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引言现代雷达采用多单元的相控阵天线,以便在接收信号的到达方向上具有高分辨力。相控阵天线存在问题之一是,如何提高对有源干扰的抗干扰能力,即相控阵天线对干扰的自适应力。相控阵天线的自适应可以通过对天线各单元的信号进行特殊的加权求和来实现。加权系数选择得好,可以大大地削弱干扰的影响,而不会使天线方向图有很大的畸变。近十年来,关于自适应相控阵天线已经发表了大量文章,其中有根
Introduction Modern radars use multi-unit phased array antennas to provide high resolution in the direction of arrival of the received signal. One of the problems with the phased array antenna is how to improve the anti-interference ability against the active interference, that is, the adaptive force of the phased array antenna to the interference. The phased array antenna’s self-adaptation can be realized through the special weighted summation of the signal of every unit of the aerial. The choice of the weighting coefficients well reduces the effects of interference without significant distortion of the antenna pattern. In the past decade, a large number of articles have been published on adaptive phased array antennas, including roots