| 基于Gram-Charlier分布的海面镜面散射模型 |
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| 引用本文： | 王珂,洪峻,明峰,丁岩.基于Gram-Charlier分布的海面镜面散射模型[J].中国科学院研究生院学报,2010,27(5):645-650. |
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| 作者姓名： | 王珂 洪峻 明峰 丁岩 |
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| 作者单位： | 1. 中国科学院空间信息处理与应用系统技术重点实验室,北京100080;中国科学院电子学研究所,北京100080;中国科学院电子学研究所,北京100080
2. 中国科学院空间信息处理与应用系统技术重点实验室,北京100080;中国科学院电子学研究所,北京100080 |
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| 基金项目： | 国家自然科学基金重大项目(60890071)资助 |
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| 摘 要： | 根据海面镜面散射理论和海面斜率分布理论,将海面斜率的Gram-Charlier分布应用于海面镜面散射建模,建立了以海面上10m高度风速为基准的、基于Gram-Charlier分布的海面镜面散射模型的雷达后向散射截面的计算方法.通过与实测数据的比较,验证了基于Gram-Charlier分布的海面镜面散射模型的正确性和适用性.通过仿真研究,系统总结了在不同风速、风向、极化、波段、入射角、方位向等条件下海面镜面散射的变化规律,对实际应用具有指导作用.
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| 关 键 词： | 海面 镜面散射 Gram-Charlier分布 模型研究 雷达遥感 |
| 收稿时间： | 2009-12-23 |
| 修稿时间： | 2010-02-09 |
Ocean surface specular-point scattering model based on the Gram-Charlier distribution |
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| WANG Ke,HONG Jun,MING Feng,DING Yan.Ocean surface specular-point scattering model based on the Gram-Charlier distribution[J].Journal of the Graduate School of the Chinese Academy of Sciences,2010,27(5):645-650. |
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| Authors: | WANG Ke HONG Jun MING Feng DING Yan |
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| Institution: | 1. Key Laboratory of Spatial Information Processing and Application System Technology, Chinese Academy of Sciences, Beijing 100080, China;
2. Institute of Electronics, Chinese Academy of Sciences, Beijing 100080, China;
3. Graduate University of the Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | On the basis of the theories of the ocean surface specular-point scattering and slopes distribution and by applying the Gram-Charlier distribution of ocean surface slopes to make a model for the ocean surface specular-point scattering and taking wind speed at 10m above ocean surface as basis, we establish a calculation method for the radar backscattering cross-section of the ocean surface specular-point scattering model based on the Gram-Charlier distribution. By comparing with measured data, we verify accuracy and applicability of the ocean surface specular-point scattering model based on the Gram-Charlier distribution. By simulation study, we summarize the variety regulations of the ocean surface specular-point scattering systematically under different conditions that include wind speed, wind direction, polarization, wave band, angle of incidence, azimuth and so on, and have function of guiding practical application. |
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| Keywords: | ocean surface specular-point scattering the Gram-Charlier distribution model study radar remote sensing |
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