天线方向图在GPS仿真实验中的应用

内容简介：利用Spirent公司的GSS6560 GPS模拟器建立了仿真平台,将载体姿态和接收机天线方向图加入到仿真过程中,模拟了载体姿态变化和天线方向图对接收到的卫星信号的影响,针对有无天线方向图和载体姿态变化的不同情况进行了对比实验,分析了卫星信号强度的变化过程,验证了载体姿态变化对接收机工作情况的影响,为GPS接收机测试和有GPS参与的组合导航系统半实物仿真提供了更加真实的仿真环境.

Abstract：Simulation platform was established using GSS6S60 GPS simulator from Spirent Company. Vehicle attitude and antenna radiation pattern of the receiver were considered during the simulation. The influence of vehicle's attitude variation on the received satellite signals was simulated. Experiments were carried out for comparison under different conditions with or without vehicle's attitude variation and antenna radiation pattern. The variation of satellite signal power was analyzed and influence of vehicle's attitude variation on the performance of receiver was validated. This simulation provides a more actual simulation environment for GPS receiver test and integrated navigation system hardware-in-the-loop simulation with GPS receiver.

作者：王康, 刘莉, 杜小菁,

关键词：天线方向图, GPS模拟器, 信号强度, 载体姿态,