低轨道红外地球模拟器设计

Design of the Low Orbit Infrared Earth Simulator

大型地球模拟器是标校红外地球敏感器的重要设备和仪器,本文针对低轨道地球模拟器的方案进行了设计,通过理论分析确定了描述地球张角大小的光阑尺寸和描述地球红外光谱辐射的黑体热源温度范围,为保证黑体热源表面的温差范围不大于±1.5℃,采用了多点反馈式温度控制的方法,该方法满足了大型地球模拟器红外辐射面源的技术要求。

The large earth simulator is an imporlant equipment to correct the infrared earth sensor.In this paper the tow orbit earth simulator optical system parameters are determined.The stop size which is used to represent the earth chord length is defined and also the temperature range of the black body which is used to represent the earth infrared spec tram radiation is determined through theory analysis.The multi-feedback temperature control method is used so as to ensure the temperature difference of the black body radiation surface is not larger than ±1.5℃ The technique requires of the large earth simulator infrared radiation surface is satisfied.