Open AccessGPS L5 Acquisition Schemes for Fast Code Detection and Improved Doppler Accuracy
Author(s) -
Joo I,
Sin Cheonsig,
Lee Sanguk,
Kim Jaehoon
Publication year - 2010
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.10.0209.0414
Subject(s) - doppler effect , doppler frequency , code (set theory) , computer science , global positioning system , chip , phase (matter) , gps signals , real time computing , electronic engineering , assisted gps , algorithm , telecommunications , engineering , physics , set (abstract data type) , quantum mechanics , astronomy , programming language
In this letter, we propose GPS L5 acquisition schemes to detect a fast code phase and improve the accuracy of the Doppler frequency. The proposed approach is based on the code‐phase changes which occur during the acquisition processing time originating in the Doppler frequency. The proposed schemes detect a fast code phase within about 1 chip near the estimated code phase and improve the accuracy of the Doppler frequency by up to about 4 times in comparison with the popular Septentrio receiver. The feasibility of the proposed schemes is demonstrated through simulation.