高空光学遥感器热设计参数的灵敏度分析

为减小高空光学遥感器的热设计误差,提高其热控效率,利用灵敏度分析方法对高空光学遥感器的热设计参数进行了分析。根据能量守恒定律建立了光学遥感器高空航摄时的热平衡方程,并对影响透镜组件温度分布的热设计参数进行了灵敏度分析。分析结果表明,对流换热、内部热源及构件之间的热阻对高空光学遥感器透镜组件的温差影响较大。试验结果表明,基于灵敏度分析结果的热设计方案合理有效。

Sensitivity analysis of thermal design parameters for altitude optical sensor

To reduce the thermal design errors of high-altitude optical remote sensor and improve the efficiency of its thermal control, the thermal design parameters of high-altitude optical remote sensor were analyzed using the method of sensitivity analysis. Based on the energy conservation law, the heat balance equation of optical remote sensor was built in the high altitude environment, and the sensitivity analysis of the thermal design parameters which could influence the temperature distribution of the lens assembly was achieved. The analysis results show that heat convection, internal heat source and the thermal resistance between components have great impact on the temperature difference of lens assembly in high-altitude optical remote sensor. The test results show that the thermal design based on the sensitivity analysis results is rational and effective.