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地球模拟仪是一种大面积黑体源,用于模拟地球表面温度分布。目前国际上对大型黑体源温度分布均匀性的要求是:在20～70℃的使用温度范围内,沿扇形弧面工作区的温差不超过2℃。本工作系采用AGA 780红外热象仪对地球模拟仪温度场进行测试和调整。任何大于绝对零度的物体都有红外辐射,红外热象仪接收从目标发射的红外辐射能量,通过光学传递和机械扫描,转变成电信号,使被扫描物体的红外辐射以可见黑白图象的形式在荧光屏上显示。仪器测温精度高,反应速度快,不接触目标,因而也就不影响被测目标的热分布。
The Earth Simulator is a large-area blackbody source that simulates the temperature distribution over the Earth’s surface. At present, the requirements for temperature uniformity of large blackbody sources in the world are as follows: the temperature difference along the fan arc working surface does not exceed 2 ° C within the service temperature range of 20-70 ° C. This work is to use AGA 780 infrared thermometer to test and adjust the temperature field of the earth simulator. Anything greater than absolute zero has infrared radiation. The infrared camera receives the infrared radiation emitted from the target and converts it into an electrical signal by optical and mechanical scanning so that the infrared radiation of the scanned object is in the form of a visible black and white image Display on the screen. Instrument temperature measurement accuracy, fast response, do not touch the target, so it will not affect the thermal distribution of the measured target.