一种机载相控阵雷达杂波抑制的空时块对消器设计方法  

Design of a Space-time Block Canceller for Airborne Radar to Suppress Clutter

作　　者：向聪[1] 罗丁利[1] 冯大政[2] 

机构地区：[1]西安电子工程研究所,西安710100 [2]西安电子科技大学雷达信号处理国家重点实验室,西安710071

出　　处：《电子与信息学报》2013年第8期1869-1874,共6页Journal of Electronics & Information Technology

摘　　要：机载雷达的工作参数决定了地杂波在角度-多普勒空间的分布轨迹,该文首先在充分利用载机速度和雷达工作参数等先验信息的基础上,构建了机载相控阵雷达的杂波矩阵模型。然后基于空时等价性原理,提出了一种杂波空时块对消器的设计方法,该方法通过构造一个空时2维非自适应滤波器以对消杂波。仿真实验表明,该对消器可作为杂波预处理器,能有效改善常规MTI处理和降维STAP算法的杂波抑制性能。The distribution of ground clutter in angle-doppler space depends on the information of platform velocity,radar parameters and so on,which is known as the prior information.In this paper a model with matrix form of the ground clutter data is established.Then based on the equivalence between space and time domain,a Space-Time Block Canceller（STBC） for airborne radar to suppress the ground clutter is proposed via designing a space-time non-adaptive filter.Simulation results are given to show that the proposed STBC can be used as an efficient pre-filtering tool before the conventional Moving Target Indication（MTI） processing and the classical reduceddimension adaptive processing.

关 键 词：机载雷达 空时处理 块对消器 预滤波 

分 类 号：TN959.73[电子电信—信号与信息处理]