Research Papers

Interferometric inverse synthetic aperture radar imaging for space targets based on wideband direct sampling using two antennas

[+] Author Affiliations
Biao Tian

National University of Defense Technology, Science and Technology on Automatic Target Recognition Laboratory, 109#, Deya Road Changsha, Hunan 410073, China

Yang Liu

National University of Defense Technology, Science and Technology on Automatic Target Recognition Laboratory, 109#, Deya Road Changsha, Hunan 410073, China

Shiyou Xu

National University of Defense Technology, Science and Technology on Automatic Target Recognition Laboratory, 109#, Deya Road Changsha, Hunan 410073, China

Zengping Chen

National University of Defense Technology, Science and Technology on Automatic Target Recognition Laboratory, 109#, Deya Road Changsha, Hunan 410073, China

J. Appl. Remote Sens. 8(1), 083599 (Jun 16, 2014). doi:10.1117/1.JRS.8.083599
History: Received February 14, 2014; Revised May 15, 2014; Accepted May 19, 2014
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Abstract.  Interferometric inverse synthetic aperture radar (InISAR) imaging provides complementary information to monostatic inverse synthetic aperture radar (ISAR) imaging. This paper proposes a new InISAR imaging system for space targets based on wideband direct sampling using two antennas. The system is easy to realize in engineering since the motion trajectory of space targets can be known in advance, which is simpler than that of three receivers. In the preprocessing step, high speed movement compensation is carried out by designing an adaptive matched filter containing speed that is obtained from the narrow band information. Then, the coherent processing and keystone transform for ISAR imaging are adopted to reserve the phase history of each antenna. Through appropriate collocation of the system, image registration and phase unwrapping can be avoided. Considering the situation not to be satisfied, the influence of baseline variance is analyzed and compensation method is adopted. The corresponding size can be achieved by interferometric processing of the two complex ISAR images. Experimental results prove the validity of the analysis and the three-dimensional imaging algorithm.

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© 2014 Society of Photo-Optical Instrumentation Engineers

Citation

Biao Tian ; Yang Liu ; Shiyou Xu and Zengping Chen
"Interferometric inverse synthetic aperture radar imaging for space targets based on wideband direct sampling using two antennas", J. Appl. Remote Sens. 8(1), 083599 (Jun 16, 2014). ; http://dx.doi.org/10.1117/1.JRS.8.083599


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