新一代相控阵雷达的天线阵列规模庞大,一般含有几百乃至上万个阵元。在阵元级实现自适应波束形成抗干扰和空时自适应处理杂波抑制,会极大地增加系统开销,甚至难以实现。在实际应用中,考虑到系统成本、信号处理运算量等因素,需要将大型阵列划分为适当的子阵,以减小接收所需通道数。文中通过子阵优化划分数学建模,研究子阵划分对干扰、杂波抑制性能的影响,探索最优子阵划分的数学求解方法,为大型阵列雷达研制提供理论支撑和工程可实现算法。

The antenna of phased array radar for the new generation is huge, and generally contains hundreds or even thousands of elements. Anti-interference by ADBF(Adaptive Digital Beam Forming) or clutter suppression by STAP(Space and Time Adaptive Performing) on the element level, could significantly increase the system load, and even hard to achieve. Considering the system cost and computation load of signal processing in practical, large array needs to be divided into proper subarrays, to reduce the required receiving channels. In this article, mathematical modeling of optimal subarray division, and also the influence to the performance of interference or clutter suppression are considered. In addition, the mathematical solution of optimal subarray division is also researched, which could provide theoretical and engineering algorithm to be realized on large scale array radar equipment.

TP971. 1