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�������պ����ѧѧ�� 2012, Vol. Issue (2) :143-148    DOI:
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Security surveillance of low-altitude airspace with primary radar
Chen Weishi, Ning Huansheng*
School of Electronics and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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ժҪ ������һ�ֵͳɱ��ĵͿտ����״����ʵ��ϵͳ,�������һ�ֻ����״�ƽ��λ��ָʾ(PPI,Plane Position Indicator)ͼ���Ŀ����������㷨,�����Ӳ����ƺ�Ŀ��״̬����������ؼ�����.����������ֵ��״�PPIͼ��,��Ȼ���д����ı�����Ե�Ӳ�,���㷨������������Խ����Ӳ�����,�����ý���ʽ��ģ��(IMM,Interactive Multiple Models)������Ŀ������١����١����١�ת��Ȼ����˶����и���.��ϸ�����˷������ݵĸ���Ч��,���������㷨Ӧ��������ʵ��PPIͼ��,ʵ����˵������Ч��.
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Abstract�� An affordable low-altitude airspace experimental radar surveillance system was introduced and the target detection and tracking scheme based on plane position indicator (PPI) radar images was proposed, where clutter suppression and target state estimation are two critical techniques. After background subtraction of PPI radar images, there are still much clutter distributed around the original background objects, so its spatial characteristic was utilized for clutter suppression, and then the interactive multiple models (IMM) method was adopted for tracking of target maneuvering motions with uniform speed, acceleration, deceleration and turning. The performance of the tracking algorithm was deeply investigated against simulated data. Results of the application of overall scheme to two sets of live PPI images were also provided showing the effectiveness of the proposed approach.
Keywords�� low-altitude airspace   radar   detection   track   interactive multiple models     
Received 2010-09-30;
Fund:������Ȼ��ѧ����������Ŀ(61001134, 61079019); ��47���й���ʿ���ѧ����������Ŀ;���ҿƼ��ش�ר��������Ŀ
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��Ψʵ, ������.����һ���״�ʵ�ֵͿտ���İ�ȫ����[J]  �������պ����ѧѧ��, 2012,V(2): 143-148
Chen Weishi, Ning Huansheng.Security surveillance of low-altitude airspace with primary radar[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2012,V(2): 143-148
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