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Remote Sensing Technology and Application  2007, Vol. 22 Issue (2): 183-187    DOI: 10.11873/j.issn.1004-0323.2007.2.183
    
Ship Detection with Polarimetric CFAR Detector Using Envisat ASAR AP Data
TIAN Si-rui1,2,3, WANG Chao3,1, ZHANG Hong3,1
(1.State Key Laboratory of Remote Sensing,IRSA,Chinese Academy of Sciences,Beijing100101,China;
2.Graduated University of Chinese Academy Sciences,Beijing100049,China; 3.China Remote Sensing
Satellite Ground Station,Chinese Academy of Sciences,Beijing100086,China)
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Abstract  

The alternative polarization mode of Envisat ASAR can offer two registered images with different polarization during one observation, so that more information can be gained from the two images. Ships detection capability can be improved by using the AP data. Therefore, in order to detect ships with Envisat AP data, the P-CFAR detector is introduced and adopted. Firstly, GIS data are adopted to mask the land areas in the AP data. Then the P-CFAR detector is applied to the AP data. By moving the slider window,the central cell' s information is calculated and compared with a threshold. Then all the candidate targets are detected. Finally, a compound discrimination algorithm comprised by several discriminators is performed to reduce the number of false alarms. To evaluate the capability of our algorithm, it is applied to some AP data, and results show that the P-CFAR algorithm can effectively detected the ship targets, even in a clutter condition.

Key words:  Envisat AP data      P-CFAR detector      Ship detection     
Received:  04 November 2006      Published:  25 November 2011
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Cite this article: 

TIAN Si-rui, WANG Chao, ZHANG Hong. Ship Detection with Polarimetric CFAR Detector Using Envisat ASAR AP Data. Remote Sensing Technology and Application, 2007, 22(2): 183-187.

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http://www.rsta.ac.cn/EN/10.11873/j.issn.1004-0323.2007.2.183     OR     http://www.rsta.ac.cn/EN/Y2007/V22/I2/183

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