Minimal Detectable Displacement Achievable by GPS-RTK in CZEPOS Network

Raška, Martin; Pospíšil, Jiří

doi:10.14311/gi.14.1.2

Cited by 2 publications

(2 citation statements)

References 4 publications

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“…Others based their EUPOS Geodetic subservice on their own computational algorithms (e.g., Active Geodetic Network-EUPOS [ASG-EUPOS] in Poland). Accuracies possible thanks to real-time corrections in individual national positioning systems have been studied extensively [6][7][8][9][10][11]. Still, there are no publications on the determination of the accuracy, precision, and repeatability of the solutions offered by the APPS sub-services in individual national systems.…”

Section: Introductionmentioning

confidence: 99%

Validation of the number of tie vectors in post-processing using the method of frequency in a centric cube

Kudas

Wnęk

2020

Open Geosciences

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AbstractThe systems belonging to the European Position Determination System (EUPOS) are obliged to have a sub-service for automatic post-processing (APPS) of static satellite user observations based on observations registered by reference stations. The optimization of the number of tie vectors to reference stations is determined by the authors of APPS algorithms and is a key issue. The study validates the determination of the position of a point based on a smaller number of tie vectors than for the standard solution provided by a sub-service on an example of APPS of the Polish Active Geodetic Network (ASG-EUPOS). It was shown that the reduction of the number of tie vectors by one does not result in a significant deterioration of the accuracy of the obtained coordinates. The other objective of this study is to propose a method for comparing 3D sets. This method is based on 3D figures of assessment and a modification of a method for comparing text sets. The proposed method was validated by comparison with the Spearman correlation coefficient and Mahalanobis distance. The usefulness of the method for similarity and dissimilarity analyses of 3D sets has been demonstrated with an example of comparing the combination of reference vectors with a standard solution of APPS of ASG-EUPOS.

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Section: Introductionmentioning

confidence: 99%

Validation of the number of tie vectors in post-processing using the method of frequency in a centric cube

Kudas

Wnęk

2020

Open Geosciences

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“…Frequently used geodetic methods for deformation measurements are trigonometric method as a part of geodetic network [18], geometric levelling [2], 3D scanning [11,16] and an interesting application described in [12] and in [15], photogrammetry [13,7], GNSS [17], and by combination of these methods and processing it altogether by adjustment.…”

Section: Introductionmentioning

confidence: 99%

Accurate Measurement of the Riverbed Model for Deformation Analysis using Laser Scanning Technology

Štroner¹,

Urban²,

Křemen³

et al. 2018

Geoinformatics FCE CTU

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<p>This paper presents an interesting application of the riverbed model shape and deformations monitoring using laser scanning technology and accurate local micro-network. The most interesting fact about this application is very high accuracy demand on deformation determination (maximum permissible error is only 2 mm) within quite large object (the size of the riverbed model is about 100 meters). Up to now, mechanical calipers in the selected profiles were used to detect the changes. This manual approach is very laborious and time-consuming and the gathered data resolution and accuracy is often not sufficient. The suggested solution contains two main parts. The first part deals with construction of highly accurate local micro-network for laser scanning needs (maximum required standard deviation in any coordinate is lower than 0.4 mm) and the second part deals with actual laser scanning and data processing. Design, measurement and processing of the experiment was conducted for the needs of the research project “Improvement of navigation conditions on the Elbe between Ústí nad Labem - state border CR / FRG - Navigation Step Děčín”. The main goal of this project is design and realization of the river regulation to improve the navigation conditions. The key benefit of using river model is the possibility to easily simulate various catastrophic scenarios (various degrees of the floods) and their impacts on riverbed changes.</p>

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Minimal Detectable Displacement Achievable by GPS-RTK in CZEPOS Network

Cited by 2 publications

References 4 publications

Validation of the number of tie vectors in post-processing using the method of frequency in a centric cube

Validation of the number of tie vectors in post-processing using the method of frequency in a centric cube

Accurate Measurement of the Riverbed Model for Deformation Analysis using Laser Scanning Technology

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