Small target detection in sea clutter background based on Tsallis entropy of Doppler spectrum

被引：0
|
作者：
Chen S. [1 ]
Luo F. [1 ]
Hu C. [2 ]
Nie X. [1 ]
机构：
[1] National Laboratory of Radar Signal Processing, Xidian University, Xi’an
[2] Southwest China Institute of Electronic Technology, Chengdu
来源：
Journal of Radars | 2019年 / 8卷 / 03期
关键词：
Doppler spectrum; Multifractality; Sea clutter; Target detection; Tsallis entropy;
D O I：
10.12000/JR19012
中图分类号：
学科分类号：
摘要：
According to the different concentration levels of Doppler spectrum between sea clutter and target, small target in sea clutter background can be detected using Shannon entropy. However, Shannon entropy is merely a special case of Tsallis entropy and cannot reflect the multifractality of sea clutter. In this paper, the relation between Tsallis entropy and the generalized fractal dimension is first presented, and then the Doppler spectrum’s concentrative level and multifractality of sea clutter are combined; finally an algorithm for detecting small target in sea clutter background based on Tsallis entropy of Doppler spectrum rather than of Shannon entropy is proposed. By comparison via IPIX dataset, the detection’s performance of Tsallis entropy is better than that of Shannon entropy and Hurst exponent as per short observations. © 2019 Institute of Electronics Chinese Academy of Sciences. All rights reserved.
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页码：344 / 354
页数：10
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