一种新的ATI动目标检测方法  

Novel method of ATI moving object detection

作　　者：郑春明[1] 沈汀[1] 冯宏川[1] 

机构地区：[1]中国科学院电子学研究所,北京100080

出　　处：《电子测量技术》2007年第8期20-25,共6页Electronic Measurement Technology

摘　　要：在传统沿迹干涉合成孔径雷达(ATI-SAR)动目标检测中,只利用干涉相位进行动目标检测,往往会造成较高的虚警率。本文提出了一种新的ATI动目标检测方法,该方法在干涉相位判决之后,利用复相关系数对该判决结果进行再一次判决,以降低检测虚警率。为了降低计算量,该方法只对干涉相位大于相位阈值这部分像素进行复相关系数检测。文中给出了该算法的理论推导和算法流程,并进行了仿真实验,仿真结果表明,该方法能有效地降低动目标检测的虚警率。Conventional along-track interferometric synthetic aperture radar （ATI-SAR） only applies the interferometric phase detection during moving object detection, which causes high false alarm rate. To reduce the false alarm, this paper proposes a novel approach that combines the conventional interferometric phase detection with the complex correlation coefficient detection. This method applies the complex correlation coefficient detection only to the pixels selected by the interferometric phase detection to reduce its computing complexity. In this paper, the theory of the method is deduced; the flow of the method is introduced. The simulation results demonstrate that this method can greatly reduce the false alarm rate of moving object detection.

关 键 词：合成孔径雷达 沿迹干涉 动目标检测 相关系数 

分 类 号：TN957[电子电信—信号与信息处理]