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http://dx.doi.org/10.12673/jant.2011.15.4.495

A New Design Method of a Code Tracking Loop using C/N0 in a GPS Receiver  

Lim, Deok-Won (Satellite Navigation Department, Korea Aerospace Research Institute)
Jin, Mi-Hyun (Department of Electronics Engineering, Chungnam National University)
Lee, Sang-Jeong (Department of Electronics Engineering, Chungnam National University)
Hoe, Moon-Boem (Satellite Navigation Department, Korea Aerospace Research Institute)
Nam, Gi-Wook (Satellite Navigation Department, Korea Aerospace Research Institute)
Publication Information
Journal of Advanced Navigation Technology / v.15, no.4, 2011 , pp. 495-501 More about this Journal
Abstract
The characteristics of a discriminator estimating a tracking error in a signal tracking loop of a GPS receiver can be affected by the noise power, and the slope of the discriminator function is actually lowered as the noise power increases. In this paper, an algorithm to compensate the lowered slope of the function using the estimated C/N0 is studied, and a new design method of a code tracking which provides more accurate tracking error than a conventional one by adopting the compensation algorithm is proposed. Through the experimental results, finally, it has been check that the accuracy of the proposed DLL is enhanced about 50% when the dynamics of the vehicle is 20g/s.
Keywords
Discriminator; DLL; C/N0;
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  • Reference
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