Radar system having quadrature phase detector compensator

Details Radar system having quadrature phase detector compensator Radar system having quadrature phase detector compensator

1974-10-03

1976-04-13

Tubbesing, T. H.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343 5DP, 343 77, G01S 740

Patent

active

039507505

ABSTRACT:
Method and apparatus are disclosed for correcting amplitude and phase imbalances between the "in phase" and "quadrature" channels of a digital signal processor by determining a correction coefficient from a test signal periodically introduced into the quadrature phase detector of a radar system. The frequency spectrum of the signal at the output of the phase detector in response to each such test signal is utilized to produce a correction coefficient for application to radar return signals passing through the phase detector during normal radar operation, thereby providing true quadrature radar return signals for digital processing.

REFERENCES:
patent: 3794998 (1974-02-01), Pearson, Jr. et al.
patent: 3883870 (1975-05-01), Kunz

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