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LANDSAT-D flight segment operations manual. Appendix B: OBC software operationsThe LANDSAT 4 satellite contains two NASA standard spacecraft computers and 65,536 words of memory. Onboard computer software is divided into flight executive and applications processors. Both applications processors and the flight executive use one or more of 67 system tables to obtain variables, constants, and software flags. Output from the software for monitoring operation is via 49 OBC telemetry reports subcommutated in the spacecraft telemetry. Information is provided about the flight software as it is used to control the various spacecraft operations and interpret operational OBC telemetry. Processor function descriptions, processor operation, software constraints, processor system tables, processor telemetry, and processor flow charts are presented.
Document ID
19830019019
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Talipsky, R.
(General Electric Co. Philadelphia, PA, United States)
Date Acquired
September 4, 2013
Publication Date
December 31, 1981
Subject Category
Earth Resources And Remote Sensing
Report/Patent Number
NASA-CR-170522
SVS-10266-APP-B
E83-10288
NAS 1.26:170522
Accession Number
83N27290
Funding Number(s)
CONTRACT_GRANT: NAS5-25300
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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