Ku频段卫星通信链路计算

卫星通信具有容量大、成本低、抗干扰性能强、覆盖面积广和通信距离远等优势,已成为舰船通信的重要手段。针对Ku频段卫星通信的特点,提出了一种链路计算方法,并给出了岸基发送站、卫星转发器和接收系统的参数,通过实例分析,计算上行发送站的EIRP、接收站天线的方位、链路降雨衰减、链路载噪比及链路余量等,从而设计出合理的链路预算。

Calculation of Ku-Band Satellite Communication Link Budget

For its large capacity, low cost, strong anti-interference ability, wide coverage, long communication distance and other excellent characteristics, satellite communication now becomes an important means of ship communication .Aiming at the characteristics of Ku-band satellite communication, this paper puts forward a method for link-budget calculation, gives the main parameters of shore-base transmitting station, satellite transponder and receiving system. Based on analysis of specific examples, EIRP of the up-going transmitting station, antenna azimuth of the receiving antenna, rain attenuation of the link, carriernoise ratio of the link margin are calculated. And finally a reasonable link budget is produced.