ADAPTIVE DIGITAL BEAMFORMING ARCHITECTURE AND ALGORITHM FOR NULLING MAINLOBE AND MULTIPLE SIDELOBE RADAR JAMMERS WHILE PRESERVING MONOPULSE RATIO ANGLE ESTIMATION ACCURACY

摘要

Monopulse radar operation is improved by nulling a single mainlobe jammer and multiple sidelobe jammers while maintaining the angle measurement accuracy of the monopulse ratio. A sidelobe jammer cancelling adaptive array is cascaded with a mainlobe jammer canceller, imposing a mainlobe maintenance technique or constrained adaptation during the sidelobe jammer cancellation process so that results of the sidelobe jammer cancellation process do not distort the subsequent mainlobe jammer cancellation process. The sidelobe jammers and the mainlobe jammer are thus cancelled sequentially in separate processes.