| 基于TIMESAT的3种时序NDVI拟合方法比较研究——以藏北草地为例 |
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| 引用本文： | 宋春桥,柯灵红,游松财,刘高焕,钟新科.基于TIMESAT的3种时序NDVI拟合方法比较研究——以藏北草地为例[J].遥感技术与应用,2011,26(2):147-155. |
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| 作者姓名： | 宋春桥 柯灵红 游松财 刘高焕 钟新科 |
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| 作者单位： | (1.中国科学院地理科学与资源研究所,资源与环境信息系统国家重点实验室,北京100101；;
2.中国科学院研究生院,北京100049；3.中国农业科学院农业环境与可持续发展研究所,北京100081) |
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| 基金项目： | 藏北高原地区土壤水分与土壤温度时空变化模拟分析 |
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| 摘 要： | 以藏北地区2007～2009年MODIS 16 d合成的NDVI时间序列为例,介绍了基于TIMESAT 2.3软件的3种主要拟合算法--非对称高斯函数(AG)拟合、双Logistic曲线(D-L)拟合和Savitzky-Golay(S-G)滤波法的基本原理和实现流程;重点从拟合重建NDVI时间序列对原始NDVI值上包络...
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| 关 键 词： | MODIS NDVI TIMESAT 拟合 噪声去除 时间序列数据 藏北 |
Comparison of Three NDVI Time-series Fitting Methods based on TIMESAT——Taking the Grassland in Northern Tibet as Case |
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| SONG Chun-qiao,KE Ling-hong,YOU Song-cai,LIU Gao-huan,ZHONG Xin-ke.Comparison of Three NDVI Time-series Fitting Methods based on TIMESAT——Taking the Grassland in Northern Tibet as Case[J].Remote Sensing Technology and Application,2011,26(2):147-155. |
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| Authors: | SONG Chun-qiao KE Ling-hong YOU Song-cai LIU Gao-huan ZHONG Xin-ke |
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| Affiliation: | (1.Institute of Geographic Sciences and Natural Resources Research,State Key Lab of Resources and Environmental Information System,Chinese Academy of Sciences,Beijing 100101,China;;
2.Graduate University of Chinese Academy of Sciences,Beijing 100049,China;;
3.Institute of Environment and Sustainable Development in Agriculture; Chinese Academy of Agricultural Sciences,Beijing 100081,China) |
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| Abstract: | MODIS 16 days composited NDVI time-series of 2007-2009 in northern Tibet are taken as study case to compare the characters of three principal fitting methods,that is the double Logistic function fitting(D-L),asymmetric Guassian function fitting(AG),and Savitzky-Golay filtering(S-G) methods.To begin first,the basic principles and implementation process of the three algorithms are introducted based the TIMESAT 2.3 program.Then,the results of NDVI time-series fitting based on the three methods are emphatically... |
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| Keywords: | MODIS NDVI TIMESAT |
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