|
|||||
|
|
| 遥感尺度问题研究进展 | |
| 引用本文： | 苏理宏,李小文,黄裕霞.遥感尺度问题研究进展[J].地球科学进展,2001,16(4):544-548. |
| 作者姓名： | 苏理宏 李小文 黄裕霞 |
| 作者单位： | 1. 北京师范大学遥感与地理信息系统研究中心, 2. 北京师范大学遥感与地理信息系统研究中心;Department of Geography and Center for Remote Sensing, Boston University 3. 中国科学院地理科学与资源研究所, |
| 基金项目： | 国家“九五”攀登预选项目 (95 -预 -38)，国家重点基础研究发展规划项目(编号 :G2 0 0 0 0 9770 0 )，国家自然科学基金项目“用热点 |
| 摘 要： | 尺度是与空间现象有关的术语，在地学研究中更是一个重要的概念，忽视遥感观测的尺度效应，使得对地观测难以获得精确的地表参数，这一问题已经引起国际遥感界的重视，遥感物理建模和遥感数据应用都有尺度问题，像元尺度上地表参数的定量描述是建立遥感尺度转换模型和信息转换模型的基础，试图从尺度的定义，遥感尺度问题所涉及的内容和遥感尺度效应研究常用的技术方法等三个方面论述遥感尺度问题的研究进展，像元尺度上地表参数的定量描述是遥感信息尺度转换的基础。 |
| 关 键 词： | 遥感模型 尺度问题 尺度转换 地表参数 遥感信息 对地观测 |
| 文章编号： | 1001-8166(2001)04-0544-05 |
AN REVIEW ON SCALE IN REMOTE SENSING |
|
| SU Li hong ,LI Xiao wen ,HUANG Yu xia.AN REVIEW ON SCALE IN REMOTE SENSING[J].Advance in Earth Sciences,2001,16(4):544-548. | |
| Authors: | SU Li hong LI Xiao wen HUANG Yu xia |
| Affiliation: | 1. Research Center of Remote Sensing and GIS, Beijing Normal University，Beijing 100875,China；; 2. State Key Laboratory of Resource and Environment Information Systems, Institute of Geographic Sciences and Natural Resources Research,Beijing 100101,China；; 3. Dept Geography and Center for Remote Sensing, Boston University, Boston, MA02215, USA |
| Abstract: | The concept of scale is applied very broadly, scale is undoubtedly one of the most fundamental aspects of any research. There are four common connotations of scale in geography: cartographic scale or map scale, geographic scale or extent, resolution, and operational scale. Science of scale is considered to seek answers to the following questions. (1)The role of scale in the detection of patterns and processes, and its impact on the modeling; (2) The identification of domains of scale (invariance of scale) and scale thresholds; and (3) scaling, and the implementation of multiscale approaches for analysis and modeling. In context of remote sensing, applicability of some basic physics laws, such as, Helmholtz principle, Beer law, and Planck law, must be examined carefully, due to heterogeneity of pixels. And based on the same reasons, we should not use remote sensing physics models and applied models optionally on any resolutions, while these models are created on one special resolution. Some approaches that are used to examine scale invariance of model have been discussed in the paper. Concepts of spatial autocorrelation and spatial statistics have been introduced as a basis for understanding the effects of scale, wavelets and fractals provide a more comprehensive framework for prediction of scale effects. The quadtree data structures provide a consistent, logical way to multiscale modeling that is well grounded in theory and compatible with many ideas of physical process. |
| Keywords: | Remote sensing modeling Scale issue Scale transformation Surface parameter |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
| 点击此处可从《地球科学进展》浏览原始摘要信息 | |
| 点击此处可从《地球科学进展》下载全文 | |
