Interferometer radar elevation angle measurement apparatus

Details Interferometer radar elevation angle measurement apparatus Interferometer radar elevation angle measurement apparatus

1971-07-28

1976-03-02

Borchelt, Benjamin A.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343100TD, G01s 922

Patent

active

039421775

ABSTRACT:
In the measurement of the phase difference (proportional to the elevation angle of a target) provided by the radar target signals that are received by each antenna of an antenna array, a comparison of the responses of the signal processing circuitry to the radar target signals and to two signals with an adjustable known phase difference, causes the known phase difference to change until the result of the comparison is a null. The known phase difference, at the time that the comparison provides a null, is equal to the phase difference provided by the radar target signals and is independent of phase errors introduced by the processing circuitry.

REFERENCES:
patent: 3181160 (1965-04-01), Pichafroy
patent: 3309701 (1967-03-01), Bollinger et al.
patent: 3394374 (1968-07-01), Weiss
patent: 3438044 (1969-04-01), Elia et al.

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