Title :
The multipath estimating delay lock loop: approaching theoretical accuracy limits
Author :
Van Nee, Richard D J ; Siereveld, Jaap ; Fenton, Patrick C. ; Townsend, Bryan R.
Author_Institution :
Delft Univ. of Technol., Netherlands
Abstract :
This paper demonstrates that it is possible to largely reduce GPS code and carrier multipath errors by using a specific receiver structure which simultaneously estimates the parameters of line-of-sight plus multipath signals. Test results in various environments show an error reduction up to a factor of ten, as compared to a receiver with a small early-late spacing
Keywords :
coding errors; radio receivers; radionavigation; radiowave propagation; satellite relay systems; telecommunication channels; GPS code errors; accuracy limits; carrier multipath errors; delay lock loop; error reduction; line-of-sight signals; multipath signals; receiver structure; test results; Counting circuits; Delay estimation; Global Positioning System; Manufacturing; Nonlinear equations; Parameter estimation; Signal to noise ratio; Spread spectrum communication; Testing; Tracking loops;
Conference_Titel :
Position Location and Navigation Symposium, 1994., IEEE
Conference_Location :
Las Vegas, NV
Print_ISBN :
0-7803-1435-2
DOI :
10.1109/PLANS.1994.303320
