A Trajectory Preprocessor for Antenna Pointing

Details A Trajectory Preprocessor for Antenna Pointing A Trajectory Preprocessor for Antenna Pointing

Apr 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994tdapr.118..139t&link_type=abstract

The Telecommunications and Data Acquisition Progress Report, TDA PR 42-118, April-June 1994, pp. 139-159

Computer Science

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Scientific paper

A trajectory-preprocessing algorithm has been devised which matches antenna angular position, velocity, and acceleration to those of a target. This eliminates vibrations of the antenna structure caused by discontinuities in velocity and acceleration commands, and improves antenna-pointing performance by constraining antenna motion to a linear regime. The algorithm permits faster acquisition times and preserves antenna-tracking capability in situations where there would otherwise be an unacceptably sudden change in antenna velocity or acceleration. A simulation of DSS 13 shows that this preprocessor would reduce servo error to 1 mdeg during acquisition of a low-Earth-orbiting satellite.

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