Direction-determining system

Details Direction-determining system Direction-determining system

1986-11-12

1988-01-12

Blum, Theodore M.

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

Directive

Beacon or receiver

342357, G01S 138

Patent

active

047194693

ABSTRACT:
A direction determining system having a Global Positioning System (GPS) receiver, a linear antenna array and a fast switching facility, the linear antenna array comprised of at least two antenna elements and the GPS receiver including two Costas Loops. The fast switching facility permits an input signal received by the two antenna elements to be processed and alternately supplied to the Costas Loops in synchronism for measuring the phases of the input signals received nearly simultaneously. The phase difference between the output signals of the two Costas Loops is measured in a phase meter and the pointing angle of the linear antenna array relative to the direction of a GPS satellite is determined by interferometry.

REFERENCES:
patent: 4034376 (1977-07-01), Barton
patent: 4246581 (1981-01-01), Di Toro
patent: 4368470 (1983-01-01), Mori et al.
patent: 4384293 (1983-05-01), Deem et al.
patent: 4488155 (1984-12-01), Wu
patent: 4638320 (1987-01-01), Eggert et al.
patent: 4644358 (1987-02-01), Sekine
patent: 4647935 (1987-03-01), Helbling

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