Abstract
Satellite-to-facility link is an effective data transmit link built between satellite and facility. This paper analyses the performance indexes of satellite-to-facility link, and environmental factors which influence the quality of the link, designs and implements satellite-to-facility link simulation environment based on STKX, and then calculates the access time between satellite and facility through calling STK computing function by STKX. Finally, analyses the link performance indexes such as SNR, BER and so on.