The Doppler frequency shift, the main factor restricting the bandwidth of receiver in inter satellite laserlink, with orbit equations is calculated.
从轨道方程出发，对影响卫星光链路接收机带宽的主要因素———多普勒频移进行了研究。
2
Theory analysis and computer simulation show that the precision and focus of star tracker, the divergence angle of down beam influence the probability of laserlink setting up.
The transmitter beam is Gaussian for real satellite-ground laser communication system. The pointing jitter and atmospheric scintillation are the main noise sources for satellite-ground laserlink.