An approach to improving GNSS positioning accuracy using several GNSS devices

Jiménez Martínez, María Jesús and Farjas Abadía, Mercedes and Quesada Olmo, Nieves (2021). An approach to improving GNSS positioning accuracy using several GNSS devices. "Remote Sensing", v. 13 (n. 6); p. 1149. ISSN 2072-4292. https://doi.org/10.3390/rs13061149.

Description

Title: An approach to improving GNSS positioning accuracy using several GNSS devices
Author/s:
  • Jiménez Martínez, María Jesús
  • Farjas Abadía, Mercedes
  • Quesada Olmo, Nieves
Item Type: Article
Título de Revista/Publicación: Remote Sensing
Date: 17 March 2021
ISSN: 2072-4292
Volume: 13
Subjects:
Freetext Keywords: GNSS; Single point positioning; Bootstrapping; Smartphone; Mobile technology; Least squared; Geometric constraints
Faculty: E.T.S.I. en Topografía, Geodesia y Cartografía (UPM)
Department: Ingeniería Cartográfica y Topografía
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Single point positioning (SPP) mode, related to pseudorange measurements, limits the level of accuracy to several meters in open sky and to several dozens of meters in urban canyons. This paper explores the effect of using a large number of SPP observations from low-cost global navigation system (GNSS) receivers, smartphones, and handheld GNSS units. Data segmentation and bootstrapping statistical methods were used to obtain the deviation, which can describe the accuracy of the large sample. The empirical test recording data showed that the error may achieve a sub-meter horizontal accuracy by the simple process of increasing the measurements of smartphones and handheld GNSS units. However, the drawback is the long period of time required. To reduce the satellite tracking time, a least squares solution network was applied over all the recorded data, assisted by the external geometric conditions. The final goal was to obtain the absolute positioning and associated deviations of one vertex from three or five GNSS receivers positioned on a network. The process was tested in three geodetic network examples. The results indicated that the enhanced SPP mode was able to improve its accuracy. Errors of several meters were reduced to values close to 50 cm in 25–37 min periods.

Funding Projects

TypeCodeAcronymLeaderTitle
Madrid Regional GovernmentH2019/HUM-5742AVIPES-CMUnspecifiedArchivo Virtual para las Investigaciones sobre Patrimonios Epigráficos Medievales de la Comunidad de Madrid

More information

Item ID: 66616
DC Identifier: https://oa.upm.es/66616/
OAI Identifier: oai:oa.upm.es:66616
DOI: 10.3390/rs13061149
Official URL: https://www.mdpi.com/2072-4292/13/6/1149/htm
Deposited by: Memoria Investigacion
Deposited on: 27 Jan 2022 09:57
Last Modified: 27 Jan 2022 16:50
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