NDLI: Attitude ground support system for the solar maximum mission spacecraft

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Attitude ground support system for the solar maximum mission spacecraft

Content Provider	NASA Technical Reports Server (NTRS)
Author	Nair, G.
Copyright Year	1980
Description	The SMM attitude ground support system (AGSS) supports the acquisition of spacecraft roll attitude reference, performs the in-flight calibration of the attitude sensor complement, supports onboard control autonomy via onboard computer data base updates, and monitors onboard computer (OBC) performance. Initial roll attitude acquisition is accomplished by obtaining a coarse 3 axis attitude estimate from magnetometer and Sun sensor data and subsequently refining it by processing data from the fixed head star trackers. In-flight calibration of the attitude sensor complement is achieved by processing data from a series of slew maneuvers designed to maximize the observability and accuracy of the appropriate alignments and biases. To ensure autonomy of spacecraft operation, the AGSS selects guide stars and computes sensor occultation information for uplink to the OBC. The onboard attitude control performance is monitored on the ground through periodic attitude determination and processing of OBC data in downlink telemetry. In general, the control performance has met mission requirements. However, software and hardware problems have resulted in sporadic attitude reference losses.
File Size	660513
Page Count	18
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19810002575
Archival Resource Key	ark:/13960/t5p893919
Language	English
Publisher Date	1980-10-01
Access Restriction	Open
Subject Keyword	Astrodynamics Satellite Instruments Calibrating Satellite Attitude Control Transfer Functions Multimission Modular Spacecraft Airborne/spaceborne Computers Onboard Data Processing Solar Maximum Mission Telemetry Ground Support Systems Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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