遥感技术与日蓬勃发展,在地矿、石油、水文、林业、土地、测绘等领域迅速推广应用。可见光波段所提供的信息最直观,且视域广,获取资料速度快,是遥感信息应用中最广泛的一种。但在干旱区,可见光波段显示的地物对比度小,不易识别,而且在夜晚一切都不可见,尤其在第四系覆盖层下的地物更不可知。中科院地球物理所的遥感应用研究,根据本学科用多种技能探测地下奥秘的特点,于可见光遥感信息应用的同时,着重开发能识别地表第四系覆盖层下地物特点的热红外遥感应用。热红外辐射强度反映地物本身的温度特性。地表下地物的温度通过热传导,不论白天或夜晚都能穿过地球大气层到达宇宙空间,为卫星上的传感器所接收。各种不同地物的密度、热传导、热容量、热惯量均有差异,它们的关系虽复杂,通过一系列分析处理,及与地质、地球物理数据复合应用,并以野外地质观察、地质钻探、地球物理勘探的地质解释来检验,可以识别隐伏在地表下的一些地物。近年来,我们利用热红外遥感信息发现了地表肉眼看不见的地热田、地下水、隐伏地质构造等,下 Remote sensing technology and Japan booming, in the field of mining, petroleum, hydrology, forestry, land, surveying and mapping and other fields rapidly promote the application. Visible light band provides the most intuitive information, and wide field of view, access to data faster, is the most widely used remote sensing information. However, in the arid region, the contrast of the objects displayed in the visible light band is small and not easy to identify, and it is not visible at night. In particular, the features under the cover of the Quaternary are even more unknown. According to the remote sensing application research of the Institute of Geophysics of the Chinese Academy of Sciences, based on the characteristics of underground mysteries detected by a variety of skills in this discipline, the application of visible remote sensing information is focused on the development of thermal infrared remote sensing applications that can identify the features of terrestrial Quaternary overlays. The thermal infrared radiation intensity reflects the temperature characteristics of the object itself. The temperature of the subsurface features is transmitted through the heat and can travel through the Earth’s atmosphere, both day and night, to space and is received by the sensors on the satellite. The density, heat conduction, heat capacity and thermal inertia of different kinds of ground objects are all different. Although their relationship is complex, through a series of analysis and treatment, and with the application of geology and geophysics data, combined with field geological observation, geological drilling, Geophysical interpretation of the physical interpretation of the test, you can identify hidden under the surface of some of the features. In recent years, we use thermal infrared remote sensing information to discover the geothermal field, groundwater, concealed geological structure that can not be invisible to the surface,