Analysis of two different smartphone pseudo-range smoothing methods

doi:10.13474/j.cnki.11-2246.2021.0001

Abstract

Abstract: Aiming at the problems that smartphones are limited by navigation chips and antenna receivers, the accuracy of pseudorange observations is not high, and there are many gross errors. This paper proposes to use the various measurements to detect double differences among epochs in order to find and remove the gross errors in the observed values, and then use the Doppler observations and carrier phase observations to smooth the pseudo-ranges. The reasons that affect the positioning accuracy of smartphones are analyzed from aspects. And the availability of carrier phase observations and Doppler observations for smoothing pseudoranges are explained. The experimental results show that the carrier phase smoothing pseudorange can effectively improve the positioning accuracy; the Doppler observation smoothing pseudorange positioning accuracy is related to the Doppler observations obtained by the navigation chip, and the MI8 Doppler observations have better accuracy than P30.

Key words: smartphone, Doppler, carrier phase, smoothing, accuracy analysis

CLC Number:

P228

XIAO Qinghuai, BEI Jinzhong, GU Shouzhou. Analysis of two different smartphone pseudo-range smoothing methods[J]. Bulletin of Surveying and Mapping, 2021, 0(1): 1-8.

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