远距离支援干扰下DBF雷达作用距离分析  

Analysis of DBF Radar Detection Range Under Stand-off Interference

作　　者：张亮[1] 徐振海[1] 熊子源[1] 王雪松[1] 

机构地区：[1]国防科技大学电子科学与工程学院,湖南长沙410073

出　　处：《雷达科学与技术》2012年第3期241-245,共5页Radar Science and Technology

基　　金：国家自然科学基金(No.60901072)

摘　　要：在平面相控阵中应用DBF技术对于提高雷达系统性能具有重要意义。研究了数字波束形成(DBF)在平面相控阵雷达中的应用。建立了子阵级DBF的信号模型,根据一维阵元级DBF推广得到了子阵级DBF,引入雷达方程和干扰方程,总结得到了雷达作用距离与雷达、干扰和目标参数的关联关系。分析了远距离支援干扰对DBF雷达作用距离的影响,并给出了仿真分析,仿真结果表明:子阵级DBF能在很大程度上改善雷达的作用距离,为研究DBF雷达的抗干扰性能提供支撑。The DBF technology is of great importance to the phased array radar. In this paper the application of DBF at subarray level to the phased array radar is studied. The signal model at subarray level is presented, as well as the DBF. Then the relationship hetween detection range and the input parameters is given, including radar parameters, jamming parameters and target parameter. Finally the effect caused by the stand-off interferences on DBF radar detection range is analyzed. Simulation results demonstrate that DBF at subarray level can largely increase radar detection range, which is helpful to analyze the and-interference performance of DBF radar.

关 键 词：数字波束形成 子阵级DBF 远距离支援干扰 雷达作用距离 

分 类 号：TN953.5[电子电信—信号与信息处理]