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Tong Qingxi(The Branch Socicty of Environmemal Remote Sensing, Geographycal Sorwty of China. Beijing, 100101)  
Virtually, remote sensing is the physical measurement of geo process and geo-features on the earth surface without direct contacting with it. In this paper the relationship between geography and remote sensing is described. Remote sensing is an independent science and technology and also is a support technique for geographical studies on other hand. By using of remote sensing the procedure of geographical studies has been essentially changed.During the last decade remote sensing has developed from its experimental stage to the operational stage. As the representative of remote sensing system, Landsat and SPOT satellites have found its wide application in geography, geology, engineering urban planing, surveying and mapping, meteorological, hydrology, oceanography, environmental monitoring, agriculture, forestry and other disciplines. In addition, the meteorological satellites such as NOAA series satellite also have its great potential by its high frequency of repeated coverage of earth surtace.Three important frontiers of remote sensing are described in this paper. Microwave remote sensing and high spectral resolution remote sensing are the most important new fields.Great attention has been paid in development of such new remote sensing fields in the last decade. Microwave remote sensing has its all weather, all time and proper penetration capabilities while the high spectral resolution remote sensing has fairly high spectral resolution with nano-meter (nm) level. Both of them has provided a great potentials for the study of earth surface phenomena. The information about the structure. the soil moisture, the penetration infromation under dry sand and the information about the flooding provided by microwave remote sensing has greatly enriched the knowledge of earth sciences for buman being.With increasing the spectral bands and spectral resolution the abilities of identification of surface materials and components such as minerals and mineral alterations, vegetation and vegetation under the environmental stress have been greatly enhanced. the spectral diagnostic features of the earth objects extrated from the hyperspectral imagery can be used for identification and classification with high accuracy.The study of earth simultaneously and in real tinle base at global scale has become possible only with remote sensing. The dynamic change of drainage. migration of coast lines and water bodies, landuse change, land degradation, desertification, deforestation and biomass distribution. can be analysed and mapped by using of remote sensing. Remote sensing is also in developing with integration and support of Geographic information System (GIS) . Global Positioning System (GPS), Expert System (ES) and other science and technologies. Remote sensinghas shown its broad prospects in the coming decade.
【CateGory Index】: TP7
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