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多少年来,人们一直沿用实地勘查、航空象片等传统的方法进行土地清查和水资源清查.到七十年代,陆地卫星多光谱扫描仪(MSS)被广泛应用,因为它具有重复监测、覆盖范围大、信息数字化和具有红外波段的特点.但人们一直希望能获得一种分辨率更高的卫星摄象资料.目前,新发射的载有专题成象扫描仪(TM) 的卫星正在完善这种功能.本文通过对(MSS)信息和TM信息的各种性能特征及功能的对比,证明了TM信息的优越性,并指出未来卫星发射将为遥感这一科技领域的发展展示广阔的前景.在清查土地和水资源的过程中,人们使用的传统方法是实地勘查或利用航空象片、卫星影像等.对于卫星的研究,大多数人感兴趣于利用陆地卫星(Landsat)的多光谱扫描仪(MSS),因为它具有重复监测的特点.七十年代以来,MSS以其覆盖范围大、信息数字化和具有红外波段的特点.在大范围的勘查研究中得以广泛的应用.但是,为了满足更加准确的土地利用研究的需要,人们一直希望能获得一种分辨率更高的卫星影像资料.因此.美国国家航空和宇宙航行管理局(NASA)发射了两颗载有主题成象仪(TM)(亦称专题成象扫描仪)的新卫星;即第4颗陆地卫星和第5颗陆地卫星.这两颗卫星的信息比陆地卫星MSS信息具有更高的精度和分辨率.
For many years, land tracing and water inventory have traditionally been conducted using field surveys, aerial photographs, etc. By the 1970s, the Landsat MSS was widely used because of its ability to monitor repetitively, Large, digitized information and has the characteristics of an infrared band, one has always wanted to obtain a more resolved satellite imagery which is currently being refined by newly launched Special Imaging Scanners (TMs) Function.This paper proves the superiority of TM information by comparing various performance characteristics and functions of (MSS) information and TM information, and points out that future satellite launches will have broad prospects for the development of remote sensing technology. The traditional method used by people to inventory land and water resources is to field survey or utilize aerial photographs, satellite images, etc. For the study of satellites, most people are interested in using Landsat’s multispectral scanner MSS) because it has the characteristics of repeated monitoring. Since the 1970s, MSS with its large coverage, digital information and has the characteristics of the infrared band in a wide range of exploration However, in order to meet the demand of more accurate land use research, people always hope to get a higher resolution satellite imagery, so the NASA launches Two new satellites containing thematic imagers (TMs), also known as specular imaging scanners, namely the 4th terrestrial satellite and the 5th terrestrial satellite, which have more information than terrestrial satellite MSS information Higher accuracy and resolution.