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http://dx.doi.org/10.5394/KINPR.2006.30.5.343

A GPS Initial Synchronization Method for Robust DGPS Reference Stations in Noisy Environment  

Park Jeong-Yeol (Graduate School, Department of Electronics Engineering, Dongguk University)
Park Sang-Hyun (Korea Ocean Research & Development Institute)
Sin Jae-Ho (Department of Electronics Engineering, Dongguk University)
Publication Information
Journal of Navigation and Port Research / v.30, no.5, 2006 , pp. 343-349 More about this Journal
Abstract
In order to enhance the robustness against noisy environment, the previous GPS initial synchronization method of DGPS reference stations adopts not only the coherent integration method but also the non-coherent integration method. However the previous GPS initial synchronization method muses the non-coherent integration loss, which is a dominant factor among the signal acquisition losses in noisy environment. And the non-coherent integration loss increases with the strength of noise signal. In this paper, a novel GPS initial synchronization method is proposed for robust DGPS reference stations in noisy environment. This paper presents that the proposed GPS initial synchronization method suppresses the non-coherent acquisition loss. Furthermore, with regard to the mean acquisition time, it is shown that the number of the search cells of the proposed GPS initial synchronization method is much smaller than that of the previous GPS initial synchronization method Finally, through the simulation by the GPS simulator, it is seen that the GPS signal of nigh signal-to-noise ratio can be acquired under increased noise floor using the proposed GPS initial synchronization method.
Keywords
GPS Initial synchronization; DGPS reference station; Noisy environment; Non-coherent integration loss;
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