首先建立了空间目标的热平衡方程,并利用节点网络法求解了目标表面的温度分布。然后根据普朗克定律计算了目标的红外辐射,给出了求解空间目标红外辐射的一般方法,最后结合具体的实例和相应的简化条件,对大气层外某空间目标的温度分布和红外辐射分布进行了数值计算,计算结果验证了理论分析的正确性。 First, the thermal equilibrium equation of the space target is established and the temperature distribution of the target surface is solved by using the node network method. Then the infrared radiation of the target is calculated according to Planck’s law and the general method for solving the infrared radiation of the space target is given. Finally, the temperature distribution and the infrared radiation distribution of a space object outside the atmosphere are analyzed with concrete examples and corresponding simplified conditions The numerical calculation, the calculation results verify the correctness of the theoretical analysis.