【摘要】 在遥感、地理信息系统和全球定位系统技术综合应用于山区土地资源动态监测领域的研究工作中 ,探讨采用以图像差值法为主 ,分类后比较法为辅提取土地利用变化信息的基本思路和方法 ,提出采用定量统计分析的方法来选择合适的差值计算波段和相应的变化阈值。在数据分析过程中 ,GPS测量数据发挥了重要作用。更多还原

【Abstract】 On the basis of the project work for dynamic monitoring of land_use change in mountainous area by utilizing technologies of remote sensing, GIS and GPS, framework of quantitative and statistical analysis procedure is presented in this paper. Attentions has been paid to core technical issues such as band selection for image subtraction and changing threshold selection, in order to derive proper change information from TM image data. Compare between basic approaches for image change detection, i.e., comparative analysis of multitemporal classified data, and simultaneous analysis of multitemporal data, is also provided. In the research process, GPS surveying data has played an important role.更多还原