TY - JOUR
T1 - Phase/frequency tracking in a GNSS software receiver
AU - Juang, Jyh Ching
AU - Chen, Yu Hsuan
N1 - Funding Information:
Manuscript received July 01, 2008; revised April 14, 2009. Current version published July 17, 2009. This work was supported by the National Science Council, Taiwan, under Grant NSC 96-2628-E-006-246-MY2. The associate editor coordinating the review of this manuscript and approving it for publication was Dr. Mohamed Sahmoudi.
PY - 2009
Y1 - 2009
N2 - In the paper, a software-based technique for the tracking of frequency and phase of Global Navigation Satellite System (GNSS) signals is proposed. It is shown that a software-based receiver with precomputed, zero-phase carrier replicas for phase tracking is subject to phase jump in phase tracking and ambiguity problems in frequency estimation. A phase/frequency tracking architecture is proposed in which the frequency of the incoming signal is estimated based on a lead-lag structure which is similar to a traditional delay locked loop and the phase, after de-rotation, is estimated using a frequency-aiding phase locked loop. The effects of thermal noise and resolution-induced noise are analyzed and verified using simulation. The significance of frequency aiding in enhancing the phase tracking response is also described.
AB - In the paper, a software-based technique for the tracking of frequency and phase of Global Navigation Satellite System (GNSS) signals is proposed. It is shown that a software-based receiver with precomputed, zero-phase carrier replicas for phase tracking is subject to phase jump in phase tracking and ambiguity problems in frequency estimation. A phase/frequency tracking architecture is proposed in which the frequency of the incoming signal is estimated based on a lead-lag structure which is similar to a traditional delay locked loop and the phase, after de-rotation, is estimated using a frequency-aiding phase locked loop. The effects of thermal noise and resolution-induced noise are analyzed and verified using simulation. The significance of frequency aiding in enhancing the phase tracking response is also described.
UR - http://www.scopus.com/inward/record.url?scp=68249160065&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=68249160065&partnerID=8YFLogxK
U2 - 10.1109/JSTSP.2009.2023832
DO - 10.1109/JSTSP.2009.2023832
M3 - Article
AN - SCOPUS:68249160065
VL - 3
SP - 651
EP - 660
JO - IEEE Journal on Selected Topics in Signal Processing
JF - IEEE Journal on Selected Topics in Signal Processing
SN - 1932-4553
IS - 4
ER -