旋转弹引信用卫星定位接收信号旋转解调方法

为解决旋转弹飞行中的高旋转、高动态条件会造成卫星定位接收系统无法正常定位的问题，针对旋转、动态环境开展了旋转弹卫星定位接收信号旋转解调方法的研究.详细分析了旋转条件对卫星定位信号接收的影响，并针对旋转特性设计了旋转跟踪解调环，用于对旋转的跟踪与解调，给出了旋转弹卫星定位信号接收系统的设计方案，基于Simulink实现了旋转弹卫星定位信号接收系统的仿真，并给出了相应的仿真与实验结果.结果表明，设计的以旋转跟踪环为核心的旋转弹卫星定位信号接收系统，在中心频率为200 Hz的情况下跟踪范围可达到±40 Hz，较好地满足了转速在200转/s左右的旋转弹信号接收要求. 

Rotation Demodulation of GNSS Signal in Rotating Projectile Fuze

In order to solve the incorrect positioning problem of satellite orientation receiver caused by the rotating and high dynamic process of rotating projectile,a positioning signal receiving method for rotating body satellite was proposed.Firstly,the effect of rotation condition on the satellite positioning signal reception status was analyzed detailedly;and then,a rotating tracking demodulation loop was designed for rotation tracking and demodulation,and a rotating body satellite positioning signal receiving system was designed;finally,the system was simulated with Simulink and the corresponding simulation and experimental results were achieved.The results show that the rotating body GNSS receiver based on the track loop can get a track range up to ±40 Hz,in the case of 200 Hz center frequency,which can meet the requirements of rotating body tracking about 200 rev/s.