| 基于全极化SAR影像的舰船目标检测算法研究 |
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| 引用本文： | 张兢,周玉坤.基于全极化SAR影像的舰船目标检测算法研究[J].测绘信息与工程,2012,37(6):33-36. |
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| 作者姓名： | 张兢 周玉坤 |
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| 作者单位： | 1. 91635部队,北京市,102249
2. 91053部队,北京市,100070 |
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| 摘 要： | 介绍了基于星载极化SAR影像的舰船目标检测的处理流程,针对基于不同杂波模型的CFAR检测法和基于相干信息的2L-IHP检测法,分析实现了瑞利分布、Gauss分布、韦布尔分布、对数正态分布,四种常用杂波分布模型的CA-CFAR检测法,通过实验检测海面舰船目标,发现这四种杂波模型针对不同海况有着不同的适应性,其检测效果也大不相同。而2L-IHP检测法不依赖于海杂波模型,通过子孔径相干提高目标和背景之间的对比度,实验结果表明,该方法能大幅提高海面舰船目标的检测概率。
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| 关 键 词： | 极化合成孔径雷达 舰船 目标检测 恒虚警率 2L-IHP |
Vessel Detection Algorithm Based on Quad Polarimetric SAR Image |
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| ZHANG Jing,ZHOU Yukun.Vessel Detection Algorithm Based on Quad Polarimetric SAR Image[J].Journal of Geomatics,2012,37(6):33-36. |
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| Authors: | ZHANG Jing ZHOU Yukun |
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| Institution: | 1 91635 Troop,Beijing 102249,China;2 91053 Troop,Beijing 100070,China) |
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| Abstract: | The paperbriefly introduces the process flow for ship detection using space-borne Polarimetric SAR image.Two algorithms,which are CFAR based on different sea clutter models and 2L-IHP,are used to detect ship targets.Experiments are done using CA-CFAR detection methods based on four sea clutter models ： Rayleigh distribution,Gaussian distribution,Weibull and log-Gaussian distribution.The results show that clutter models have different suitabilities under various sea conditions,and the detection results are different.However,2L-IHP does not depend on sea clutter model,and could improve the contrast between ship and background by sub-look coherence.Experiment results indicate that the ship detection probability was much improved l. |
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| Keywords: | Polarmetric Synthetic Aperture Radar(PolSAR) target detection CFAR 2L-IHP |
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