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| 基于ASAR双极化雷达数据的半经验模型反演土壤湿度 | |
| 引用本文： | 王军战,张友静,鲍艳松,陈晨,杨立君,王冬梅.基于ASAR双极化雷达数据的半经验模型反演土壤湿度[J].地理与地理信息科学,2009,25(2). |
| 作者姓名： | 王军战 张友静 鲍艳松 陈晨 杨立君 王冬梅 |
| 作者单位： | 1. 河海大学土木工程学院,江苏南京,210098 2. 河海大学水文水资源学院,江苏南京,210098 3. 南京信息工程大学大气物理学院,江苏南京,210044 4. 南京邮电大学计算机学院,江苏南京,210003 5. 江苏省水利科学研究院,江苏南京,200017 |
| 基金项目： | 国家自然科学基金，南京信息工程大学校科研基金 |
| 摘 要： | 基于ENVISAT ASAR-APP数据,利用AIEM(改进积分方程模型)模拟分析粗糙度、土壤水分对ASAR 7个入射角后向散射系数的影响.建立小人射角模式ASAR数据后向散射模型和组合粗糙度计算模型,提出小入射角模式下双极化ASAR数据土壤水分反演半经验模型.基于A1EM模拟数据进行试验,验证了该模型的合理性,且反演的土壤水分和实测土壤水分相关系数为O.92,均方根误差(RMSE)为3.98%. |
| 关 键 词： | 粗糙度 土壤水分 半经验模型 |
Surface Soil Moisture Estimation Based on ASAR Dual-Polarized Data Using Semi-Experience Model |
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| WANG Jun-zhan,ZHANG You-jing,BAO Yan-song,CHEN Chen,YANG Li-jun,WANG Dong-mei.Surface Soil Moisture Estimation Based on ASAR Dual-Polarized Data Using Semi-Experience Model[J].Geography and Geo-Information Science,2009,25(2). | |
| Authors: | WANG Jun-zhan ZHANG You-jing BAO Yan-song CHEN Chen YANG Li-jun WANG Dong-mei |
| Institution: | 1.School of Civil Engineering;Hohai University;Nanjing 210098;2.School of Hydrology-Water Resource and Hydraulic Engineering;3.School of Atmospheric Physics;Nanjing University of Information Science & Technology;Nanjing 210044;4.School of Computer;Nanjing University of Posts and Telecommunications;Nanjing 210003;5.Jiangsu Research Institute of Hydraulic Science;Nanjing 200017;China |
| Abstract: | Soil moisture content(SMC) is very import for agricultural,meteorological and hydrological research.In this paper,both the relationships between soil backscatter and SMC,surface roughness were analyzed using AIEM(Advance Integral Equation Model).The bare soil backscatter model and surface roughness model were built.Then,a semi-empirical soil moisture inversion model was put forward based on dual-polarized of low-angle ASAR(Advanced Synthetic Aperture Radar) data.Soil moisture content was estimated by the mo... |
| Keywords: | ASAR AIEM |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |