Digital spacecraft antenna tracking system

Details Digital spacecraft antenna tracking system Digital spacecraft antenna tracking system

1998-07-10

1999-07-20

Blum, Theodore M.

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a satellite

342359, 342372, H04B 7185

Patent

active

059261307

ABSTRACT:
A digital spacecraft antenna tracking system and method are provided which utilize an array of antenna feed elements oriented relative to a shaped spacecraft reflector antenna system each of which generates an output signal corresponding to a received incident signal. The outputs can be processed by a mixer/multiplexer (M/MUX) before processing by a digital tracking control receiver. The direction of a beacon signal incident on the spacecraft reflector antenna system is obtained by the TCR by comparing the beacon response of the M/MUX to a set of premeasured responses to incident signals having a known direction or orientation relative to a reference tracking grid. The premeasured responses are stored in a memory as a set of reference responses. Once the direction of the signal is obtained, the TCR assigns control voltages which are used by the spacecraft to steer the spacecraft antenna to a desired pointing direction relative to the beacon signal.

REFERENCES:
patent: 4963890 (1990-10-01), Perrotta et al.
patent: 5274382 (1993-12-01), Wills et al.
patent: 5521604 (1996-05-01), Yamashita et al.
patent: 5754139 (1998-05-01), Turcotte et al.

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