Research on High Dynamic GPS Receiver Loop Tracking
Xingping Zheng · Radio Engineering of China · 2008
To solve such problems as carrier tracking,code tracking and accuracy of GPS signals in high dynamic environment when acceleration is not less than 45g and jerk dynamics reach is not less than 10g/s,an optimal design of carrier and code loops is put forward to meet both dynamic performance and accuracy.This paper discusses the structure of carrier and code loops and the technology transformation from the state acquisition to track in high dynamics and analyzes dynamic stress of FLL/PLL/DLL,transient response and discriminator features.It summarizes a practical control way and loop bandwidth.This scheme can achieve good dynamic performance and also satisfy certain pseudo range accuracy and positioning accuracy,which has been validated through the self-developed software receiver.