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Proceedings Paper

Weak target detection based on EMD and Hurst exponent
Author(s): Zhi-jing Li; Yong-feng Zhu; Qiang Fu
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Paper Abstract

Sea-surface weak target detection based on fractal characteristics has drawn intensive attentions in radar community recent years. However, the fractal differences between target and sea clutter are not probably significant due to the fact that target echo has been corrupted by clutter. The time-frequency distribution generated by Hilbert-Huang transform (HHT) indicates that the spectrum of target echo is mainly distributed near zero frequency, which is different from the spectrum of sea clutter. In order to enhance the difference of fractal characteristics between target and clutter, this paper applies Empirical Mode Decomposition (EMD), the first procedure of HHT, to extract the lower frequency components of radar raw echo. Then, Hurst exponent is used to construct the fractal detector. Simulation results using real data show that the performance of this new algorithm is better than the raw data-based Hurst-exponent method and the EMD-based box-dimension method.

Paper Details

Date Published: 29 August 2016
PDF: 7 pages
Proc. SPIE 10033, Eighth International Conference on Digital Image Processing (ICDIP 2016), 100330P (29 August 2016); doi: 10.1117/12.2245009
Show Author Affiliations
Zhi-jing Li, National Univ. of Defense Technology (China)
Yong-feng Zhu, National Univ. of Defense Technology (China)
Qiang Fu, National Univ. of Defense Technology (China)

Published in SPIE Proceedings Vol. 10033:
Eighth International Conference on Digital Image Processing (ICDIP 2016)
Charles M. Falco; Xudong Jiang, Editor(s)

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