Subject: GMS-5  level-aldebo and level-temperture tables
From: KLM@mda.ca        (Kjell Magnussen)
Date: Wed, 24 May 95 15:18:07 PDT


The level-aldebo and level-temperture tables for GMS-5 are given in the JMA
document "Revision of GMS Stretched-VISSR Data Format", dated Oct 1993.

These tables are nominal. The "correct" table for a transmission will be
included in the transmission starting with GMS-5. JMA has taken some of the
spare words in the DOC (documentation) block of the S-VISSR format and added
a "calibration information block". This calibration information block will
include the count, or level, to albedo tables for the VIS channel, and the
count to temperature tables for the IR channels. The tables for IR are, in
principle, updated every observation. The tables for VIS are fixed, and are
not updated.

The calibration information block is 256 words per scan, and is subcommutated
like the simplified mapping, orbit & attitude data, and MANAM blocks, for a
total size of 6,400 words. The calibration information block is located right
after the MANAM block. The detailed layout of this block is given in the 
document mentioned above. A short summary of the layout of this block is :

Detector  Words      Type       Description
=============================================
VIS1    257- 512   64xR*4.6   Albedo of counts 0 to 63
VIS2    513- 768   64xR*4.6   Albedo of counts 0 to 63
VIS3    769-1024   64xR*4.6   Albedo of counts 0 to 63
VIS4   1025-1280   64xR*4.6   Albedo of counts 0 to 63
IR1    1281-2304  256xR*4.3   Temperature (K) of counts 0 to 255
IR2    2305-3328  256xR*4.3   Temperature (K) of counts 0 to 255
IR3    3329-4352  256xR*4.3   Temperature (K) of counts 0 to 255

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Kjell Magnussen                                      
Principal Engineer         Phone: (604) 278-3411 
MacDonald Dettwiler          (Direct Line: 231-2515)
13800 Commerce Parkway     Fax: (604) 278-2936
Richmond, BC               E-mail: klm@mda.ca
Canada  V6V2J3

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