In-flight wobble identification for GalileoTo achieve in-flight wobble compensation for Galileo, wobble identification is implemented using star scanner data or automatic gain control (AGC) signal as measurement in all-spin mode. The star scanner provides spacecraft attitude in inertial space while the AGC signal provides the spacecraft pointing relative to earth. A linear observation model is defined for each sensor which is being applied to a Kalman Estimator. It can be shown from simulation that better result can be achieved using a combined set of data than any one sensor alone due to correlation reduction among error sources.
Document ID
19860029701
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Lai, J. Y. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Wong, E. C. (California Institute of Technology Jet Propulsion Laboratory, Pasadena, United States)