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Carrier Tracking Loop Design Using FLL-assisted PLL Scheme for Galileo L1F Channel  

Choi, Seung-Duk (충북대학교 전파공학과)
Lee, Sang-Kook (충북대학교 전파공학과)
Hawng, In-Kwan (충북대학교 전파공학과)
Shin, Cheon-Sig (한국전자통신연구원)
Lee, Sang-Uk (한국전자통신연구원)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.33, no.12A, 2008 , pp. 1217-1224 More about this Journal
Abstract
The carrier tracking has to be basically completed for accurate positioning of Galileo satellite system. The FLL for tracking frequency errors is robust to dynamic stress causing changes of propagation time but hardly tracks accurate carrier tracking. The PLL for tracking phase errors provides accurate carrier tracking but is sensitive to dynamic stress and its tracking performance is decreased when high dynamics exist. In this paper, we design the carrier tracking loop with the FLL-assisted PLL loop filter and co-operations of FLL and PLL to achieve accurate carrier tracking in high dynamic stress. we prove the performance of designed carrier tracking loop via simulations.
Keywords
FLL-assisted PLL; Dynamic stress; Loop Bandwidth; Aiding Doppler;
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  • Reference
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