Radar altimeter tracking circuit apparatus

Details Radar altimeter tracking circuit apparatus Radar altimeter tracking circuit apparatus

1978-02-24

1979-11-27

Hubler, Malcolm F.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

G01S 912

Patent

active

041763530

ABSTRACT:
A radar altimeter having a tracking circuit which includes a controllable reference signal generator which is adapted to selectively control the tracking circuit so that there will be no indication of an altitude change in the event of a momentary loss of a received video signal due to the fading of the video signal or other condition requiring the locking of the tracking circuit because of a lack of reliability of the received video signal.

REFERENCES:
patent: 3165739 (1965-01-01), Long et al.
patent: 3242488 (1966-03-01), Leyde et al.
patent: 3344423 (1967-09-01), Thue
patent: 3573825 (1971-04-01), Westby

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