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Open AccessArticle

Performance Analysis of Positioning Solution Using Low-Cost Single-Frequency U-Blox Receiver Based on Baseline Length Constraint

by Liguo Lu 1,2,3, Liye Ma 4, Tangting Wu 1 and Xiaoyong Chen 1,*
1
Faculty of Geomatics, East China University of Technology, Nanchang 330013, China
2
Xi’an Research Institute of Surveying and Mapping, Xi’an 710054, China
3
State Key Laboratory of Geo-information Engineering, Xi’an 710054, China
4
GNSS Research Center, Wuhan University, Wuhan 430079, China
*
Author to whom correspondence should be addressed.
Sensors 2019, 19(19), 4352; https://doi.org/10.3390/s19194352
Received: 21 August 2019 / Revised: 23 September 2019 / Accepted: 4 October 2019 / Published: 8 October 2019
(This article belongs to the Section Remote Sensors, Control, and Telemetry)
With the rapid development of the satellite navigation industry, low-cost and high-precision Global Navigation Satellite System (GNSS) positioning has recently become a research hotspot. The traditional application of GNSS may be further extended thanks to the low cost of measuring instruments, but effective methods are also desperately needed due to the low quality of the data obtained using these instruments. Thus, in this paper, we propose the analysis and evaluation of the ambiguity fixed-rate and positioning accuracy of single-frequency Global Positioning System (GPS) and BeiDou Navigation Satellite System (BDS) data, collected from a low-cost u-blox receiver, based on the Constrained LAMBDA (CLAMBDA) method with a baseline length constraint, instead of the classical LAMBDA method. Three sets of experiments in different observation environments, including two sets of static short-baseline experiments and a set of dynamic vehicle experiments, are adopted in this paper. The experiment results show that, compared to classical LAMBDA method, the CLAMBDA method can significantly improve the success rate of the GNSS ambiguity resolution. When the ambiguity is fixed correctly, the baseline solution accuracy reaches 0.5 and 1 cm in a static scenario, and 1 and 2 cm on a dynamic platform. View Full-Text
Keywords: baseline length constraint; u-blox receiver; ambiguity resolution; positioning accuracy baseline length constraint; u-blox receiver; ambiguity resolution; positioning accuracy
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Lu, L.; Ma, L.; Wu, T.; Chen, X. Performance Analysis of Positioning Solution Using Low-Cost Single-Frequency U-Blox Receiver Based on Baseline Length Constraint. Sensors 2019, 19, 4352.

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