摘要
为了提高多通道合成孔径雷达(Synthetic Aperture Radar,SAR)对地面运动目标检测((Ground Moving-Targets Indication,GMTI)的性能,并建立有效的信号检测模型,针对沿迹干涉测量(Along-Track Interfero-metric,ATI)和偏置相位中心天线(Displaced Phase Center Antenna,DPCA)处理,给出一种统一的多通道SAR-GMTI检验量的简单表达式,推导出多通道SAR-GMTI的检验量服从1×1的复中心Wishart分布,即卡平方(χ2)分布,并分别得到基于ATI和DPCA而实现运动目标检测的概率密度表达式。
In order to improve the performance of ground moving-targets indication（GMTI） with Synthetic Aperture Radar（SAR） system,and to establish an effective signal detection model,the displaced phase center antenna（DPCA） method and the along-track interfero-metric（ATI） phase method are considered.For these methods,a canonical framework is set up,and a statistical test metric for multi-channel SAR-GMTI is determined,which is of Wishart distribution with complex centre in case 1×1,namely χ2-distribution.Besides,the probability density functions for moving targets detection with ATI and DPCA are given respectively.
出处
《西安邮电学院学报》
2011年第4期9-12,20,共5页
Journal of Xi'an Institute of Posts and Telecommunications
基金
陕西省教育厅自然科学类专项科研计划基金资助项目(2011JK1014)
西安邮电学院中青年科研基金资助项目(109-0412)
关键词
多通道SAR
地面动目标检测
偏置相位中心天线
沿迹干涉测量
统计特性分析
multi-channel SAR
ground moving-targets indiction
displaced phase center antenna
along-track interferometric
statistical characteristic analysis
