Simulation case study of deformations and landslides using real-time GNSS precise point positioning technique. Issue 6 (1st November 2016)

• Record Type: Journal Article
• Authors: Capilla, Raquel M.; Berné, José Luis; Martín, Angel; Rodrigo, Raul
• Is Part Of: Geomatics, natural hazards & risk. Volume 7:Issue 6(2016)
• Page Start: 1856
• Page End: 1873
• Publication Date: 2016-11-01
• Subjects: Global Navigation Satellite Systems -- real-time -- precise point positioning -- landslides -- deformations; Geomatics -- Periodicals; Geomatics; Periodicals; 526.905
• DOI: 10.1080/19475705.2015.1137243
• Languages: English
• ISSNs: 1947-5705

Abstract

ABSTRACT: The precise point positioning (PPP) is a Global Navigation Satellite System (GNSS) computation technique that performs precise positioning using a single receiver. This is the main advantage over the traditional differential positioning for geodesy and geomatics which requires, at least, two receivers to get a precise position or a single receiver connected to a network of reference stations. The main goal of this work was to study the real-time PPP technique for deformation and landslides monitoring. A custom designed device was used for the simulation of landslides, and several test campaigns were performed at field. A control unit was designed based on open-source software and Python libraries implemented in this research. The conclusion of the study shows that real-time PPP allows solutions for deformation monitoring with mean offsets of 2 cm in north, east and up components, and standard deviations of 2 cm. It demonstrates the reliability of real-time PPP monitoring systems to detect deformations up to 5 cm of magnitude when the double constellation (GPS+GLONASS) was used. Finally, an improvement in the results with the recovery of fixed ambiguities in the PPP algorithms is outlined.