A New Methodology of Medium and Long Range BeiDou Triple-frequency Rapid Ambiguity Resolution

doi:10.13474/j.cnki.11-2246.2017.0113

Abstract

Abstract: Although TCAR can realize three short baseline frequency to achieve fuzzy degree of single epoch algorithm, due to the influence of ionospheric delay and observation noise, long baseline three frequency ambiguity fast calculating is still a big difficulty of navigation and positioning. This paper presents a new method without geometric ionosphere three frequency ambiguity calculating. The method based on pseudorange observation with different weights, auxiliary lane wide and narrow lanes can eliminate the influence of ionosphere residual, make wide lane and narrow lanes to solve only affected by the observation noise, and then through the epoch more smooth get wide lane and narrow lanes fuzzy degree of value. Through the measured frequency BDS three long baseline data shows that compared with the classical TCAR algorithm, this method can greatly improve the solving accuracy of long baseline ambiguity, data smoothing and verification can achieve fast calculating of long baseline ambiguity.

Key words: three frequency combination, TCAR/CAR, double difference ionospheric delay, no geometry and the ionosphere

CLC Number:

P228.4

WANG Pengxu, LÜ Zhiwei, YANG Dongsen, DENG Ke, YANG Guang. A New Methodology of Medium and Long Range BeiDou Triple-frequency Rapid Ambiguity Resolution[J]. 测绘通报, 2017, 0(4): 25-29.

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