Imperial College London
Alternate

DrShaojunFeng

Faculty of Engineering, Department of Civil and Environmental Engineering

Honorary Principal Research Fellow
 
 
 
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Contact

 

s.feng

 
 
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Location

 

618Skempton BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Wang:2015:10.1007/s10291-014-0382-8,
author = {Wang, X and Ji, X and Feng, S and Calmettes, V},
doi = {10.1007/s10291-014-0382-8},
journal = {GPS Solutions},
pages = {225--236},
title = {A high-sensitivity GPS receiver carrier-tracking loop design for high-dynamic applications},
url = {http://dx.doi.org/10.1007/s10291-014-0382-8},
volume = {19},
year = {2015}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - In order to enhance the tracking performance of global positioning system (GPS) receivers for weak signal applications under high-dynamic conditions, a high-sensitivity and high-dynamic carrier-tracking loop is designed. The high-dynamic performance is achieved by aiding from a strapdown inertial navigation system (SINS). In weak signal conditions, a dynamic-division fast Fourier transform (FFT)-based tracking algorithm is proposed to improve the sensitivity of GPS receivers. To achieve the best performance, the tracking loop is designed to run either in the conventional SINS-aided phase lock loop mode (time domain) or in the frequency-domain-tracking mode according to the carrier-to-noise spectral density ratio detected in real time. In the frequency-domain-tracking mode, the proposed dynamic-division FFT algorithm is utilized to estimate and correct the error of the SINS aiding. Furthermore, the optimal values of the dynamic-division step and the FFT size are selected to maximize the signal-to-noise ratio gain. Simulation results demonstrate that the designed loop can significantly improve the tracking sensitivity and robustness for weak GPS signals without compromising the dynamic performance.
AU  - Wang,X
AU  - Ji,X
AU  - Feng,S
AU  - Calmettes,V
DO  - 10.1007/s10291-014-0382-8
EP  - 236
PY  - 2015///
SN  - 1080-5370
SP  - 225
TI  - A high-sensitivity GPS receiver carrier-tracking loop design for high-dynamic applications
T2  - GPS Solutions
UR  - http://dx.doi.org/10.1007/s10291-014-0382-8
UR  - http://hdl.handle.net/10044/1/53919
VL  - 19
ER  -
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