基于STK的侦察平台-卫星通信链路建模仿真

STK-Based Modeling and Simulation of Communications Link for Reconnaissance Platform and Satellite

为研究侦察平台高速运动、姿态变化剧烈条件下卫星-空中侦察平台通信链路的连通性和误码率性能,在理论分析信道模型、天线模型和信号调制方式的基础上,提出利用STK进行仿真分析的方法。通过对平台轨迹和发射机/接收机的建模,建立精确的仿真场景并进行仿真分析。仿真结果表明,利用上述建模仿真方法,可以实时得到精确的平台-卫星链路连通时间、链路误码率等重要链路性能数据,并较大程度提高了卫星-平台链路的精度,为空中侦察平台-卫星通信链路的设计提供了重要的参考依据。

For communication link simulation problems of satellite - air reconnaissance platform, the influence of channel model , the antenna model and signal modulation model is analyzed , and theoretical modeling of the communication link is given. A precise link＇ s STK-based simulation scenario is established based on the theoretical analysis. Finally, the link＇ s connected time and link performance are analyzed based on the simulation. Simulation results show that the data rate gives impacts on the link connectivity and error rate, and the transmitter frequency also gives a relatively weak effect on link connectivity; aerial reconnaissance platforms with a single transmitter can not always maintain the link between satellite. These simulation conclusions can give some reference on design of link for aerial platforms - satellite communications