = "HUYGENS PROBE"
INSTRUMENT_HOST_ID = HP
MISSION_PHASE_NAME = "DESCENT"
PRODUCT_TYPE = EDR
START_TIME = 2005-01-14T09:20:21.6980
STOP_TIME = 2005-01-14T12:45:46.7800
SPACECRAFT_CLOCK_START_COUNT = 600.9980
SPACECRAFT_CLOCK_STOP_COUNT = 12926.0800
NATIVE_START_TIME = 600.9980
NATIVE_STOP_TIME = 12926.0800
PRODUCER_ID = "HP_SSP_OU"
PRODUCER_FULL_NAME = "AXEL HAGERMANN"
PRODUCER_INSTITUTION_NAME = "OPEN UNIVERSITY, PSSRI"
TARGET_NAME = "TITAN"
4.2.14 THP - Data Label
PDS_VERSION_ID = PDS3
/* FILE CHARACTERISTICS DATA ELEMENTS */
RECORD_TYPE = FIXED_LENGTH
RECORD_BYTES = 142
FILE_RECORDS = 13260
/* DATA OBJECT POINTER IDENTIFICATION ELEMENTS */
^TABLE = "SSP_THP_123456_0_R_ATMOS.TAB"
/* INSTRUMENT AND DETECTOR DESCRIPTIVE DATA ELEMENTS */
FILE_NAME = "SSP_THP_123456_0_R_ATMOS.LBL"
DATA_SET_ID = "HP-SSA-SSP-3/4-DESCENT-V1.0"
DATA_SET_NAME = "HUYGENS DESCENT RAW AND CALIBRATED DATA"
PRODUCT_ID = "SSP_THP_123456_0_R_ATMOS.LBL"
PRODUCT_CREATION_TIME = 2005-11-18T14:14:00
MISSION_NAME = "CASSINI-HUYGENS"
INSTRUMENT_HOST_NAME = "HUYGENS PROBE"
INSTRUMENT_HOST_ID = HP
MISSION_PHASE_NAME = "DESCENT"
PRODUCT_TYPE = EDR
START_TIME = 2005-01-14T09:11:22.4740
STOP_TIME = 2005-01-14T12:47:16.8150
SPACECRAFT_CLOCK_START_COUNT = 61.7740
SPACECRAFT_CLOCK_STOP_COUNT = 13016.1150
NATIVE_START_TIME = 61.7740
NATIVE_STOP_TIME = 13016.1150
PRODUCER_ID = "HP_SSP_OU"
PRODUCER_FULL_NAME = "AXEL HAGERMANN"
PRODUCER_INSTITUTION_NAME = "OPEN UNIVERSITY, PSSRI"
TARGET_NAME = "TITAN"
4.2.15 TIL Data Label
PDS_VERSION_ID = PDS3
/* FILE CHARACTERISTICS DATA ELEMENTS */
RECORD_TYPE = FIXED_LENGTH
RECORD_BYTES = 122
FILE_RECORDS = 16668
/* DATA OBJECT POINTER IDENTIFICATION ELEMENTS */
^TABLE = "SSP_TIL_123456_0_R_ATMOS.TAB"
/* INSTRUMENT AND DETECTOR DESCRIPTIVE DATA ELEMENTS */
FILE_NAME = "SSP_TIL_123456_0_R_ATMOS.LBL"
DATA_SET_ID = "HP-SSA-SSP-3/4-DESCENT-V1.0"
DATA_SET_NAME = "HUYGENS DESCENT RAW AND CALIBRATED DATA"
PRODUCT_ID = "SSP_TIL_123456_0_R_ATMOS.LBL"
PRODUCT_CREATION_TIME = 2005-11-23T14:00:00
MISSION_NAME = "CASSINI-HUYGENS"
INSTRUMENT_HOST_NAME = "HUYGENS PROBE"
INSTRUMENT_HOST_ID = HP
MISSION_PHASE_NAME = "DESCENT"
PRODUCT_TYPE = EDR
START_TIME = 2005-01-14T09:11:25.4700
STOP_TIME = 2005-01-14T12:47:39.7260
SPACECRAFT_CLOCK_START_COUNT = 64.7700
SPACECRAFT_CLOCK_STOP_COUNT = 13039.0260
NATIVE_START_TIME = 64.7700
NATIVE_STOP_TIME = 13039.0260
PRODUCER_ID = "HP_SSP_OU"
PRODUCER_FULL_NAME = "AXEL HAGERMANN"
PRODUCER_INSTITUTION_NAME = "OPEN UNIVERSITY, PSSRI"
TARGET_NAME = "TITAN"
The following table gives the definition of the data_quality_flag: (TBC)
DATA QUALITY FLAG RAW DATA CALIBRATED DATA
1 Good N/A
2 Poor N/A
4.3 Data Product design
All data products will be stored in tables that comprise both voltages and A/D
counts in separate columns within the same table. Each row of data contains a
time stamp (in seconds after T0), other relevant information like instrument
mode and dataset ID (as outlined in [AD-3]) and the measurements. As the data
products are very similar in structure we refrain from a complete list for all
sensors and modes and only give a few examples. All data will be ordered as
contained in the data packets and set out in [AD-3], except for the conversion
into voltages which will be added in extra columns. Deviations will be
identified in the labels. The following list of product designs is not
extensive. A complete list of all object definition is unnecessary as all
products are similar. In the following, we detail the Data products of ACCE,
ACCI and REF
4.3.1 Data Product Design Example - ACCE Sensor
4.3.1.1 Data Object Definition ACCE_MODE057_TABLE
The ACCE data packets consist of one time-tagged time series of 512 values
that represent the ACCE impact event. The data is represented as time (s),
ACCE measurements (raw ADC counts), ACCE (V).
