An improved model-based polarimetric decomposition preserving dominant scattering characteristics
文献类型：会议论文
| 作者 | Cai, Yongjun; Zhang, Xiangkun; Jiang, Jingshan |
| 出版日期 | 2014 |
| 会议名称 | Progress in Electromagnetics Research Symposium, PIERS 2014 |
| 会议日期 | August 25, 2014 - August 28, 2014 |
| 会议地点 | Guangzhou, China |
| 页码 | 1073-1076 |
| 英文摘要 | Original three-component polarimetric decomposition always suffers from some deficiencies such as negative power and scattering mechanism ambiguity. In fact, it is probably because of the inconsistency between the assumed models and PolSAR data. In this paper, we intend to solve the scattering mechanism ambiguity in original three-component decomposition, and later we will try to find out some solutions aiming at alleviating the negative power problem. Considering that the nonnegative eigenvalue decomposition (NNED) is only applicative for the pixels that volume scattering dominates (the details will be discussed in Section 1), an improved model-based scheme is proposed, in which the decomposition will be hierarchical. If volume scattering is dominant, a revised NNED is adopted, for which the volume scattering employs the model proposed by Yamaguchi, and if volume scattering is not dominant, a revised four-component decomposition is adopted, for which the volume scattering employs the model proposed by Freeman. The entropy and alpha parameter are employed to identify the dominant scattering mechanism. Through this revision, the decomposition will be more accurate and the dominant scattering mechanism in each pixel will be preserved better. To verify and demonstrate the performance and advantages of the proposed decomposition, the L-band airborne AIRSAR San Francisco data and E-SAR Oberpfaffenhofen polarimetric data are used. Comparison studies are also carried out to show the improvements by the proposed method especially for the oriented urban areas. |
| 收录类别 | EI |
| 会议主办者 | Development and Research Academy for Global Optical Neo-technology (DRAGON); et al.; JORCEP (Sino-Swedish Joint Research Center of Photonics); South China Normal University; South China Normal University, Centre for Opt. and Electromagn. Res., South China Academy of Advanced Optoelectronics; ZJU Institute for Opto-Electronic Technology Commercialization (IOTEC) |
| 会议录 | Progress in Electromagnetics Research Symposium
 |
| 会议录出版者 | Electromagnetics Academy |
| 语种 | 英语 |
| ISSN号 | 1559-9450 |
| ISBN号 | 9781934142288 |
| 源URL | [http://ir.nssc.ac.cn/handle/122/4355]  |
| 专题 | 国家空间科学中心_空间技术部 |
| 推荐引用方式 GB/T 7714 | Cai, Yongjun,Zhang, Xiangkun,Jiang, Jingshan. An improved model-based polarimetric decomposition preserving dominant scattering characteristics[C]. 见:Progress in Electromagnetics Research Symposium, PIERS 2014. Guangzhou, China. August 25, 2014 - August 28, 2014. |
入库方式： OAI收割
来源：国家空间科学中心
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