Ship Detection Based on Compound Distribution with Synthetic Aperture Radar Images
Considering the variability of Synthetic Aperture Radar (SAR) imaging (different sensor, resolution) and complex condition of sea surface, the traditional single statistical model may be no longer a good choice to fit the distribution of actual sea clutter in SAR image. Based on the characteristic of Gamma distribution which is suitable to model uniform area, and G0 distribution which is adaptive to the general homogeneous and heterogeneous area, this paper established a compound distribution of G0 and Gamma model to fit the characteristics of various types of sea conditions, and use the moment estimation to improve the computational efficiency as well. Meanwhile, the algorithm combines the Constant False Alarm Rate (CFAR) detection based on dichotomy method in order to figure out the difficulties in solving the analytical expression of compound distribution. TerraSAR-X and ERS-2 images were adopted for investigating the algorithm. Experiment results illustrate that the method can achieve good performance.
constant false alarm rate (CFAR) compound distribution ship detection synthetic aperture radar image (SAR)
Fan Wu Congshan Gao Chao Wang Hong Zhang Bo Zhang
Center for Earth Observation and Digital Earth, Chinese Academy of Sciences, Beijing, China, 100086
国际会议
2010 IEEE 10th International Conference on Signal Processing(第十届信号处理国际会议 ICSP 2010)
北京
英文
841-844
2010-08-24（万方平台首次上网日期，不代表论文的发表时间）