Research on Rotation Angle Measurement and Rotation Demodulation Technology Based on Satellite Navigation
In order to solve the problem that the satellite signal received by rotating carrier is not easy to synchronize due to the changes of received signal amplitude and carrier phase,a rotation demodulation loop system structure based on tradition phase-locked loop(PLL)is proposed,key technologies such as rotation angle measurement,antenna diversity and rotation phase demodulation are studied:The real-time measurement of rotation angle is realized by using the rotation angle tracking loop based on PLL.The antenna diversity technology and rotating phase demodulation technology are used to compensate the phase change and antenna phase winding introduced by the rotation,which improves the tracking accuracy of the rotating carrier satellite navigation.Through simulation anal-ysis,it verifies the effectiveness of the proposed rotation angle measurement technology,antenna diversity technology and rotation phase demodulation technology.
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