基于卫星的共频带传输链路性能仿真分析

Simulation and Analysis to Link Performance of Common Frequency Transmission Base on Satellite

摘要:

对共频带传输卫星通信系统的链路性能进行了研究,分析了背景信号的链路计算方法及背景信号对共频带传输信号传输性能的影响；分析了共频带传输信号的链路计算方法及共频带传输信号对背景信号的影响；结合典型卫星、地球站,仿真分析了不同卫星模型、地球站模型、背景信号功率等因素对共频带传输系统传输性能的影响；在一些典型卫星模型条件下,系统的传输能力可以达到20kbps,甚至更高；系统接收性能并不是随地球站天线口径增大,线性增大；背景信号功率大于30dBW时,共频带传输信号接收性能随背景信号功率增大,急剧下降。

Abstract:

A study was conducted on the transmission performance of a common frequency band transmission satellite communication system, analyzed the link calculation method for background signals and the influence of background signals on transmission performance of common frequency band transmission signals; analyzed the link calculation method for common frequency band transmission signals and the influence of common frequency band transmission signals on background signals, combining typical satellites, earth station, simulated and analyzed the influence of the factors of different satellite models, earth station model, background signal power on the transmission performance of common frequency band transmission system; under some typical satellite model conditions, the system transmission capacity can reach 19.2kbps, and even better. The system reception performance does not increase with the aperture of the ground station antenna, linear increase, when the background singnal power is greater than 30Dbw, the reception performance of common band transmission signals increases with the increase of background signal power, sharp decline.