| 寒区植被对冻土微波辐射影响的研究 |
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| 引用本文： | 郑越,张立新,邢伟坡,张钟军.寒区植被对冻土微波辐射影响的研究[J].冰川冻土,2009,31(2):214-219. |
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| 作者姓名： | 郑越 张立新 邢伟坡 张钟军 |
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| 作者单位： | 北京师范大学,遥感与GIS研究巾心,北京,100875;北京师范大学,地理学与遥感科学学院,北京,100875;北京师范大学,遥感与GIS研究巾心,北京,100875;北京师范大学,信息科学与技术学院,北京,100875 |
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| 基金项目： | 国家重点基础研究发展规划(973计划)，中国科学院西部行动计划(二期)项目，高等学校博上学科点专项科研基金 |
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| 摘 要： | 理论和实验表明,微波辐射可以用来研究冻土的特性.但当冻土的上层被植被层覆盖时,植被吸收、发射并散射微波信号,冻土的微波辐射特征就会被改变.所以,研究植被层对冻土微波辐射特征的影响,对于准确获取下层冻土的微波辐射特性及冻土的变化监测极为重要.介绍了一种基于光线跟踪原理和耦合矩阵算法的微波辐射模型,用来计算植被层的发射率,可以计算得到视场内来自不同观测角度的整体发射率,以及V和H极化的相位差.根据车载双极化微波辐射计在C,X,K,Ka等4个波段的实测数据与模拟结果的比较,分别计算出来自植被层和冻土层的辐射,从而研究寒区植被对冻土的微波辐射影响.
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| 关 键 词： | 寒区 冻土 植被 耦合矩阵 微波辐射 |
Study of the Effects of Vegetation on Microwave Radiation of Frozen Soil in Cold Regions |
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| ZHENG Yue,ZHANG Li-xin,XING Wei-po,ZHANG Zhong-jun.Study of the Effects of Vegetation on Microwave Radiation of Frozen Soil in Cold Regions[J].Journal of Glaciology and Geocryology,2009,31(2):214-219. |
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| Authors: | ZHENG Yue ZHANG Li-xin XING Wei-po ZHANG Zhong-jun |
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| Institution: | 1.Center of Remote Sensing and GIS;Beijing Normal University;Beijing 100875;China;2.School of Geography and RemoteSensing Science;3.College of Information Science and Technology;China |
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| Abstract: | Study of frozen soil has important significance.Theory and experiment indicate that microwave radiation can be used to study frozen soil characteristics.However,the microwave radiation of frozen soil changes with vegetation coverage.Vegetation in frozen environment absorbs,emits and scatters microwave radiation.Therefore,it is important to study microwave radiation effects of vegetation on frozen soil in cold regions,and this kind of study plays an important role in obtaining frozen soil microwave radiation... |
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| Keywords: | cold regions frozen soil vegetation Matrix-Doubling microwave radiation |
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