Multipath effects on vector tracking algorithm for GNSS signal

作者：Luo Yu; Wang YongQing^*; Wu SiLiang; Wang Pai

来源：Science China Information Sciences, 2014, 57(10): 102312.

DOI：10.1007/s11432-014-5153-1

• GNSS
• multipath
• VDFLL
• EKF
• tracking error

The vector tracking algorithm uses a single extended Kalman filter (EKF) to predict the time-delays and the Doppler deviations of the GNSS signal, while also estimating the user's position, velocity, and clock state. In this paper, the effects of multipath on the tracking performance of the vector delay / frequency lock loop (VDFLL) is studied for better application in the multipath environment. The error expressions of the measurements are given in theory. The tracking error caused by multipath is reduced by VDFLL, which is proved by the tracking error of VDFLL through a new iterating method. The theoretical analysis is verified by the Monte Carlo simulation.

• 出版日期2014-10
• 单位北京理工大学