PLL Phase Jitter Analysis and Minimisation

F.A. Khan, A.G. Dempster, C. Rizos

Abstract:	Carrier phase positioning is a reliable approach that offers better accuracies than pseudorange-based positioning. It relies on carrier phase measurements that originate from the carrier tracking loop. The performance of this loop dictates the quality of the phase measurements and consequently the quality of the final positioning solution. Carrier phase jitter, which is the metric of carrier loop’s performance, needs to be reduced to improve carrier phase measurement quality. This paper first analyses the carrier phase jitter and provides rationales for its reduction. It then discusses four jitter reduction techniques that could be adapted to improve the situation for low as well as high Carrier-to-Noise- and Interfernce- Ratio (CNIR) signals. A performance comparison is presented and the trade-offs involved in the selection of either of these schemes are discussed.
Published in:	Proceedings of the 23rd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2010) September 21 - 24, 2010 Oregon Convention Center, Portland, Oregon Portland, OR
Pages:	3244 - 3250
Cite this article:	Khan, F.A., Dempster, A.G., Rizos, C., "PLL Phase Jitter Analysis and Minimisation," Proceedings of the 23rd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2010), Portland, OR, September 2010, pp. 3244-3250.
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