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遥感技术与应用  2012, Vol. 27 Issue (6): 822-828    DOI: 10.11873/j.issn.1004-0323.2012.6.822
综述     
吉林西部盐碱地特性微波双频差分无损探测
李洋洋1,2,李晓洁1,赵凯1,郑兴明1
(1.中国科学院东北地理与农业生态研究所,吉林 长春 30102;2.中国科学院大学,北京 00049)
Non-destructive Detection of Saline-alkali Soil based on Differential of Microwave Dual-band in Western Jilin Province
Li Yangyang,Li Xiaojie,Zhao Kai,Zheng Xingming
(1.Northeast Institute of Geography and Agricultural Ecology,Chinese Academy of Sciences,
Changchun 130102,China;2.University of Chinese Academy of Sciences,Beijing 100049,China)
 全文: PDF(2158 KB)  
摘要:

针对吉林西部盐碱地特性(内地苏打盐类型),应用车载双频段被动微波遥感系统,对不同盐碱状态的4个裸盐碱区进行双极化多角度微波辐射无损探测。基于多角度双频率双极化的观测数据优势,选择逼近式迭代算法来反演其介电常数虚部,Dobson模型反演介电常数实部。在此基础上,应用双频差分法研究了该区域盐碱地介电特性与含水量、含盐量的关系。双频差分结果表明:实部双频差分与盐碱土含水量呈线性关系,相关系数为0.9996;虚部双频差分与含盐量呈线性关系,相关系数为0.9977。这为应用被动微波遥感定量反演盐碱地特性(含水量、含盐量)奠定了理论基础。

关键词: 微波双频差分无损探测介电常数盐碱地含水量含盐量    
Abstract:

According to characteristics of soil salinization in the western Jilin province,four regions are selected as study areas and these regions are non-destructive detected by dual-band board radiometer with multi-angle and dual-polarization mode.Based on the field data,Levernberg-Marquardt Algorithm was selected to calculate the imaginary part of soil permittivityand Dobson model as the real part of soil permittivity.Then,the dual-band different method was used to study the relationship of soil permittivity and salinity,water content.The difference of the real part of soil permittivity between two frequency (band) is well linear relationship with soil water content,while has the difference of the imaginary part with salinity.This result is significant on the inversion of soil salinity characteristics,and laid a theoretical foundation for soil salinity quantitative inversion from microwave remote sensing image.

Key words:      Microwave dual-band difference    Non-destructive detection    Permittivity    Salini- alkali Soil    Water content;Salinity content
收稿日期: 2011-12-13 出版日期: 2013-06-25
:  TP 79  
基金资助:

中国科学院知识创新工程重要方向项目“微波遥感土壤湿度机理研究”(KZCX2-W-40)。

作者简介: 李洋洋(1987-),女,山东德州人,博士研究生,主要从事吉林西部盐碱土微波特性研究。Email:liyangyang19872005@163.com。
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引用本文:

李洋洋,李晓洁,赵凯,郑兴明. 吉林西部盐碱地特性微波双频差分无损探测[J]. 遥感技术与应用, 2012, 27(6): 822-828.

Li Yangyang,Li Xiaojie,Zhao Kai,Zheng Xingming . Non-destructive Detection of Saline-alkali Soil based on Differential of Microwave Dual-band in Western Jilin Province. Remote Sensing Technology and Application, 2012, 27(6): 822-828.

链接本文:

http://www.rsta.ac.cn/CN/10.11873/j.issn.1004-0323.2012.6.822        http://www.rsta.ac.cn/CN/Y2012/V27/I6/822

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