Communications: directive radio wave systems and devices (e.g. – Testing or calibrating of radar system – By simulation
Patent
1989-10-16
1991-01-01
Tarcza, Thomas H.
Communications: directive radio wave systems and devices (e.g.,
Testing or calibrating of radar system
By simulation
342169, G01S 740
Patent
active
049821962
ABSTRACT:
The present invention provides a radar simulation system with at least two counters. The first counter is a coarse counter 20/30 that counts a transmit pulse interpulse periods to provide a coarse return delay at the beginning of a radar look. The second counter is a fine counter 22/36 which counts, after the coarse counter has counted down to zero, from each subsequent transmit pulse to the time for the return pulse. Once the coarse counter has finished counting, the fine counter, which can be reset and reloaded during the look responsive to each transmit pulse, can provide return targets repeating at the same distance at the pulse repetition frequency. A cyclic counter 24 can also be added that produces the return pulses by cyclically counting the interpulse period one the fine counter has timed out. If the cyclic counter is used the fine counter is not reloaded during the look. If the target moves more than the range resolution of the radar during the radar look, a phase-in counter 70 and secondary return counter 66 adjust the delay of the return pulses to simulate target movement during the radar look.
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Thomas Robert W.
Yaron John D.
Hellner Mark
Tarcza Thomas H.
Westinghouse Electric Corp.
Williamson John K.
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