Stabilized ship antenna system for satellite communication

Details Stabilized ship antenna system for satellite communication Stabilized ship antenna system for satellite communication

1992-03-13

1993-07-13

Hille, Rolf

Communications: radio wave antennas

Antennas

With means for moving directive antenna for scanning,...

343763, 343766, 342359, H01Q 300

Patent

active

052278069

ABSTRACT:
A stabilized antenna system. An inclination angle detector is mounted on an AZ frame and detects an inclination angle around an elevation, and the elevation of the antenna is controlled by a successive addition of the detected inclination angle to simplify control algorithm. Furthermore, the inclination angle detector includes a reciprocal combination filter for combining outputs of an inclinometer and a rate sensor. The reciprocal combination filter includes two reciprocal filters, and parameters of the reciprocal filters are adaptively controlled depending on frequency and amplitude of the inclination to ensure the reciprocity in a necessary frequency range.

REFERENCES:
patent: 2421028 (1947-05-01), King
patent: 2604698 (1952-07-01), Ewing
patent: 4675688 (1987-06-01), Sahara et al.
Takayasu Shiokawa et al., "Development of a Compact Antenna System for the Inmarsat Standard-B SES in Maritime Satellite Communications", Treatises of Electronic Communications Society, SANE84-19, Aug. 31, 1984, pp. 17-24.

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