Abstract:
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.