任意线阵的直接数据域空时自适应处理方法  

Direct Data Domain Approach with Space-Time Adasptive Processing for Arbitrary Linear Array

作　　者：杨志伟[1] 贺顺[1,2] 廖桂生[1] 欧阳缮[3] 

机构地区：[1]西安电子科技大学雷达信号处理重点实验室,陕西西安710071 [2]西安科技大学通信与信息工程学院,陕西西安710054 [3]桂林电子科技大学信息与通信学院,广西桂林541004

出　　处：《电子学报》2011年第12期2900-2904,共5页Acta Electronica Sinica

基　　金：国家自然科学基金(No.60901066);长江学者和创新团队发展计划(No.IRT-0954);国防预研基金(No.9140C0101081001);博士点基金(No.20090203120006);中央高校基本科研业务费联合资助(No.JY10000902013)

摘　　要：研究机载预警雷达在前视任意线阵构形下的地杂波和干扰抑制问题.在采用迭代法获得单个距离门回波数据的空时二维谱基础上,结合图像特征分析提取杂波和干扰分布特性曲线,通过将待检测单元数据向重构的杂波和干扰子空间正交投影检测动目标.能避免直接数据域方法存在的空时孔径损失和克服传统统计空时自适应处理(STAP)方法在非平稳环境性能下降问题,仿真结果表明本文方法具有良好的动目标检测性能.This paper describes a new non-homogeneous clutter and interference mitigation method for forward-looking airborne early warning radar with arbitrary linear array configuration.The approach is performed in three stages,i.e.the minimal mean square space-time spectral estimation with iterative processing which using only a single range bin data,the clutter and jammer ridge reconstruction based on image feature extraction,moving target detection with subspace projection.An important feature of the proposed method is its ability to extract requisite implementation information from the data itself without sacrificing space-time aperture.A preliminary result against an airborne simulation data demonstrates the effectiveness of the proposed method.

关 键 词：机载预警雷达 地面运动目标检测 空时自适应处理 非平稳杂波抑制 

分 类 号：TN957.52[电子电信—信号与信息处理]