| 講演名 | 2012-08-24 Polarimetric Model-Based Decomposition with Generalized Scattering Models , |
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| 抄録(英) | Orientation angle compensation has been incorporated into model-based decomposition to cure the overestimation of volume scattering contribution, by rotating the coherency matrix to minimize the cross-polarization term. However, this processing cannot always guarantee to rotate the double- and odd-bounce scattering components back to zero orientation angle cases and with zero cross-polarization power. Therefore, built-up patches with large orientation angles may still suffer from the scattering mechanism ambiguity. In this paper, general double- and odd-bounce scattering models are proposed to fit for the cross-polarization and off-diagonal terms, by separating their independent orientation angles. The general decomposition framework is proposed and utilizes the complete information. The residual minimization criterion is used for model inversion. The optimal solutions are obtained using the nonlinear least square optimization technique. The manual interference and negative power issues are well avoided during the model inversion. Its efficiency and advantages are demonstrated and evaluated with airborne X-band Pi-SAR polarimetric SAR datasets. Comparison studies are also carried out. Further improved decomposition performance is achieved by the proposed method, especially in oriented built-up areas. |
| キーワード(和) | |
| キーワード(英) | Synthetic aperture radar (SAR) / polarimetry / model-based decomposition / general model / polarization orientation angle / deorientation |
| 資料番号 | SANE2012-51 |
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| 研究会情報 | |
| 研究会 | SANE |
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| 開催期間 | 2012/8/17(から1日開催) |
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| 申込み研究会 | Space, Aeronautical and Navigational Electronics (SANE) |
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| 本文の言語 | ENG |
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| タイトル（英） | Polarimetric Model-Based Decomposition with Generalized Scattering Models |
| サブタイトル（和） | |
| キーワード(1)（和/英） | / Synthetic aperture radar (SAR) |
| 第 1 著者 氏名（和/英） | / Si-Wei Chen |
| 第 1 著者 所属（和/英） | Graduate School of Environmental Studies, Tohoku University |
| 発表年月日 | 2012-08-24 |
| 資料番号 | SANE2012-51 |
| 巻番号（vol） | vol.112 |
| 号番号（no） | 185 |
| ページ範囲 | pp.- |
| ページ数 | 6 |
| 発行日 | |