PDS_VERSION_ID      = PDS3                                                    
RECORD_TYPE         = STREAM                   
OBJECT              = TEXT                                                    
  PUBLICATION_DATE    =  2024-04-25
  NOTE                = "Description of contents of CALIB directory"       
END_OBJECT          = TEXT                                                    
END                                                                           
                                                                              
                                                                              
                                                                              
The CALIB directory contains the calibration files used in the processing
of the raw data or needed to use the data products of the volume.
It should be noted that some calibration files listed in the CALIB tree
diagram below may not be present in this data set.

IFMS data:
The used calibration routines are described in two documents:
ROS-RSI-IGM-DS-3118.PDF and ROS-RSI-IGM-DS.3119.PDF, for the Doppler and 
Ranging processing software, respectively. The documents can be found in the
folder /DOCUMENT/RSI_DOC/.

The .RAW files contain the header information and the data in Level 1a. This
is separated for Level 1b files, where the header is in the .CFG file and the
data is in the .TAB file. There is only one label file for the .CFG and .TAB
files in level 1b. More detailed information can be found there as well.
                                                                              
     Each object is in ASCII; the files have a fixed length of
characters per line, but this fixed length can differ from file to file. 
The details and correct values can be found in the label header of each file. 
Eachline is delimited with a carriage-return (ASCII 13) line-feed 
(ASCII 10) pair.

                                                                              
     Structure of the CALIB directory:

CALIB
  |
  |- CLOSED_LOOP
  |     |
  |     |- DSN           Closed-loop calibration data of the DSN ground stations.
  |     |   |
  |     |   |- MET       Meteorological data files
  |     | 
  |     |- IFMS          
  |         |
  |         |- RCL       Closed-loop Range Calibration data files.
  |         |            (will be only generated when Ranging files are
  |         |             available)
  |         | 
  |         |- DCL       Closed-loop Doppler Calibration data files.
  |         | 
  |         |- MET       Closed-loop Meteorological data files.
  | 
  |- OPEN_LOOP
  |     | 
  |     |- DSN           Open-loop calibration data of the DSN ground stations.
  |     |   |
  |     |   |- GNC       Gain Correction files
  |     |   |- ION       Ionospheric calibration file
  |     |   |- MET       Meteorological data files
  |     |   |- TRO       Tropospheric calibration files
  |     |   |- SRF       Surface Reflection Filer Files
  |     | 
  |     |- IFMS
  |         | 
  |         |- RCL       Open-loop Range Calibration data files.
  |         | 
  |         |- DCL       Open-loop Doppler Calibration data files.
  |         | 
  |         |- MET       Open-loop Meteorological data files.
  |
  |- UPLINK_FREQ_CORRECT  This folder will only be generated if the
  |                       uplink frequency in one of the .RAW
  |                       files was identified as wrong.
  |                       It tells the user which files were 
  |                       affected and where to find the corrected
  |                       Level 2 data files.