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引言从离散的宽带干扰源的背景中分离出有用信号的问题,在雷达、声纳、地震以及其它某些科学技术领域中,都具有很大的实用价值。解决这个问题的效果在很大程度上决定于对干扰源的信号抑制问题解决得如何。在窄带干扰的情况下,通过由矢线阵列形成相应的方向性图,就是说使天线方向图的零点指向干扰方向,就可相当简单地解决这个问题。为了形成这样的天线阵方向图只需要求在天线阵单元的输出端中有一组适当的加权系数就行了。
INTRODUCTION The problem of separating useful signals from the background of discrete broadband interferers has great practical value in the fields of radar, sonar, earthquakes and some other fields of science and technology. The effect of solving this problem depends to a large extent on how to solve the signal suppression problem of the interference source. In the case of narrow-band interference, this problem can be fairly easily solved by forming a corresponding directional pattern from the vector array, that is to say pointing the zero of the antenna pattern in the direction of the interference. In order to form such an antenna array pattern it is only necessary to have a proper set of weighting factors in the output of the antenna array unit.