Fast ISAR motion compensation using improved stage-by-stage approaching algorithm

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This paper proposes a fast inverse synthetic aperture radar (ISAR) motion compensation (MOCOM) method. The various motion compensation methods using minimum entropy algorithm such as stage-by-stage approaching (SSA) algorithm were reported recently. However, the computational efficiency and the clearance of the ISAR image were hard to achieve simultaneously. In particular, as the number of the local minima in the entropy curve increases, the processing time takes longer to find the global minimum. In this paper, we propose a new MOCOM algorithm based on an improved SSA algorithm to reduce the processing time. The proposed algorithm uses the envelope value as the fitness function instead of the entropy value, so the number of the local minima in the entropy curve is reduced. Therefore, the entropy curve becomes simple and the required number of the phase error samples is reduced. In the simulation, the processing time is improved by 88.8% than the conventional SSA algorithm. Also, in the experiment, the processing time is improved by 87.9% similar to 89.2%.
Publisher
TAYLOR & FRANCIS LTD
Issue Date
2021-08
Language
English
Article Type
Article
Citation

JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS, v.35, no.12, pp.1587 - 1600

ISSN
0920-5071
DOI
10.1080/09205071.2021.1908917
URI
http://hdl.handle.net/10203/285956
Appears in Collection
EE-Journal Papers(저널논문)
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