PDS_VERSION_ID                   = PDS3
RELEASE_ID                       = 0001
REVISION_ID                      = 0000
RECORD_TYPE                      = STREAM

SPACECRAFT_NAME                  = SMART1
INSTRUMENT_ID                    = SPEDE
TARGET_NAME                      = PLASMA

OBJECT                           = TEXT
  PUBLICATION_DATE               = 2005-10-18
  NOTE                           = "SPEDE BACKGROUND PLASMA CALIBRATED DATA
                                    ARCHIVE v1.0"
END_OBJECT                       = TEXT
END

SPEDE BACKGROUND PLASMA CALIBRATED DATA ARCHIVE
==============================================

DISCLAIMER
----------

DUE TO THE EARLY STATUS OF CALIBRATION AT THE TIME OF THE FIRST
RELEASE, THE DATA SHALL BE USED IN CLOSE CONSULTATION WITH THE SPEDE
PI ONLY. NO PUBLICATION OR PUBLIC PRESENTATION SHALL BE MADE WITHOUT 
THE EXPLICIT WRITTEN APPROVAL OF THE SPEDE PI.

Introduction
____________

This PDS data archive contains Level 2 calibrated  data measured by SPEDE 
(Spacecraft Potential, Electron and Dust Experiment) instrument onboard
SMART-1 spacecraft during spacecraft orbits 205-227. The main task during
these orbits was to monitor natural background plasma while Electric
Propulsion was off.

NOTE! You need also product S1_EP_THRUST_LOG.TAB from the dataset
S1-L-ESOC-6-AUXILIARY-DATA-V1.0 to correctly interpret SPEDE data.
More information in SPEDESIS document.

In addition to science data, this archive contains instrument housekeeping
data, and documentation describing the instrument and the data products.

SPEDE data in this archive has been provided by Finnish Meteorological
Institute, P.O.Box 503, 00101 Helsinki, Finland. The instrument's PI is Anssi
Malkki (Anssi.Malkki@fmi.fi).

Disk format
___________

To be added by SMART-1 PDS team.

File formats
____________

Data product files in this data archive are of ASCII format. Data products are
TABLEs. 
Documentation files are either ASCII of PDF files.

SPEDE data products use attached labels. The labels point to external format
containers (*.FMT files), saved in LABEL subdirectory of this archive.

Data structure is described in SPEDE SIS document, SPEDESIS.ASC, that can be
found in DOCUMENT subdirectory.

Archive contents
________________

   File                                Description

TOP-LEVEL DIRECTORY
|
|- AAREADME.TXT                        This file
|
|- VOLDESC.CAT                         Description of the data volume
|
|- [CALIB]                             The calibration directory.
|     |
|     |- CALINFO.TXT                   Info about CALIB directory contents.
|     |
|     |- SPEDE_BIAS_CALIB.TAB          Calibration table for biases and
|     |                                background values.
|     |- SPEDE_CURRENT_CALIB.TAB       Calibration polynomial coefficients
|                                      for Langmuir measurement calibration.
|
|- [CATALOG]                           A directory containing information
|      |                               about SPEDE LEOP calibration data set.
|      |
|      |- CATINFO.TXT                  Info about CATALOG directory contents.
|      |
|      |- MISSION.CAT                  SMART-1 mission description, provided
|      |                               by SMART-1 project.
|      |
|      |- INSTHOST.CAT                 SMART-1 spacecraft description,
|      |                               provided by SMART-1 project.
|      |
|      |- INST.CAT                     SPEDE instrument description.
|      |
|      |- DATASET.CAT                  Data set description.
|      |
|      |- SOFT.CAT                     Software description.
|      |
|      |- REFERENCES.CAT               References catalog.
|      |
|
|- [DATA]                              A directory for instrument data
|     |                                products.
|     |
|     |- [200402]                      February 2004 data products.
|     |     |
|     |   data products
|
|
|- [DOCUMENT]                          A directory containing documentation.
|      |
|      |- DOCINFO.TXT                  Info about DOCUMENT directory contents.
|      |
|      |- SPEDESIS.ASC                 SPEDE PDS interface description in
|      |                               ASCII format.
|      |
|      |- SPEDESIS.PDF                 SPEDE PDS interface description in
|      |                               PDF format (including pictures).
|      |
|      |- SPEDESIS.LBL                 PDS detached label for SPEDESIS doc.
|      |
|      |- SPEDEPAPER.ASC               SPEDE paper in ASCII format.
|      |
|      |- SPEDEPAPER.PDF               SPEDE paper in PDF format.
|      |
|      |- SPEDEPAPER.LBL               PDS detached label for SPEDE paper.
|      |
|      |- SPEDESISXXX.JPG              SPEDESIS document images in JPG format.
|
|
|- [INDEX]                             A directory for INDEX files.
|    |
|    |- INDEX.LBL                      A PDS detached label describing
|    |                                 INDEX.TAB
|    |- INDEX.TAB                      Tabular summary of data files.
|    |
|    |- INDXINFO.TXT                   Info about INDEX directory contents.
|
|
|- [LABEL]                             Directory for formatting containers
|     |                                used by attached labels.
|     |
|     |- LABINFO.TXT                   Info about LABEL directory contents.
|     | 
|     |- SPEDE_FLUX.FMT                Format file for electron/ion flux
|     |                                data product label.
|     |- SPEDE_PLASMA_NN.FMT           Format file for plasma data product
|     |                                label. NN=20,40
|     |- SPEDE_HK.FMT                  Format file for housekeeping data
                                       product label.