NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Application of square-root filtering for spacecraft attitude controlSuitable digital algorithms are developed and tested for providing on-board precision attitude estimation and pointing control for potential use in the Landsat-D spacecraft. These algorithms provide pointing accuracy of better than 0.01 deg. To obtain necessary precision with efficient software, a six state-variable square-root Kalman filter combines two star tracker measurements to update attitude estimates obtained from processing three gyro outputs. The validity of the estimation and control algorithms are established, and the sensitivity of their performance to various error sources and software parameters are investigated by detailed digital simulation. Spacecraft computer memory, cycle time, and accuracy requirements are estimated.
Document ID
19780066256
Document Type
Conference Proceedings
Authors
Sorensen, J. A. (Analytical Mechanics Associates, Inc. Mountain View, CA, United States)
Schmidt, S. F. (Analytical Mechanics Associates, Inc. Mountain View, CA, United States)
Goka, T. (Analytical Mechanics Associates, Inc. Mountain View, Calif., United States)
Date Acquired
August 9, 2013
Publication Date
January 1, 1978
Subject Category
SPACECRAFT DESIGN, TESTING AND PERFORMANCE
Report/Patent Number
AIAA PAPER 78-1245
Meeting Information
Guidance and Control Conference(Palo Alto, CA)
Funding Number(s)
CONTRACT_GRANT: NAS5-23535
Distribution Limits
Public
Copyright
Other