Displacement monitoring performance of relative positioning and Precise Point Positioning (PPP) methods using simulation apparatus
MetadataShow full item record
Besides the classical geodetic methods, GPS (Global Positioning System) based positioning methods are widely used for monitoring crustal, structural, ground etc., deformations in recent years. Currently, two main GPS positioning methods are used: Relative and Precise Point Positioning (PPP) methods. It is crucial to know which amount of displacement can be detected with these two methods in order to inform their usability according to the types of deformation. Therefore, this study conducted to investigate horizontal and vertical displacement monitoring performance and capability of determining the direction of displacements of both methods using a developed displacement simulator apparatus. For this purpose, 20 simulated displacement tests were handled. Besides the 24 h data sets, 12 h, 8 h, 4 h and 2 h subsets were considered to examine the influence of short time spans. Each data sets were processed using GAMIT/GLOBK and GIPSY/OASIS scientific software for relative and PPP applications respectively and derived displacements were compared to the simulated (true) displacements. Then statistical significance test was applied. Results of the experiment show that using 24 h data sets, relative method can determine up to 6.0 mm horizontal displacement and 12.3 mm vertical displacement, while PPP method can detect 8.1 mm and 19.2 mm displacements in horizontal and vertical directions respectively. Minimum detected displacements are found to grow larger as time spans are shortened.
Showing items related by title, author, creator and subject.
The potential of GPS Precise Point Positioning method for point displacement monitoring: A case studyYigit, Cemal Ozer; Coskun, M.; Yavasoglu, H.; Arslan, A.; Kalkan, Y. (2016)© 2016 Elsevier Ltd. All rights reserved. Relative/network GPS/GNSS (Global Positioning System/Global Navigation Satellite System) positioning has been widely used to precisely measure both structural and crustal deformation ...
Determination of residual gas saturation and gas-water relative permeability in water-driven gas reservoirs.Mulyadi, Henny (2002)The research on Determination of Residual Gas Saturation and Gas-Water Relative Permeability in Water-Driven Gas Reservoirs is divided into four stages: literature research, core-flooding experiments, development and ...
The determination of interseismic, coseismic and postseismic deformations caused by the Gökçeada-Samothraki earthquake (2014, Mw: 6.9) based on GNSS dataTiryakioglu, I.; Yigit, Cemal Ozer; Yavasoglu, H.; Saka, M.; Alkan, R. (2017)© 2017 Elsevier Ltd Since the 1990s, seismic deformations have been commonly determined using the Global Navigation Satellite System (GNSS). Recently, the GNSS systems have become even more powerful with the use of new ...