QRD-DMI自适应方向图综合算法的FPGA实现  

Realization of QRD-DMI Algorithm of Adaptive Pattern Synthesis Based on FPGA

作　　者：田可[1] 李彪[1] 杨向华[1] 

机构地区：[1]中国工程物理研究院电子工程研究所,四川绵阳621900

出　　处：《现代雷达》2009年第3期53-55,59,共4页Modern Radar

基　　金：国家863计划项目

摘　　要：在自适应方向图综合算法理论分析的基础上,应用直接矩阵求逆的计算方法,文中详细阐述了基于可编程门阵列(FPGA)的直线阵自适应方向图综合的设计与实现,通过CORDIC块映射实现了QR分解和权值计算,对权值计算后得到的方向图进行了分析,结果表明该方向图基本满足设计要求。该方法实现了方向图主瓣形状、旁瓣电平、零陷的自适应控制。This paper suggests a method for design and realization of adaptive pattern synthesis of linear arrays based on Field Pro- grammable Gate Array（FPGA）. The synthesis method is based on analyzing adaptive pattern synthesis theory with QRD-DMI algo- rithm. Through mapping, the CORDIC block performs the QR-decomposition and calculation of the values of Weighting function. The analysis of the pattern indicates the pattern meets requirement. This method can realize adaptive control of main lobe shaping, side lobe levels and null position.

关 键 词：方向图综合 自适应 直接矩阵求逆 QR分解 坐标旋转计算机 

分 类 号：TN821[电子电信—信息与通信工程]