广义旁瓣对消器(GSC)是线性约束最小方差波束形成器的等效结构。但由于实际互耦误差的影响,GSC的支路会出现期望信号泄漏,导致此波束形成器不能正常工作。文中基于一种新定义的互感矩阵,对阵元之间的互耦进行精确的量化和分析,提出了一种GSC波束形成器的互耦补偿方法。该方法通过修改GSC的参数,解决了期望信号相消的问题。仿真试验表明,该方法能精确的校正阵列天线阵元间的互耦效应,使GSC波束形成器对互耦误差具有稳健性。

General Sidelobe Canceller(GSC) is an alternative form of Linear Constrained Minimum Variance beamformer.Due to the errors in practical applications,the expected signal will be eliminated and the GSC can not work well.The purpose of this paper is to calibrate the mutual coupling effects for GSC beamformer.Based on the new definition of the mutual impedance,a new practical way by improving the parameters of GSC is presented.The simulation results show that the mutual coupling effects can be compensated properly by introducing the method given in this paper.

TN820