The third column ACCE(V) is directly reduced from the digital numbers
(raw ADC counts) by:
Voltage = DN / 256.0 * (VOLTAGE_MAX - VOLTAGE-MIN), with VOLTAGE_MAX =+5V
and
VOLTAGE_MIN=0 V .
/* DATA OBJECT DEFINITION */
/* DATA OBJECT DEFINITIION FOR THE ACCE_MODE057_Table */
OBJECT = TABLE
NAME = ACCE_MODE057_Table
INTERCHANGE_FORMAT = ASCII
ROWS = 512
COLUMNS = 6
ROW_BYTES = 72
DESCRIPTION = "ACC-E table"
OBJECT = COLUMN
COLUMN_NUMBER = 1
NAME = ACCE_SAMPLE_TIME
DATA_TYPE = ASCII_REAL
START_BYTE = 1
BYTES = 20
DESCRIPTION = "Nominal sample time"
UNIT = SECONDS
END_OBJECT = COLUMN
OBJECT = COLUMN
COLUMN_NUMBER = 2
NAME = ACCE_MODE
DATA_TYPE = ASCII_INTEGER
START_BYTE = 21
BYTES = 10
DESCRIPTION = "SSP Mode"
END_OBJECT = COLUMN
OBJECT = COLUMN
COLUMN_NUMBER = 3
NAME = ACCE_ID
DATA_TYPE = ASCII_INTEGER
START_BYTE = 31
BYTES = 10
DESCRIPTION = "ACC-E ID"
END_OBJECT = COLUMN
OBJECT = COLUMN
COLUMN_NUMBER = 4
NAME = ACCE_SEQUENCE
DATA_TYPE = ASCII_INTEGER
START_BYTE = 41
BYTES = 10
DESCRIPTION = "Sequence no of current sample"
END_OBJECT = COLUMN
OBJECT = COLUMN
COLUMN_NUMBER = 5
NAME = ACCE_VAL
DATA_TYPE = ASCII_INTEGER
START_BYTE = 51
BYTES = 10
DESCRIPTION = "8 bit value"
END_OBJECT = COLUMN
OBJECT = COLUMN
COLUMN_NUMBER = 6
NAME = ACCE_VOLT
DATA_TYPE = ASCII_REAL
START_BYTE = 61
BYTES = 10
DESCRIPTION = "Acc-E voltage"
UNIT = VOLTS
END_OBJECT = COLUMN
END_OBJECT = TABLE
END
4.3.1.2 Data Object Definition ACCE_MODE123_TABLE
The ACCE_MODE123_DN_SERIES is used for the data acquired during instrument
modes 1, 2 and 3. There are 3 time series in total that will be archived in
one file. The length of each time series is 110 values.
