An Improved Two-Scale Model for Electromagnetic Backscattering From Sea Surface
An Improved Two-Scale Model for Electromagnetic Backscattering From Sea Surface
复制标题
海面电磁后向散射的改进二尺度模型
DOI：
10.1109/lgrs.2019.2940036
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发表时间：
2020-06
影响因子：
4.8
通讯作者：
Zaiping Nie
中科院分区：
文献类型：
--
作者：
Dongfang Li;Zhiqin Zhao;Conghui Qi;Yuan Huang;Yanwen Zhao;Zaiping Nie
基于复合粗糙面和随机多尺度模型，提出了一种改进的双尺度模型。与传统的TSM方法不同，该方法采用积分方程法（IEM）代替小扰动法（SPM）计算小尺度粗糙度的贡献。模型中仍然采用基尔霍夫近似（KA）来计算大尺度粗糙度的贡献。由于IEM比SPM具有更广泛的应用范围，因此与经典TSM相比，该模型在海面粗糙度方面具有更高的精度和更广泛的应用范围。通常，经典的TSM对截止波数很敏感。该模型采用自适应截止波数代替经典TSM中的截止波数。通过与多层快速多极子算法（MLFMA）的仿真结果和实测结果的比较，证明了该模型的有效性。分析了不同频率下的粗糙度。
Based on composite rough surface and stochastic multiscale models, an improved two-scale model (TSM) is proposed. Different from the classical TSM, the proposed method adopts the integral equation method (IEM) to replace the small perturbation method (SPM) for calculating the contribution from small-scale roughness. Kirchhoff approximation (KA) is still kept in the model to calculate the contribution from large-scale roughness. Because the IEM has wider application range than the SPM, the proposed model exhibits a higher accuracy and has a wider application range in terms of sea surface roughness compared with the classical TSM. Usually, the classical TSM is sensitive to the cutoff wavenumber. The proposed model adopts an adaptive cutoff wavenumber instead of choosing a cutoff wavenumber in the classical TSM. The effectiveness of the proposed model is demonstrated through comparisons with the simulation results of multilevel fast multipole algorithm (MLFMA) and the measured results. Different roughness at different frequencies is analyzed as well.
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影响因子：
3.4
作者：
J. Robertson
通讯作者：
J. Robertson
影响因子：
3.6
作者：
Elfouhaily, T;Chapron, B;Vandemark, D
通讯作者：
Vandemark, D
DOI：
10.1017/cbo9781139207249.009
发表时间：
2012
期刊：
--
影响因子：
--
作者：
W. Marsden
通讯作者：
W. Marsden
影响因子：
1.3
作者：
F. Arıkan;N. Vural
通讯作者：
F. Arıkan;N. Vural
影响因子：
4.8
作者：
Soriano, Gabriel;Guerin, Charles-Antoine
通讯作者：
Guerin, Charles-Antoine