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�������պ����ѧѧ�� 2008, Vol. 34 Issue (09) :1049-1052    DOI:
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Simulation on bistatic RCS measurement method in anechoic chamber
Li Zhiping, He Guoyu*
School of Electronics and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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ժҪ ��������΢��������ʹ�ý�������ƽ�����ɨ�����˫վRCS(Radar Cross Section)�ķ���,����������Ϲ�ʽ��ƽ�沨�ۺϺ͵�Чԭ�������任��Զ��.�����˲�������Ч����ʹ������Բ������ܵ�Ӱ��.�벨���IJ��������������Ҫ��,Ƿ��������ʴ��Ч����Χ.�Ǽ��ۺϿھ��ĵ�ЧͶӰ,��������Ч����Ĺ��ƹ�ʽ.פ�෨�����˽�Զ���任�Խ����Ľ��ƾֲ�������.����ʹ�ô�����������ɨ��ض����,��߲�������.���,ͨ����ֵ������֤�˲������������ܷ�������Ч��.
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Abstract�� An method was presented to measure bistatic RCS in anechoic chamber. The target was illuminated by compact antenna test range (CATR), and the scattered field was probed in near-field. The transformation from near-field to far-field (N2F) was analyzed by antennas coupling equation, plane wave synthesis and equivalence theorem. Sampling rate, maximum angle and taper function in N2F were formulated to analyze the measurement-s performance. The sampling interval needs to be half wavelength, and undersample will worsen the maximum angle. The maximum angle-s estimation was perfected using the synthetic aperture-s projection. Far-field was determined by localized near-field approximatively, which can be concluded using stationary phase method. A taper function was applied to the near-field data that reduces the error of the scanning truncation. The method was validated through numerical example finally.
Keywords�� near-field   radar cross section (RCS)   anechoic chamber     
Received 2007-08-30;
About author: ��־ƽ(1979-), ��, ɽ��˷����,��ʿ��,lizhipingbuaa@gmail.com.
��־ƽ,�ι��.΢��������˫վRCS���������ķ���[J]  �������պ����ѧѧ��, 2008,V34(09): 1049-1052
Li Zhiping, He Guoyu.Simulation on bistatic RCS measurement method in anechoic chamber[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2008,V34(09): 1049-1052
http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2008/V34/I09/1049
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