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Interferometric 3D imaging for space rotating targets in wideband radar
Received date: 2016-05-04
Revised date: 2016-11-04
Online published: 2016-11-15
Supported by
National Natural Science Foundation of China (61571475, 61471386); Science Foundation for Post Doctorate of China (2015M570815)
3D imaging for space targets can provide great support for feature extraction, and target categorization and recognition. Based on three L-shaped antenna interferometric imaging principle, an interferometric method for 3D imaging of space rotating targets in wideband radar is proposed. The imaging features of space rotating targets on range-slow-time plane is analyzed when radar transmits linear frequency modulation (LFM) signals. An interferometric-processing based 3D imaging model for space rotating targets is then established. Considering the echoes of different scatters will overlap on range-slow-time plane in the model proposed, some specific issues such as echo curve separation, overlapped point disposition and the effect of high resolution range profile sidelobe on imaging are discussed, and the corresponding solutions are put forward. Generally, the method has the advantage of obtaining the real 3D position of target scatters over monostatic radar-based imaging methods, thus avoiding the difficulty in joint processing multistatic radar-based imaging methods. Simulation results verify the effectiveness of the proposed 3D imaging method.
SUN Yuxue , LUO Ying , ZHANG Qun , LIN Yongzhao , CHEN Chunhui . Interferometric 3D imaging for space rotating targets in wideband radar[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2017 , 38(4) : 320399 -320399 . DOI: 10.7527/S1000-6893.2016.0286
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