Moving target indicator (MTI) radar systems

摘要: Method and apparatus for the detection of a ground moving target using platform MTI radar system are disclosed. Such is detected by comparing power level return signals passing in difference channel monopulse receiver with predetermined level. In one embodiment, antenna such scans swath returns having Doppler frequency equal to associated clutter disposed along boresight axis compared When at greater than from (i.e., level), indicated. embodiment particularly adapted detect "slow" targets, that is, targets main beam within spectrum beam. second invention through outside sum frequency. former less latter level, This "fast" (that but frequencies beam) large stationary objects illuminated side lobes antenna.