重叠子阵平面相控阵ADBF的方向图控制  

Pattern control for planar phased array ADBF with overlapped subarrays

作　　者：胡航[1] 李绍滨[1] 邓新红[1] 

机构地区：[1]哈尔滨工业大学电子与信息技术研究院,黑龙江哈尔滨150001

出　　处：《系统工程与电子技术》2007年第12期2001-2005,共5页Systems Engineering and Electronics

基　　金：航天支撑项目基金资助课题(2003-HG18)

摘　　要：提出了二维子阵级ADBF的信号模型,适用于任意的平面相控阵。研究了基于失配最优检测器的二维子阵级ADBF,它是对常规二维子阵级ADBF的一种修正,通过引入一个失配的导向向量,可对方向图进行有效的控制。该方法在无干扰时可得到所希望的静态方向图,因而解决了ADBF在自适应与非自适应工作模式之间的转换问题;而在存在干扰的情况下,与常规方法相比,明显改善了旁瓣电平。基于失配最优检测器的方法对重叠子阵和非重叠子阵均适用,克服了基于归一化的方法只适用于非重叠子阵的局限性。仿真结果证明了所提出方法的有效性。The signal model of 2-D ADBF at subarray level suitable for any planar phased array is presented. 2-D ADBF at subarray level based on mismatched optimum detector is studied which is a modification for conventional 2-D ADBF at subarray level. By introducing a mismatched steering vector, this method achieves the desired quiescent pattern in the absence of jammer, thereby the conversion problem between adaptive and non-adaptive work modes of ADBF is resolved. On the other hand, it improves the sidelobe level markedly compared with the conventional method in the presence of jammer. The method based on mismatched optimum detector is suitable for both non-overlapped and overlapped subarrays and overcomes the limitation that the method based on normalization processing only suits non-overlapped subarrays. Simulation results indicate the validity of the introduced method.

关 键 词：子阵级相控阵 自适应数字波束形成 失配最优检测器 方向图控制 旁瓣抑制 

分 类 号：TN957.51[电子电信—信号与信息处理] TN911.7[电子电信—信息与通信工程]