Sidelobe suppression method for inter-beam amplitude comparison of multi-beam array

The invention relates to a sidelobe suppression method for inter-beam amplitude comparison of a multi-beam array. Simultaneous multi-beam coverage of a detection airspace is realized by adopting an FFT method; amplitude comparison is carried out on the detected signals, beams in the target direction are selected from the multiple beams, sidelobe signals deviating from the target direction are suppressed, the target signals which reach different frequencies at the same time and are in different directions can be separated, and accurate direction finding of the target direction is completed in combination with an amplitude comparison direction finding algorithm. The method is high in hardware resource utilization rate, has the characteristic of high target detection orientation accuracy, canalso have a very good effect at a low signal-to-noise ratio, and is particularly suitable for engineering implementation of a broadband digital phased array system. 本发明涉及一种多波束阵列波束间比幅的副瓣抑制方法，采用FFT方法实现侦测空域同时多波束覆盖，对检测后的信号进行幅度比较