/* DATA OBJECT DEFINITION */
/* DATA OBJECT DEFINITIION FOR THE ACCE_MODE123_ID2_Table */
OBJECT = TABLE
NAME = ACCE_MODE123_ID2
INTERCHANGE_FORMAT = ASCII
ROWS = 3
COLUMNS = 212
ROW_BYTES = 2132
DESCRIPTION = "ACC-I compressed impact signature"
OBJECT = COLUMN
COLUMN_NUMBER = 1
NAME = ACCE_SAMPLE_TIME
DATA_TYPE = ASCII_REAL
START_BYTE = 1
BYTES = 20
UNIT = SECONDS
DESCRIPTION = "Nominal sample time"
END_OBJECT = COLUMN
OBJECT = COLUMN
COLUMN_NUMBER = 2
NAME = ACCE_MODE
DATA_TYPE = ASCII_INTEGER
START_BYTE = 21
BYTES = 10
DESCRIPTION = "SSP Mode"
END_OBJECT = COLUMN
OBJECT = COLUMN
COLUMN_NUMBER = 3
NAME = ACCE_ID
DATA_TYPE = ASCII_INTEGER
START_BYTE = 31
BYTES = 10
DESCRIPTION = "ACCE datastream packet ID"
END_OBJECT = COLUMN
OBJECT = COLUMN
COLUMN_NUMBER = 4
NAME = ACCE_MAX_SIG
DATA_TYPE = ASCII_INTEGER
START_BYTE = 41
BYTES = 10
DESCRIPTION = "8 bit maximum value"
END_OBJECT = COLUMN
OBJECT = COLUMN
COLUMN_NUMBER = 5
NAME = ACCE_MAX_POS
DATA_TYPE = ASCII_INTEGER
START_BYTE = 51
BYTES = 10
DESCRIPTION = "offset of peak from start of signature"
END_OBJECT = COLUMN
OBJECT = COLUMN
COLUMN_NUMBER = 6
NAME = ACCE_PRE_MAX_POS
DATA_TYPE = ASCII_INTEGER
START_BYTE = 61
BYTES = 10
DESCRIPTION = "offset of leading 1/2 max point from start"
END_OBJECT = COLUMN
...ETC...
4.3.1.3 Data Object Definition ACCE Calibrated Data
N/A
4.3.2 Data Object Definition Example - ACCI sensor
The ACCI data packets consist of one time-tagged time series of 512 values that
represent the ACCI impact event. The data is represented as time (s) and ACCI
measurements as raw ADC counts and voltages.
4.3.2.1 Data object definition ACCI_MODE057_TABLE
/* DATA OBJECT DEFINITION */
/* DATA OBJECT DEFINITIION FOR THE ACCI_MODE057_Table */
OBJECT = TABLE
NAME = ACCI_MODE057_Table
INTERCHANGE_FORMAT = ASCII
ROWS = 512
COLUMNS = 6
ROW_BYTES = 72
DESCRIPTION = "ACC-I table"
OBJECT = COLUMN
COLUMN_NUMBER = 1
NAME = ACCI_SAMPLE_TIME
DATA_TYPE = ASCII_REAL
START_BYTE = 1
BYTES = 20
DESCRIPTION = "Nominal sample time"
END_OBJECT = COLUMN
OBJECT = COLUMN
COLUMN_NUMBER = 2
NAME = ACCI_MODE
DATA_TYPE = ASCII_INTEGER
START_BYTE = 21
BYTES = 10
DESCRIPTION = "SSP Mode"
END_OBJECT = COLUMN
OBJECT = COLUMN
COLUMN_NUMBER = 3
NAME = ACCI_ID
DATA_TYPE = ASCII_INTEGER
START_BYTE = 31
BYTES = 10
DESCRIPTION = "ACC-I ID"
END_OBJECT = COLUMN
OBJECT = COLUMN
COLUMN_NUMBER = 4
NAME = ACCI_SEQUENCE
DATA_TYPE = ASCII_INTEGER
START_BYTE = 41
BYTES = 10
DESCRIPTION = "Sequence no of current sample"
END_OBJECT = COLUMN
OBJECT = COLUMN
COLUMN_NUMBER = 5
NAME = ACCI_VAL
DATA_TYPE = ASCII_INTEGER
START_BYTE = 51
BYTES = 10
DESCRIPTION = "12 bit value"
END_OBJECT = COLUMN
OBJECT = COLUMN
COLUMN_NUMBER = 6
NAME = ACCI_VOLT
DATA_TYPE = ASCII_REAL
START_BYTE = 61
BYTES = 10
DESCRIPTION = "Acci voltage"
END_OBJECT = COLUMN
END_OBJECT = TABLE
END
4.3.2.2 Data Object Definition of ACCI_MODE1236_TABLE
The ACCI sensor is sampled continuously at 500Hz through the mission.
One set of values in these data packets consist of Mean, Variance, and
Maximum values taken over 200 ACCI samples . The data is represented by 7
columns as: TIME (s), ACCI_MEAN (raw ADC counts), ACCI_MEAN (V), ACCI_VAR
(raw ADC counts), ACCI_VAR (V), ACCI_MAX (raw ADC counts), ACCI_MAX (V).
