Tracking antenna system

Details Tracking antenna system Tracking antenna system

1996-03-27

1999-05-04

Blum, Theodore M.

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

Directive

Including antenna orientation

H01Q 300

Patent

active

059008369

ABSTRACT:
A control portion performs gyro control at control intervals of .DELTA.t, by using -.omega.G, which is obtained by inverting the polarity of an angular rate .omega.G outputted from an angular rate sensor portion. On the other hand, a receiving level is detected at constant control intervals of .DELTA.T (=M.DELTA.t: M is an integer). The rotation of an antenna portion is controlled by using .omega.s, if the receiving level has increased, or by using -.omega.s, if the receiving level has decreased, i.e. by step track control. By accumulating the control amount .+-..omega.s for a predetermined long time period of N.DELTA.T, accumulation of an error contained in each angular rate .omega.G is obtained. The accumulated value is then divided by N to calculate an error .DELTA..omega.G contained in .omega.G. This error .DELTA..omega.G is used to compensate the actual error, so that the gyro control can be made more accurate.

REFERENCES:
patent: 4725843 (1988-02-01), Suzuki et al.
patent: 5227806 (1993-07-01), Eguchi
patent: 5463402 (1995-10-01), Walrath et al.
patent: 5557285 (1996-09-01), Bender et al.

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