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| 基于半方差函数的STARFM改进模型 | |
| 引用本文： | 王昆,张丽,王志勇,田丰.基于半方差函数的STARFM改进模型[J].测绘科学,2013,38(3):140-142,92. |
| 作者姓名： | 王昆 张丽 王志勇 田丰 |
| 作者单位： | 1. 山东科技大学测绘学院,山东青岛266510;中国科学院对地观测与数字地球科学中心,北京100086 2. 中国科学院对地观测与数字地球科学中心,北京,100086 3. 山东科技大学测绘学院,山东青岛,266510 4. 中国矿业大学环境与测绘学院,江苏徐州,221116 |
| 基金项目： | "基于全球碳循环模拟下的北半球温带草原生态系统功能评价研究"，863重大项目"星机地立体组网协同观测关键技术" |
| 摘 要： | 基于空间变异理论,本文提出了一种基于半方差函数的STARFM改进模型。该模型利用半方差函数分析基准Landsat影像的空间统计特性,确定影像各波段的空间相关距离——变程,然后将变程的2倍作为STARFM模型滑动窗口的宽度,预测了指定MDOIS时刻的Landsat影像;改变滑动窗口大小后的预测影像和实际观测影像各波段的平均绝对差值和平均差值均大于利用半方差函数确定滑动窗口宽度的预测影像,表明STARFM改进模型具有优越性。 |
| 关 键 词： | STARFM模型 空间变异 融合 半方差函数 |
Research of improved STARFM based on spatial structure variation |
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| WANG Kun,ZHANG Li,WANG Zhi-yong,TIAN Feng.Research of improved STARFM based on spatial structure variation[J].Science of Surveying and Mapping,2013,38(3):140-142,92. | |
| Authors: | WANG Kun ZHANG Li WANG Zhi-yong TIAN Feng |
| Institution: | ③(①College of Geomatics,Shandong University of Science and Technology,Shandong Qingdao 266510,China;②Center for Earth Observation and Digital Earth,Chinese Academy of Sciences,Beijing 100086,China;③School of Environment Science and Spatial Informatics,China University of Mining and Technology,Jiangsu Xuzhou 221116,China) |
| Abstract: | Based on spatial variation theory,this paper put forward an improved STARFM algorithm.The variograms computed on all bands of the based Landsat was conducted,then the move window width was set to twice of this rang,finally the Landsat image at the specified MODIS time was predicted.Results showed that the average absolute difference and average difference between the predicted and actual images are increased while the width of window changed,proving the improvement of this algorithm. |
| Keywords: | STARFM spatial variation fusion variogram |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |