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陡河水库是陡河电厂的冷却水源,为了充分利用冷却水源、扩大发电容量,使用航空多光谱扫描和航空摄影等遥感手段,对水库的温度场、温水的流速场和水深等进行了综合调查,为建立冷却池数学模型提供了参数。本文重点介绍温度场调查中的有关技术问题。 DS-1260多光谱扫描仪具有从紫外到热红外12个通道,以数字编码形式同时记录在高密度磁带上,然后由地面图象处理系统(DS-1840)转换成12个通道的黑白或彩色图象。扫描仪的数字化仪器可将各通道全部信息分为256个等电平并记录下来。按照仪器设计要求,温度定标范围最小温差为80℃,经细分处理最高可达0.03℃。在红外波段,红外扫描仪的温度分辨率为0.2℃,但通过线性内插可提高温度分辨率。陡河水库的定标温差达14℃,经
Douhe Reservoir is the cooling water source of Douhe Power Plant. In order to make full use of the cooling water source and expand the generating capacity, a comprehensive survey of the temperature field of the reservoir, the velocity field of the warm water and the water depth is carried out by means of remote sensing such as aerial multispectral scanning and aerial photography , Which provides the parameters for establishing the mathematical model of cooling pool. This article focuses on the technical aspects of temperature field surveys. The DS-1260 Multispectral Scanner features 12 channels from ultraviolet to thermal infrared that are digitally recorded simultaneously on high-density magnetic tape and then converted to 12 channels of monochrome or color by the Ground Image Processing System (DS-1840) Image. The digitizer of the scanner divides all the information of each channel into 256 equal levels and records them. According to the design requirements of the instrument, the minimum temperature difference between the temperature calibration range is 80 ℃, and the sub-treatment can reach up to 0.03 ℃. In the infrared band, the temperature resolution of the infrared scanner is 0.2 ° C, but the temperature resolution can be increased by linear interpolation. Steep river reservoir calibration temperature of 14 ℃, after