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Proceedings Paper

Space target velocity compensation based on fractional autocorrelation and PSO optimization
Author(s): Xiaohong Lin; Zhuang Wang; Xiaoyong Du
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Paper Abstract

Distortion compensation of High-resolution range profile plays an important role in ISAR imaging of high-speed space target. Since the baseband echo of such target is a multi-component linear frequency modulated(LFM) signal with identical chirp rates. Since the peaks of its ambiguity function lie on a set of parallel lines, whose slope is relative to the chirp rate, an estimator based on the fractional autocorrelation is provided to estimate the target's radial velocity. Furthermore, the particle swarm optimization(PSO) algorithm is also applied to speed up the progress of parameter estimation,. Finally, the velocity compensation is accomplished with the estimated velocity. Simulations show that the proposed method can compensate the range profile distortion of space target effectively.

Paper Details

Date Published: 30 October 2009
PDF: 6 pages
Proc. SPIE 7494, MIPPR 2009: Multispectral Image Acquisition and Processing, 74940D (30 October 2009); doi: 10.1117/12.832922
Show Author Affiliations
Xiaohong Lin, National Univ. of Defense Technology (China)
Zhuang Wang, National Univ. of Defense Technology (China)
Xiaoyong Du, National Univ. of Defense Technology (China)

Published in SPIE Proceedings Vol. 7494:
MIPPR 2009: Multispectral Image Acquisition and Processing
Faxiong Zhang; Faxiong Zhang, Editor(s)

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