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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2014-03-18
A Coarse-to-Fine Approach for Ship Detection in SAR Image Based on CFAR Algorithm
By
Meng Yang,

    Prof. Meng Yang

    School of Communication Engineering

    Hangzhou Dianzi University

    China

    Homepage

Gong Zhang,

    Dr. Gong Zhang

    College of Information Science and Technology

    Nanjing University of Aeronautics and Astronautics

    China

    Homepage

Chunsheng Guo,

    Dr. Chunsheng Guo

    College of Communication Engineering

    Hangzhou Dianzi University

    China

    Homepage

Minhong Sun

    Dr. Minhong Sun

    College of Communication Engineering

    Hangzhou Dianzi University

    China

    Homepage

Progress In Electromagnetics Research M, Vol. 35, 105-111, 2014
doi:10.2528/PIERM14012201 | Google Scholar

Abstract
Among ship detection methods for SAR image, constant false alarm rate (CFAR) is the most important one. However, several factors, such as detector parameter and distribution of ocean clutter, affect the performance of CFAR detection. This paper proposes a novel hierarchical complete and operational ship detection approach based on detector parameter estimation and clutter pixel replacement, which is considered a sequential coarse-to-fine elimination process of false alarms. First, a simple barycentric algorithm is adopted to estimate target-window size, and a morphology method is used to estimate false alarm rate for CFAR detector. Second, a clutter pixel replacement approach based on the statistical features of sea clutter is presented to obtain statistically independent, stationary, and Weibull distributed random data for CFAR detector to remove all false alarms. Experimental results of the detection methods on a SAR image dataset show that the proposed approach is effective in reducing false alarms and obtains a satisfactory ship detection performance.
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Citation
Meng Yang, Gong Zhang, Chunsheng Guo, and Minhong Sun, "A Coarse-to-Fine Approach for Ship Detection in SAR Image Based on CFAR Algorithm," Progress In Electromagnetics Research M, Vol. 35, 105-111, 2014.
doi:10.2528/PIERM14012201
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