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�������պ����ѧѧ�� 2009, Vol. 35 Issue (7) :904-908    DOI:
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������ͨ��SAR/GMTI���ܷ������Ľ�����
ʷ��ӡ, ������, �� ��*
�������պ����ѧ ������Ϣ����ѧԺ, ���� 100191
Performance analysis and improved method for airborne three-channel SAR/GMTI system
Shi Hongyin, Zhou Yinqing, Chen Jie*
School of Electronics and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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ժҪ �ڷ����������ͨ��SAR(Synthetic Aperture Radar)���涯Ŀ��ָʾ(GMTI,Ground Moving Target Indication)����ԭ��Ļ�����,���һ�ֽ�ȫ����ͨ��SAR/GMTI�������۷���.�÷���ͬʱ�������ػ������ٶ���ͨ����ƥ�䡢�Ӳ��ڲ��˶���ϵͳ��������Ҫ�������,�������˸������ض�ϵͳ���ܵ�Ӱ��.�������ͨ��SAR/GMTI�������ڵ�ȱ���Dz���ͬʱ������ģ���ɼ���ٶȡ���С�ɼ���ٶȺ�ä��ָ�������������ϵͳ��Ƶ�Ҫ��.������һ���µ����߲��÷����Ͷ�Ŀ���ⷽ��,�Ľ��ļ�ⷽ���ڲ�����ͨ������ǰ����,�Ϻõؽ���˸�����,���кܺõ�ʵ����.���ͨ�������������֤���·����Ŀ�����.
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Abstract�� A comprehensive performance analysis method of three-channel SAR(synthetic aperture radar) GMTI(ground moving target indication) was presented after analyzing the theory of conventional three channel SAR ground moving target indication methods. The main error factors such as velocity variety of radar platform, receiver channel mismatch, clutter internal motion and system noise were considered in this method and the detection performance of each error factor affect on was analyzed too. The shortcoming of conventional three channel SAR/GMTI methods is that the performance of minimum detectable velocity, ambiguous speed and blind-speed simultaneously can-t be improved to meet the requirements of the system. The improved method solves the problem without increasing receiving channels by rearranging the transmitting and receiving antennae. Theoretical analysis and simulation results show the validity of this scheme.
Keywords�� synthetic aperture radar   ground moving target indication   ambiguous speed   minimum detectable velocity   blind-speed   clutter internal motion     
Received 2008-12-05;
About author: ʷ��ӡ(1976-),��,ɽ��������,��ʿ��,��Ϊ��ɽ��ѧ��ϢѧԺ��ʦ,shihongyin@ee.buaa.edu.cn.
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ʷ��ӡ, ������, �� ��.������ͨ��SAR/GMTI���ܷ������Ľ�����[J]  �������պ����ѧѧ��, 2009,V35(7): 904-908
Shi Hongyin, Zhou Yinqing, Chen Jie.Performance analysis and improved method for airborne three-channel SAR/GMTI system[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2009,V35(7): 904-908
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