Dual-mode radar receiver

Details Dual-mode radar receiver Dual-mode radar receiver

1981-12-22

1986-02-04

Tubbesing, T. H.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

G01S 1344

Patent

active

045689407

ABSTRACT:
Apparatus is disclosed which processes sum and difference signals generated from received radar signals to provide target angle information in terms of amplitude or phase. The system includes an IF section and an RF section which processes the sum and difference signals. In the amplitude mode, the sum and difference signals are processed in a conventional manner through a hybrid combiner to an amplitude angle detector which provides the desired target information. A selectively controllable phase shifter is provided as part of the IF section to control the phase of the difference signals provided as output signals therefrom. In the amplitude mode, the phase delay associated with of the signals in the sum and difference channels is matched (zero phase difference between channels) so that amplitude information is processed to generate the target information. In the phase mode, the difference signals are incremented by 90.degree. which generates signals indicative of target phase information. These output signals are processed by a phase angle detector to provide the desired target information.

REFERENCES:
patent: 3128461 (1964-04-01), Case, Jr.
patent: 3197776 (1965-07-01), Winn
patent: 3863259 (1975-01-01), Boughnou et al.

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