Abstract In this manuscript, the temperature model of multilayer insulation (MLI) on a spacecraft solar panel in thermal radiation is considered. The thermal insulation performance of MLI and the stress of the spacecraft are also considered. The thermal equilibrium equation of the surface temperature of MLI spacecraft in the presence of current transfer, and the iterative temperature acquisition algorithm of the front and back surface of solar panel MLI are derived. The Gaussian elimination method is used to invert the high order sparse matrix composed of error coefficients, thus realizing the real-time calculation of thermal re-radiation(TRR). The thermodynamic model was applied to the motion simulation of GPS Block IIR satellites, and the theoretical model was verified based on the actual temperature measurement data of several GPS Block IIR satellites. The simulation results have certain reference value for studying the thermodynamic modeling of MLI spacecraft and TRR perturbation calculation.

中文翻译：

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多层绝缘系统中热再辐射模型的温度模型

摘要 在本手稿中，考虑了热辐射中航天器太阳能电池板上多层绝缘 (MLI) 的温度模型。还考虑了MLI的隔热性能和航天器的应力。推导了存在电流传递时MLI航天器表面温度的热平衡方程，以及太阳能电池板MLI正反面温度迭代采集算法。采用高斯消元法对由误差系数组成的高阶稀疏矩阵求逆，从而实现热再辐射（TRR）的实时计算。将热力学模型应用于 GPS Block IIR 卫星的运动仿真，并基于多颗GPS Block IIR卫星的实际测温数据对理论模型进行了验证。仿真结果对研究MLI航天器的热力学建模和TRR摄动计算具有一定的参考价值。