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�������պ����ѧѧ�� 2004, Vol. 30 Issue (12) :1147-1150    DOI:
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Realization method of moving target detection based on along-track interferometry
Sun Na, Zhou Yinqing, Li Jingwen*
School of Electronics and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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ժҪ �����һ�ֻ���˫�׾������غ��������(ATI, Along-Track Interferometry)�Ķ�Ŀ���⡢���ټ���λ��ʵ�ַ���.�÷�����DPCA(Displaced Phase Center Antenna)�������,��Ҫ�����������ٶȺ������ظ�Ƶ��֮����������ϸ����Լ����,ͬʱ�˷���DPCA������CSI(Clutter Suppression Interferometry)���������Ķ�Ŀ��ز�ǿ����Ŀ�꾶���ٶȰ����ҹ��������������˶�����Ŀ��ļ�������IJ���.��ATI���۷����Ļ�����,���������ø���ͼ��ĸ�����λ��Ϣ���ж�Ŀ���⡢�����ٶȷ������Ƽ���λ��һ��ʵ�ַ���.���ּ�ⷽ���ܹ���ɱ����汳���Ӳ���û�������˶�Ŀ��ļ�⡢���ټ���λ.�������������֤������Ч��.
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Abstract�� An algorithm of moving target detection, radial velocity estimation and relocation based on ATI(along-track interferometry) with dual-aperture antenna was proposed. Compared with DPCA (displaced phase center antenna) technique, this method need not satisfy the strict constraint between platform velocity and pulse repetition frequency. Meanwhile, it overcame the shortcoming of decreased slow moving target detection ability because of moving target amplitude cancellation varying with radial velocity according to sinusoid rule generated by DPCA and CSI (clutter suppression interferometry) techniques. On the basis of ATI principle analysis, the realization method of moving target detection, radial velocity estimation and relocation using interferometric phase information was presented. This method can perform the detection, radial velocity estimation and relocation of moving targets masked by ground clutters. Computer simulation results show the effectiveness.
Keywords�� synthetic aperture radar   interference   moving target detection   along-track interferometry     
Received 2003-06-23;

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About author: �� ��(1975-),Ů,ɽ����̨��,��ʿ��, sunna75@sohu.com.
����, ������, ���.����ATI������һ�ֶ�Ŀ�����ʵ�ַ���[J]  �������պ����ѧѧ��, 2004,V30(12): 1147-1150
Sun Na, Zhou Yinqing, Li Jingwen.Realization method of moving target detection based on along-track interferometry[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2004,V30(12): 1147-1150
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