Deorientation theory of polarimetric scattering targets and application to terrain surface classification
Deorientation theory of polarimetric scattering targets and application to terrain surface classification
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DOI：
10.1109/tgrs.2005.855064
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发表时间：
2005-09
期刊：
影响因子：
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通讯作者：
F. Xu;Yaqiu Jin
中科院分区：
文献类型：
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作者：
F. Xu;Yaqiu Jin
提出了偏振散射目标的去定向理论。使用目标散射矢量的变换，将目标方向转变为某个固定状态，并且变换后的散射矢量的偏振散射显示了目标的一般特征的突出。一组新的参数 u、v、w、/spl psi/ 是根据目标散射矢量的定向方向定义的。非球形粒子极化散射的数值模拟说明了参数u、v、w、/spl psi/和熵H的含义。提出了一种地形表面无监督分类方案，该方案利用u、v、H集合对地形表面进行分类，并根据解定向角/spl psi/分析每一类的方向分布。作为示例，中国广东惠阳地区的 SIR-C 偏振图像被分为八类，加拿大北方地区的 AirSAR 偏振图像使用我们的去方向方法和四个参数 u、v、/spl psi/ 和 H 进行方向分析。
Deorientation theory of polarimetric scattering targets is presented. Using a transformation of the target scattering vector, the target orientation is turned to a certain fixed state and polarimetric scattering of the transformed scattering vector shows the prominence of the generic characteristics of the target. A new set of parameters u, v, w, /spl psi/ is defined based on a deorientation of the target scattering vector. Numerical simulation of polarimetric scattering of nonspherical particles illustrates the meanings of the parameters u, v, w, /spl psi/ and the entropy H. An unsupervised classification scheme of the terrain surfaces is developed, which classifies the terrain surfaces using the set of u., v, H, and analyzes the orientation distribution of each class based on deorientation angle /spl psi/. As examples, a SIR-C polarimetric image over China's Guangdong Hui-Yang district is classified into eight classes and a AirSAR polarimetric image over Canada's Boreal district is orientation-analyzed using our approach of deorientation and four parameters u, v, /spl psi/, and H.