Study on Thermal Distortion and Thermal Design Optimization of Satellite Antenna Reflector during Orbit Period

Abstract

Reflector thermal distortion status is essential to performance stability of communication satellite antenna in geosynchronous orbit, and should be carefully validated in design period. Thermal distortion simulation of current satellite antenna reflector is usually conducted by numerical calculation of extreme temperature field condition from thermal analysis results. However, telemeasuring result shows that, the worst performance time of antenna is not usually under these extreme temperature conditions, and it is necessary to analyze the thermal distortion features of satellite antenna during the whole orbit period to provide efficient instructions for design of the antenna thermal control.