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�������պ����ѧѧ�� 2005, Vol. 31 Issue (10) :1063-1065    DOI:
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Motion compensation processing for airborne SAR data based on real sensing data of IMU/GPS
Ye Shaohua, Zhou Yinqing*
School of Electronics and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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ժҪ �����˻���SAR(Synthetic Aperture Radar)��������ģʽ���˶���������ԭ��,ͨ���Լ���IMU/GPS(Inertial Measurement Units/Global Positioning System)����ṩ��λ�ò������з���,����Y12�ػ�ƽ̨���кܴ���˶����,�ڴ˻��������ø߾��ȼ���IMU/GPS����ṩ��������λ���ľ�ȷλ�ò���,��Ͼ���-�����ճ����㷨�����˻���SAR���ݵ��˶���������,����������ô�IMU/GPS�ṩ���˶��������жԾ��кܴ��˶�����SAR�����˶�������,�Ѳ���Ҫ���㸺�����ص��Ծ۽����㷨���в����˶�����,���ܵõ��������ĸ߷ֱ���SARͼ��.
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Abstract�� The motion compensation technique for airborne stripmap mode SAR(synthetic aperture radar) was briefly analyzed, the strong motion errors with small aircraft Y12 were evident through analyzing the position parameters offered by an IMU/GPS(inertial measurement units/global positioning system) unit with laser gyros, then the motion compensation processing, which combined with range-Doppler image formation algorithm, was tested based on the high precision APC(antenna phase center) position parameters provided by the laser IMU/GPS unit. The results showed that high quality SAR images could be obtained directly from SAR raw data with serious motion errors through motion compensation procedure, so any kind of autofocus procedures with heavy computation load does not needed to correct the residual motion errors.
Keywords�� airborne SAR   motion compensation   laser IMU/GPS unit     
Received 2004-05-26;
Fund:

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About author: Ҷ�ٻ�(1966-),��,���ս�����,��ʿ��, ye shaohua@sina.com.
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Ҷ�ٻ�, ������.����ʵIMU/GPS���ݽ��л���SAR�˶���������[J]  �������պ����ѧѧ��, 2005,V31(10): 1063-1065
Ye Shaohua, Zhou Yinqing.Motion compensation processing for airborne SAR data based on real sensing data of IMU/GPS[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2005,V31(10): 1063-1065
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