Attitude determination for high-accuracy submicroradian jitter pointing on space-based platforms

Details Attitude determination for high-accuracy submicroradian jitter pointing on space-based platforms Attitude determination for high-accuracy submicroradian jitter pointing on space-based platforms

Oct 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990spie.1303..336g&link_type=abstract

IN: Advances in optical structure systems; Proceedings of the Meeting, Orlando, FL, Apr. 16-19, 1990 (A91-36651 15-74). Bellingh

Computer Science

Pointing Control Systems, Satellite Attitude Control, Space Platforms, Vibration Damping, Image Motion Compensation, Image Processing, Mirrors, Tracking (Position)

Scientific paper

A description of the requirement definition process is given for a new wideband attitude determination subsystem (ADS) for image motion compensation (IMC) systems. The subsystem consists of either lateral accelerometers functioning in differential pairs or gas-bearing gyros for high-frequency sensors using CCD-based star trackers for low-frequency sensors. To minimize error the sensor signals are combined so that the mixing filter does not allow phase distortion. The two ADS models are introduced in an IMC simulation to predict measurement error, correction capability, and residual image jitter for a variety of system parameters. The IMC three-axis testbed is utilized to simulate an incoming beam in inertial space. Results demonstrate that both mechanical and electronic IMC meet the requirements of image stabilization for space-based observation at submicroradian-jitter levels. Currently available technology may be employed to implement IMC systems.

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