Local incidence angle referenced classification on polarimetric synthetic aperture radar images in mountain glacier areas
Local incidence angle referenced classification on polarimetric synthetic aperture radar images in mountain glacier areas
复制标题
山地冰川地区偏振合成孔径雷达图像局部入射角参考分类
DOI:
10.1117/1.jrs.10.025015
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发表时间:
2016-04
影响因子:
1.7
通讯作者:
Tian Bang-sen
中科院分区:
文献类型:
--
作者:
Huang Lei;Li Zhen;Tian Bang-sen
Abstract. The incidence angle is a crucial parameter for synthetic aperture radar (SAR). The local incidence angle differs greatly in mountainous areas, and it may lead to quite different backscatter properties for the same ground targets for different incidence angles. As a result, it has to be taken into consideration in image classification. This work demonstrates the importance of the local incidence angle and the necessity of considering this angle in SAR image classification in mountainous areas. A local incidence angle referenced method based on support vector machines is developed to perform classification. In this method, the datasets are divided into different zones according to local incidence angle, and the training and predicting are performed within these zones to eliminate the influence of the local incidence angles. The experiments are performed around the Dongkemadi Glacier in the central Qinghai-Tibetan plateau using two RADARSAT-2 polarimetric SAR images. This paper concentrates on the effect of the local incidence angles in SAR image classification. Compared to the method using only backscatter coefficients, the proposed method improves the overall classification accuracy by 6 to 8%. More important, it is verified that this method is more helpful for the ground cover types where the terrain changes sharply.
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影响因子:
13.5
作者:
Xiaobing Zhou;H. Xie;J. Hendrickx
通讯作者:
Xiaobing Zhou;H. Xie;J. Hendrickx
影响因子:
13.5
作者:
A. Loew;W. Mauser
通讯作者:
A. Loew;W. Mauser
影响因子:
1.3
作者:
Rodriguez, E;Morris, CS;Belz, JE
通讯作者:
Belz, JE
影响因子:
3.4
作者:
M. König;J. Winther;N. Knudsen;T. Guneriussen
通讯作者:
M. König;J. Winther;N. Knudsen;T. Guneriussen
影响因子:
--
作者:
Cherkassky, V
通讯作者:
Cherkassky, V