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Journal of Applied Remote Sensing

Interferometric inverse synthetic aperture radar imaging for space targets based on wideband direct sampling using two antennas
Author(s): Biao Tian; Yang Liu; Shiyou Xu; Zengping Chen
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Paper 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.

Paper Details

Date Published: 16 June 2014
PDF: 13 pages
J. Appl. Remote Sens. 8(1) 083599 doi: 10.1117/1.JRS.8.083599
Published in: Journal of Applied Remote Sensing Volume 8, Issue 1
Show Author Affiliations
Biao Tian, National Univ. of Defense Technology (China)
Yang Liu, National Univ. of Defense Technology (China)
Shiyou Xu, National Univ. of Defense Technology (China)
Zengping Chen, National Univ. of Defense Technology (China)


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