Radar calibration structure and method

Details Radar calibration structure and method Radar calibration structure and method

2011-07-19

2011-07-19

Tarcza, Thomas H (Department: 3662)

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

Testing or calibrating of radar system

By monitoring

C342S165000

Reexamination Certificate

active

07982664

ABSTRACT:
A radar system with an array antenna includes various signal paths, including beamformers, extending between an exciter, a receiver, and the array antenna. The signal paths are calibrated by a method that includes frequency modulation of the exciter signals that reach the “antenna” and additional amplitude modulation of signals just as they enter the receiver. Leakage paths directly from the exciter to the receiver are unmodulated, those extending from the exciter through the beamformer are amplitude modulated, and only those reaching the “antenna” and returning to the receiver are both amplitude and frequency modulated. The receiver is tuned to receive only the “doubly-modulated” signals, which tends to reject leakage signals.

REFERENCES:
patent: 7057550 (2006-06-01), Aker

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