Journal
GPS SOLUTIONS
Volume 16, Issue 2, Pages 197-207Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s10291-011-0222-z
Keywords
Phase lock loop; Kalman filter tracking; L1 signal; L5 signal
Categories
Funding
- General Motors of Canada
- Natural Science and Engineering Research Council of Canada
- Alberta Advanced Education and Technology
- Western Economic Diversification Canada
Ask authors/readers for more resources
The carrier phase tracking loop is the primary focus of the current work. In particular, two carrier phase tracking techniques are compared, the standard phase tracking loop, i.e., the phase lock loop (PLL), and the extended Kalman filter (EKF) tracking loop. In order to compare these two different techniques and taking into consideration the different models adopted in each, it is important to bring them to one common ground. In order to accomplish this, the equivalent PLL for a given EKF has to be determined in terms of steady-state response to both thermal noise and signal dynamics. A novel method for experimentally calculating the equivalent bandwidth of the EKF is presented and used to evaluate the performance of the equivalent PLL. Results are shown for both the L1 and L5 signals. Even though the two loops are designed to track equivalent dynamics and to have equivalent carrier phase standard deviations, the EKF outperforms the equivalent PLL in terms of both the transient response and sensitivity.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available