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Improved ship detection method based on span polarimetric cross entropy |
Biao YOU1,Jian YANG1( ),Chunmao Yeh2,Jianshe Song3 |
1. Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
2. Beijing Institute of Radio Measurement, Beijing 100854, China
3. Xi'an Research Institute of Hi-Technology, Xi'an 710025, China |
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Abstract The paper describes a parameter to replace the polarimetric cross entropy (PCE) for improved ship detection. The method calculates the similarity parameters between the target and three canonical scattering mechanisms. The different scattering mechanisms between the target and cluster are analyzed based on the similarity parameter. Then, the PCE is redefined based on the similarity parameter. The span polarimetric cross entropy (SPCE) is calculated to describe the span and polarimetric difference between the target and a cluster. Finally, a Parzen window is used to estimate the cluster distribution. The effectiveness of this parameter is demonstrated using the Radarsat-2 data for CFAR ship detection.
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| Keywords
synthetic aperture radar
polarization
detection
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Issue Date: 15 April 2014
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2014,
Vol. 54
