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文章提出了一种GEO卫星红外地球敏感器的热设计方法,建立了红外地球敏感器热数学模型,对影响红外地球敏感器散热的热设计要素进行敏感性定量分析,以指导优化热设计。分析验证表明:经过优化的红外地球敏感器热控方案,能很好地满足卫星15 a寿命期红外地球敏感器工作温度要求。该设计方法已在“东方红四号”平台系列卫星上成功应用,并得到在轨验证。
In this paper, a thermal design method of GEO satellite infrared earth sensor is proposed. The thermal mathematical model of infrared earth sensor is established. The thermal design elements that affect the heat dissipation of infrared earth sensor are quantitatively analyzed to guide the optimization of thermal design. Analysis and verification shows that the optimized thermal control scheme of infrared earth sensor can well meet the working temperature requirements of the satellite earth-sensing sensor for 15-year lifetime. The design method has been successfully applied on the “Dongfanghong IV” platform series satellites and has been verified in-orbit.