Influence of the non-uniform underlying surface on the temperature of space object

The temperature of space object is influenced by the underlying surface of the earth. In the thermal analysis of the space object, the underlying surface of the earth is regarded as uniform thermal radiation surface. Affected by the landmark and meteorological conditions, the reflectivity and radiation flux intensity changes with the location and the season. The simulation method of the radiant heat flux of the earth was given. Based on the data of the telemetric temperature and different land cover types of the earth, using different simulation method of the radiant heat flux, the influence of the non-uniform underlying surface on the temperature of space object was analyzed. The influence to the light decoys was a little obvious.