| 利用主成分分析法提取绿洲水体专题信息的研究 |
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| 引用本文： | 丁建丽.利用主成分分析法提取绿洲水体专题信息的研究[J].云南地理环境研究,2005,17(2):11-14. |
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| 作者姓名： | 丁建丽 |
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| 作者单位： | 北京师范大学,地理学与遥感科学学院遥感与地理信息系统研究中心,北京,100875;新疆大学,资源与环境科学学院,新疆,乌鲁木齐,830046 |
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| 基金项目： | 国家重点基础研究项目(G1999043508)，中科院2003年度“西部之光”计划项目资助. |
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| 摘 要： | 水资源对于以荒漠为背景的绿洲具有极其重要的作用,及时掌握绿洲水体的动态变化定量信息,对于合理调控绿洲区域生态环境,可持续发展区域经济活动具有重要意义。针对塔里木盆地南部特有的极端干旱地区,选择策勒绿洲为重点研究靶区,采用主成分分析方法,提取1990和1998年两幅卫星图像中水体专题信息。与以往方法相比,该方法不仅可有效避免常规分类法中存在的误差累积,结果出现较多伪变化信息的缺陷;亦可减小辐射差异对光谱比较法的极大限制,从而直接获得水体变化信息,实现过程简单、清楚,可操作性强。
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| 关 键 词： | 遥感 信息提取 主成分分析 |
| 文章编号： | 1001-7852(2005)02-0011-04 |
| 修稿时间： | 2004年1月29日 |
STUDY ON OASIS WATER BODY THEMATION EXTRACTION USING PCA WAY |
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| DING Jian-li.STUDY ON OASIS WATER BODY THEMATION EXTRACTION USING PCA WAY[J].Yunnan Geographic Environment Research,2005,17(2):11-14. |
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| Authors: | DING Jian-li |
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| Institution: | DING Jian-li1,2 |
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| Abstract: | Water is very important to the oasis with the background of desertification. It is more significant to control regional ecological environment and put forward the regional sustainable development of grasping the quantificational dynamic change information of water body in time. The techniques of studying on satellite remote sensing information extraction are still the core field of remote sensing system. Choosing the typical Cele oasis as a study area, using PCA models based on knowledge extract thematic information of water body between 2 satellite image in the year of 1990 and 1998. Comparing with the past common used way, this way represent the maturation phase, conclusions is much meaning to extract remote sensing information accurately. Using this technique will help to extract runoff area quantitatively and enhance arid area research. |
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| Keywords: | remote sensing information extraction PCA |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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