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利用ＤＧ－２短波红外光谱辐射计，得到了短波红外彼段不同含水量下的土壤反射率；分析了土壤短波红外区的光憎特性，表明１．６μｍ附近有较好的光谱响应，以及该波段反射率与含水量有较好的负相关性的特点，所得结论为气象卫星短波红外区域的通道选择提供了可行性的依据，该实验为卫星遥感数据的处理、分析和判读积累了部分实测资料。，１９９２年又利用中科院安徽光机所研制的ＤＧ－２短波红外光谱辐射计对不同含水量的壤土、黄土和沙土分别进行了测量，取得了一些反射率数据。２实验装置和结果分析２．１实验装置和规范ＤＧ－２短波红外光谱辐射计由光学头部、电子控制箱和便携式计算机三部分组成。光学头部由三角架支撑，高１ｍ左右，倾角为９０°，即垂直于地面，并且可以水平移动。仪器的波段范围为１．３～２．５μｍ，分辨率为１０ｎｍ，控制箱内装有提供仪器操作的直流电源，以及放大、通讯电路等。便携机内装有驱动仪器操作和计算软件以实现数据的采集、发送和反卫星气象中心支持的
The soil reflectance of shortwave infrared region with different water content was obtained by using DG-2 shortwave infrared spectroradiometer. The light-harshness characteristics of soil shortwave infrared region were analyzed, which showed that there was a better spectral response near 1.6μm, Band reflectivity and water content has a good negative correlation, the conclusions obtained for meteorological satellite shortwave infrared channel selection provides a feasibility basis for the satellite remote sensing data processing, analysis and interpretation of the accumulation of some of the actual measurement data. In 1992, the soil moisture content of loam, loess and sand were measured respectively by DG-2 shortwave infrared spectroradiometer developed by Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences. Some reflectance data were obtained. 2 Experimental setup and result analysis 2.1 Experimental setup and specifications The DG-2 SWIR radiometer consists of an optical head, an electronic control box and a portable computer. Optical head supported by the tripod, about 1m high, 90 ° angle, that is perpendicular to the ground, and can move horizontally. Instrument band range of 1.3 ~ 2.5μm, a resolution of 10nm, the control box is equipped with equipment to provide DC power supply, as well as amplification, communication circuits. The laptop comes with driver-machine operations and computational software for data collection, sending, and ASM support