基于Gram-Charlier分布的海面镜面散射模型

doi:10.7523/j.issn.2095-6134.2010.5.010

中国科学院大学学报 ›› 2010, Vol. 27 ›› Issue (5): 645-650.DOI: 10.7523/j.issn.2095-6134.2010.5.010

基于Gram-Charlier分布的海面镜面散射模型

王珂^1,2,3, 洪峻^1,2, 明峰^1,2, 丁岩^1,2,3

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;
2. 中国科学院电子学研究所,北京 100080;
3. 中国科学院研究生院,北京 100049

收稿日期:2009-12-23 修回日期:2010-02-09 发布日期:2010-09-15
基金资助:
国家自然科学基金重大项目(60890071)资助 

Ocean surface specular-point scattering model based on the Gram-Charlier distribution

WANG Ke^1,2,3, HONG Jun^1,2, MING Feng^1,2, DING Yan^1,2,3

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

Received:2009-12-23 Revised:2010-02-09 Published:2010-09-15

摘要/Abstract

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.

关键词: 海面, 镜面散射, Gram-Charlier分布, 模型研究, 雷达遥感

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.

Key words: ocean surface, specular-point scattering, the Gram-Charlier distribution, model study, radar remote sensing

中图分类号:

TN011

王珂, 洪峻, 明峰, 丁岩. 基于Gram-Charlier分布的海面镜面散射模型[J]. 中国科学院大学学报, 2010, 27(5): 645-650.

WANG Ke, HONG Jun, MING Feng, DING Yan. Ocean surface specular-point scattering model based on the Gram-Charlier distribution[J]. , 2010, 27(5): 645-650.

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基于Gram-Charlier分布的海面镜面散射模型

Ocean surface specular-point scattering model based on the Gram-Charlier distribution

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