Research on Dependency of Carrier Phase Biases on Correlator Spacing

Ye Wang, Lin Zhao, Shaohua Chen, and Yang Gao

Abstract:	Various biases exist in the Global Navigation Satellite System (GNSS) data. If not corrected, they will significantly degrade the performance of GNSS applications. The GNSS carrier phase bias problem has received great attention since GNSS multifrequency signals are widely used. The GNSS carrier phase biases, their magnitudes and properties, the processing methods used within the receivers. GNSS signals usually have chip shapes due to the transmitting and receiving side of the signal processing chain in the front-end RF filter. Differences in the chip shaping distortions between GNSS satellites induce individual carrier phase biases which must be corrected for certain applications, such as positioning with mixed signals or PPP ambiguity resolution.This paper has analyzed the dependency of carrier phase biases on different correlator spacings for GPS L1 and L2 signals in a dual-frequency software receiver. Our results show that the carrier phase biases variations are different for living signals and simulated signals with correlator spacing. This discovery can help to understand carrier phase bias inside receivers and has the potential to improve the fractional cycle bias estimation model and accuracy.
Published in:	Proceedings of the 31st International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2018) September 24 - 28, 2018 Hyatt Regency Miami Miami, Florida
Pages:	3821 - 3826
Cite this article:	Wang, Ye, Zhao, Lin, Chen, Shaohua, Gao, Yang, "Research on Dependency of Carrier Phase Biases on Correlator Spacing," Proceedings of the 31st International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2018), Miami, Florida, September 2018, pp. 3821-3826. https://doi.org/10.33012/2018.15995
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