Method and apparatus for sidelobe reduction in radar

摘要: In a system for reducing sidelobes in adaptive receiving array antennas, an auxiliary signal is radiated through omnidirectional antenna collocated with the phase center of antenna. The so transmited as to form probe or pilot beam notch main-beam direction by transmitting both and simultaneously. relative phases antennas are controlled obtain near-zero radiation direction. Adaptive control loops receive returns from adjust weights used low sidelobe pattern reception main radar signal, which transmitted directional pattern. Either time frequency separation may be distinguish beam.