The voltages ACCI (V) values are reduced from the digital numbers
(raw ADC counts) by:
Voltage = DN / 4096 * (VOLTAGE_MAX - VOLTAGE-MIN), with
VOLTAGE_MAX = +5V and
VOLTAGE_MIN= -5 V.
4.3.2.3 Data Object Definition of ACCI Calibrated Data
N/A
4.3.3 Data Product Design - APIS Sensor
4.3.3.1 Data Object definition of APIS-MODE23_TABLE
The APIS sensor operates from mode2 to the end of mission. The acoustic
return signal is formed by 1000 samples measured at 1 millisecond interval.
In modes 2 and 3, the data is reduced by selecting a window from the1000
sample acoustic return signal 40th sample to 560th sample and sending an
average of 20 samples as 1 value (called bin). Therefore one return signal
is represented by 26 such bins.
The data is represented by 4 columns as: time (s), bin number, APIS
(raw ADC counts), APIS (V).
The third column ACCI(V) is directly reduced from the digital numbers
(raw ADC counts) by:
4.3.3.2 Data Product Design of APIS-MODE4_TABLE
The APIS sensor operates from mode2 to the end of mission. The acoustic
return signal is formed by 1000 samples measured at 1 millisecond interval.
In mode 4, the data is reduced by transmitting the 60 samples around the peak
as uncompressed, and further 140 samples are averaged by 4 with remaining
samples averaged by 20. Therefore one return signal is represented by 136
such bins.
The data is represented by 5 columns as: time (s), bin number, APIS
(raw ADC counts), APIS (V), APIS_PEAK_POS.
4.3.3.3 Data Object definition of APIS-MODE6_TABLE
The APIS sensor operates from mode2 to the end of mission. The acoustic
return signal is formed by 1000 samples measured at 1 millisecond interval,
in surface mode (6), the sensor output is taken from 10 pulses separated by
1 second listening interval. In mode 6, the data is reduced by transmitting
10x50 bins (where each bin contains average value of 20 samples) = 500 bins
and also the highest return signal is transmitted as mode4 (i.e. compression
centred on the peak).
The data is represented by 5 columns as: time (s), bin number, APIS
(raw ADC counts), APIS (V), APIS_PEAK_POS.
4.3.3.4 Data Object definition of APIS Calibrated Data
N/A
4.3.4 Data Product design, DEN, HK, PER, THP, TIL
Data products of DEN, PER, REF and THP do not differ greatly from those
presented the previous sections. Data objects will be separated into modes
as implemented in the flight software of the individual sensors (cf. [AD-4]).
All data will be of the type OBJECT=TABLE, INTERCHANGE_FORMAT=ASCII.
4.3.5 Data Product Design - REF Sensor
Ref sensor information contains the complete photodiode array read-out in
A/D counts and voltages at every timestep. This results in a 1027 column table.
4.3.5.1 Data Object definition of APIS-MODE23_TABLE
/* DATA OBJECT DEFINITION */
/* DATA OBJECT DEFINITIION FOR THE REF_MODE123456_Table */
OBJECT = TABLE
NAME = REF_MODE123456_Table
INTERCHANGE_FORMAT = ASCII
ROWS = 182
COLUMNS = 1027
ROW_BYTES = 10282
DESCRIPTION = "REF table"
OBJECT = COLUMN
COLUMN_NUMBER = 1
NAME = REF_SAMPLE_TIME
DATA_TYPE = ASCII_REAL
START_BYTE = 1
BYTES = 20
DESCRIPTION = "Nominal sample time "
END_OBJECT = COLUMN
OBJECT = COLUMN
COLUMN_NUMBER = 2
NAME = SSP_MODE
DATA_TYPE = ASCII_INTEGER
START_BYTE = 21
BYTES = 10
DESCRIPTION = "SSP Mode"
END_OBJECT = COLUMN
OBJECT = COLUMN
COLUMN_NUMBER = 3
NAME = REF_ILLUMINATION
DATA_TYPE = ASCII_INTEGER
START_BYTE = 31
BYTES = 10
DESCRIPTION = "REF illumination mode"
END_OBJECT = COLUMN
OBJECT = COLUMN
COLUMN_NUMBER = 4
NAME = REF_SAMPLE
DATA_TYPE = ASCII_INTEGER
START_BYTE = 41
BYTES = 10
DESCRIPTION = "REF value"
END_OBJECT = COLUMN
[�]
5 Appendix: Available Software to read PDS files
N/A
6 Appendix: Auxiliary Data Usage
TBD
7 Appendix: Example of Directory Listing of Data Set
Please refer to section 3.4.