Adaptive doppler DF system

Details Adaptive doppler DF system Adaptive doppler DF system

1991-10-22

1994-06-14

Blum, Theodore M.

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

Directive

Beacon or receiver

342445, G01S 504

Patent

active

053214102

ABSTRACT:
In an antenna array of N elements in a circle around a large through mast, direction finding capabilities are enhanced for an incoming signal where fewer elements are needed compared to standard quasi-Doppler or pseudo-Doppler methods. Azimuth detection takes advantage of the scattered wave from the through mast where measurements of amplitude and relative phase shift shows an induced distortion pattern from through mast scattered waves. Analyzing the amplitude and phase measurements determines the azimuth angle of the arrival of the incoming signal.

REFERENCES:
patent: 4207572 (1980-06-01), Hipp et al.
patent: 4639733 (1987-01-01), King et al.

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