提出了基于光线追踪软件Tracepro进行空间卫星的可见和红外光学特征模拟计算的方法。首先建立了卫星位置、卫星表面坐标体系和地球经纬度坐标之间的转换关系,将经过Sinda/G计算获得的卫星表面温度场分布模型导入Tracepro中,设置卫星三维模型的表面特性,包括卫星表面的反射率、发射率等;利用Tracepro中的灰体辐射模拟获得了卫星由于热辐射形成的红外光学特征;并根据建立的转换关系获得某一时刻卫星、地球和太阳之间的相互位置关系,使用该模拟方法可以直观地获得卫星表面光学作用的过程,有利于分析整个过程,提高计算的精确度。

The way to simulate the visible signal and infrared signal from satellite in space based on TracePro is intraduced. First, the satellite position's coordinate, satellite surface's coordinate and the earth's coordinate are converted to one unite coordinate, then the temperature model from Sinda/G is inserted in Tracepro, and the surface properties, such as the reflectivity and emissivity are built. The infrared characteristic of satellite radiation is obtained, using the gray radiation in the software. The distances between the satellite, the earth and the sun are determined by the above conversion. This simulation could directly show the optical action on the satellite surface, is propitious to analyze the process and improve the precision.