HIGH RESOLUTION RANGE PROFILE FORMATION BASED ON LFM SIGNAL FUSION OF MULTIPLE RADARS

This paper presents a new method of High Resolution Range （HRR） profile formation based on Linear Frequency Modulation （LFM） signal fusion of multiple radars with multiple frequency bands. The principle of the multiple radars signal fusion improving the range resolution is analyzed. With the analysi...

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Bibliographic Details
Published in:Journal of electronics (China) 2007, Vol.24 (1), p.75-82
Main Authors: Wang, Cheng, Hu, Weidong, Du, Xiaoyong, Yu, Wenxian
Format: Article
Language:English
Subjects:
ISAR
多频段多雷达信号融合
线性频率调制
逆合成孔径雷达
高分辨率距离像
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Summary:This paper presents a new method of High Resolution Range （HRR） profile formation based on Linear Frequency Modulation （LFM） signal fusion of multiple radars with multiple frequency bands. The principle of the multiple radars signal fusion improving the range resolution is analyzed. With the analysis of return signals received by two radars, it is derived that the phase difference between the echoes varies almost linearly with respect to the frequency if the distance between two radars is negligible compared with the radar observation distance. To compensate the phase difference, an entropy-minimization principle based compensation algorithm is proposed. During the fusion process, the B-splines interpolation method is applied to resample the signals for Fourier transform imaging. The theoretical analysis and simulations results show the proposed method can effectively increase signal bandwidth and provide a high resolution range profile.
ISSN:0217-9822
1993-0615
DOI:10.1007/s11767-005-0103-0