Digital VOR bearing measurement apparatus

Details Digital VOR bearing measurement apparatus Digital VOR bearing measurement apparatus

1983-03-07

1984-05-08

Blum, Theodore M.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

364451, G01S 144

Patent

active

044478143

ABSTRACT:
A VOR bearing measurement scheme wherein the received 30 hertz reference signal is delayed a fixed time to produce an approximately 90 degree phase shifted reference signal. The reference is multiplied by the phase shifted, itself and the variable signals to produce first, second and fourth signals. The variable signal is then multiplied by the phase shifted signal to produce the third signal. The bearing is then indicative of the ratio of filtered third and fourth signals less the ratio of filtered first and second signals.

REFERENCES:
patent: 4074267 (1978-02-01), Knox

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