现代飞行器运动特性复杂,其姿态变化引起的天线对空覆盖特性改变,使得天线前端接收的信号增益变化。传统GPS信号仿真,在处理其信号增益上没有考虑上述影响。为此,综合天线波瓣图、坐标系转换以及飞行器的姿态,导出GPS信号增益模型,实现飞行器姿态在GPS信号仿真上的体现,对于深化卫星信号仿真技术具有工程上的指导意义。 Because of the complex movement characteristics of modern aircraft, the change of the air-to-air coverage characteristics caused by the attitude changes makes the gain of the signal received by the front end of the antenna change. Traditional GPS signal simulation, in dealing with its signal gain did not consider the above effects. Therefore, the integrated antenna lobe pattern, the coordinate system transformation and the attitude of the aircraft are derived to derive the GPS signal gain model to realize the attitude of the aircraft reflected in the GPS signal simulation, which is of engineering significance for deepening the satellite signal simulation technology.