Passive ranging system

Details Passive ranging system Passive ranging system

1968-02-27

1977-02-15

Hubler, Malcolm F.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343 15, G01S 904

Patent

active

040084701

ABSTRACT:
A passive ranging system for determining the range of a target radar by uizing the scan characteristics of the target radar. Receivers are placed on each of two aircraft flying in a specified formation. One aircraft relays detected pulse amplitude envelopes to the other aircraft. The second aircraft measures time delay between impacts of the main beam of the target radar on the two aircraft and a computer determines range according to equation R=D/K.DELTA.t where .DELTA.t is the measured time difference, D is the distance between aircraft and K is a constant depending on the type of target radar.

REFERENCES:
patent: 2552172 (1951-05-01), Hawes
patent: 2972141 (1961-02-01), Barlow et al.
patent: 3153232 (1964-10-01), Fletcher et al.
patent: 3212091 (1965-10-01), Bissett et al.
patent: 3264641 (1966-08-01), Palmer

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