Unambiguous wide baseline interferometer

Details Unambiguous wide baseline interferometer Unambiguous wide baseline interferometer

1984-06-01

1987-01-20

Blum, Theodore M.

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

Directive

Beacon or receiver

342417, G01S 502

Patent

active

046383212

ABSTRACT:
The angle of arrival (.theta.) of an RF signal is determined using only two widely spaced antennas (A, B). A coarse/fine measurement system (40) is disclosed wherein the actual time delay between zero-crossings responsive to the same RF carrier cycle within the pulse envelope arriving at each antenna is determined. There is no need for additional antenna pairs with different baselines to otherwise resolve ambiguity.

REFERENCES:
patent: 2489304 (1949-11-01), Marchand et al.
patent: 3383690 (1968-05-01), Keller
patent: 3633205 (1972-01-01), Lee et al.
patent: 3714656 (1973-01-01), Meranda
patent: 3789408 (1974-01-01), Ichihara
patent: 3878381 (1975-04-01), Broder et al.
patent: 3936831 (1976-02-01), Jones

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