PDS_VERSION_ID      = PDS3
LABEL_REVISION_NOTE = "2013-09-17 S. Slavney DSMAP.CAT update;
                       2020-07-01 E. Guinness Added invalid constant note."
RECORD_TYPE         = STREAM
OBJECT              = TEXT
  PUBLICATION_DATE  = 2020-07-01
  NOTE              = "All PDS Deliveries."
END_OBJECT          = TEXT
END

                              Chandrayaan-1 Mini-RF
                    Mini-SAR Instrument Science Data Archive

                                  ERRATA.TXT
                      Initial version: 25 November 2009
                              Mini-RF POC Team
                          Johns Hopkins University
                         Applied Physics Laboratory

Note on polarization
--------------------

Mini-RF instruments, Forerunner on Chandrayaan-1 and Mini-RF on LRO transmit
nominally left-hand circularly polarized (LCP) signals and receive linear
horizontally and vertically-polarized signals.  Post-launch calibration
revealed that both instruments have somewhat greater ellipticity in the
transmitted signal than anticipated.  Consequently, a formalism has been
developed [1] to correct for this deviation from perfect circularity of
the transmitted signal.  The correction is derived from Stokes parameters
and relevant daughter products.  Briefly, the degree of polarization and 
the known axial ratio of the transmitted signal furnishes a degradation 
of the cross-polarization ratio (CPR).

[1] Reference: Keith Raney's paper on this matter in the archive

Note on Archive Volume SIS, in the Document directory
-----------------------------------------------------
Figure 1 showing the directory tree has errors. It omits some image files and
subdirectories in the Document directory. It shows the files spiceds.cat and
spice_inst.cat in the Catalog directory, but these files do not exist. The 
contents of the Calib directory are shown incorrectly. The contents of the 
Extras/Quikview subdirectories are shown as having PDS labels, but none are 
present or required for these subdirectories. The md5 checksum file and its 
label in the index directory are not shown in the figure or mentioned in 
the document. This checksum file is provided to ensure that files 
transferred from this archive are intact.

Correction to PDS Labels
------------------------
September 11, 2012. The following 20 data product labels were found to have 
incorrect values for the keywords DATA_SET_ID, DATA_SET_NAME, MISSION_NAME,
INSTRUMENT_HOST_NAME, INSTRUMENT_HOST_ID, INSTRUMENT_NAME, and INSTRUMENT_ID.
Corrected labels were supplied by the Mini-RF team. The index table entries
for these products were also corrected.

DATA\SAR\01600_01699\LEVEL2\FSB_01628_2CD_EIU_07N120_V1.LBL	
DATA\SAR\01600_01699\LEVEL2\FSB_01694_2CD_EIU_09S048_V1.LBL	
DATA\SAR\01600_01699\LEVEL2\FSB_01694_2CD_EIU_09S048_V2.LBL	
DATA\SAR\01700_01799\LEVEL2\FSB_01724_2CD_EIU_10S016_V1.LBL	
DATA\SAR\01700_01799\LEVEL2\FSB_01730_2CD_EIU_21N010_V1.LBL	
DATA\SAR\01700_01799\LEVEL2\FSB_01735_2CD_EIU_25N005_V1.LBL	
DATA\SAR\01700_01799\LEVEL2\FSB_01741_2CD_EIU_12N358_V1.LBL	
DATA\SAR\01700_01799\LEVEL2\FSB_01769_2CD_EIU_03S327_V1.LBL	
DATA\SAR\01700_01799\LEVEL2\FSB_01784_2CD_EIU_25N311_V1.LBL	
DATA\SAR\01700_01799\LEVEL2\FSB_01799_2CD_EIU_26S295_V1.LBL	
DATA\SAR\01800_01899\LEVEL2\FSB_01810_2CD_EIU_06N284_V1.LBL	
DATA\SAR\01800_01899\LEVEL2\FSB_01823_2CD_EIU_19S270_V1.LBL	
DATA\SAR\01800_01899\LEVEL2\FSB_01826_2CD_EIU_17S266_V1.LBL	
DATA\SAR\01800_01899\LEVEL2\FSB_01829_2CD_EIU_30S263_V1.LBL	
DATA\SAR\01800_01899\LEVEL2\FSB_01891_2CD_EIU_23N196_V1.LBL	
DATA\SAR\01800_01899\LEVEL2\FSB_01892_2CD_EIU_68S188_V1.LBL	
DATA\SAR\03300_03399\LEVEL2\FSB_03349_2CD_EHU_29N336_V1.LBL	
DATA\SAR\03300_03399\LEVEL2\FSB_03349_2CD_EHU_36S148_V1.LBL	
DATA\SAR\03300_03399\LEVEL2\FSB_03350_2CD_EHU_29N334_V1.LBL	
DATA\SAR\03300_03399\LEVEL2\FSB_03350_2CD_EHU_34S147_V1.LBL	

DSMAP.CAT Update
-----------------------------------------------------------
September 17, 2013.  The file DSMAP.CAT in the CATALOG directory has 
been revised to correct errors in the equations for translating between 
pixel coordinates and latitude-longitude coordinates for the 
equirectangular and polar stereographic map projections.

Note on Invalid Constant
------------------------
The map projected level-2 and mosaic products have areas in the images where
there are no data. For the mosaics and some level-2 products, a value of
-3.402822655e+38 occurs where there are no data. For most level-2 products, a
value of 0.0 is present for areas of no data.