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Comprehensive evaluation of attitude and orbit estimation using real earth magnetic field dataA single, augmented extended Kalman filter (EKF) which simultaneously and autonomously estimates spacecraft attitude and orbit was developed and tested with simulated and real magnetometer and rate data. Since the earth's magnetic field is a function of time and position, and since time is accurately known, the differences between the computed and measured magnetic field components, as measured by the magnetometers throughout the entire spacecraft's orbit, are a function of orbit and attitude errors. These differences can be used to estimate the orbit and attitude. The test results of the EKF with magnetometer and gyro data from three NASA satellites are presented and evaluated.
Document ID
19980137210
Document Type
Conference Paper
Authors
Deutschmann, Julie (NASA Goddard Space Flight Center Greenbelt, MD United States)
Bar-Itzhack, Itzhack (Technion - Israel Inst. of Tech. Haifa, Israel)
Date Acquired
August 18, 2013
Publication Date
August 1, 1997
Subject Category
Astrodynamics
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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