基于前向阵雷达的三通道地面快速动目标检测与成像方法  

Approach for Ground Fast-moving Target Detection and Imaging Based on the Three-channel Forward-looking Radar

作　　者：张佳佳[1] 周芳[1] 孙光才[1] 邢孟道[1] 保铮[1] 

机构地区：[1]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1期8-14,共7页Journal of Electronics & Information Technology

基　　金：国家自然科学基金重大项目(60890072)资助课题

摘　　要：针对3通道前向阵雷达SAR-地面运动目标检测(SAR-GMTI)体制,该文提出一种易实现的地面快速动目标检测与定位新方法。该方法针对快速运动目标距离散焦严重问题及多普勒谱折叠带来的处理过程繁琐等问题,在杂波抑制后对快速动目标进行重聚焦从而实现对快速目标的检测,并在重聚焦过程中先充分压缩多普勒带宽再进行距离走动校正,有效避免了多普勒谱折叠。仿真结果验证了该文方法的有效性。A new practical approach for ground fast-moving target detection and imaging is presented for the three-channel SAR-Ground Moving Target Indication （SAR-GMTI） system based on the forward-looking configuration. Considering the facts that fast-moving targets defocus in SAR image and Doppler spectrum folding demands complicated processing, fast-moving targets after clutter suppression are refocused in order to detect these targets, in the procedure of which the Doppler spectrum is adequately compressed before range walk correction which avoids effectively Doppler spectrum folding. The simulation results validate the effectiveness of the approach presented in this paper.

关 键 词：前向阵雷达 SAR-地面运动目标检测(GMTI) 地面快速运动目标 多普勒谱折叠 

分 类 号：TN957.52[电子电信—信号与信息处理]