Determination of Point Displacements in the Geodetic Network
Savšek, Simona (Author), Ambrožič, Tomaž (Author), Stopar, Bojan (Author), Turk, Goran (Author)

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This paper describes the procedure for testing the statistical significance of point displacements in the geodetic network as the intermediate stage between the adjustment of respective epochs measurements and an in-depth deformation analysis. The cumulative distribution function of the test statistic, presenting the relation between the displacement and the displacement accuracy, is determined by simulations. On the basis of this cumulative distribution function a critical value of the test statistic for a selected significance level is determined. In the null hypothesis it is assumed that the point is stable. A comparison of the critical value to the test statistic value is made and the actual risk level for rejecting the null hypothesis is estimated. Further on, a practical example of implementing the test in a simulated network is given. The test statistic proved to be simple and applicable: The points with significant displacements were identified successfully.

Keywords:deformation analysis, simulations, hypothesis testing, significant displacements
Tipology:1.01 - Original Scientific Article
Organization:FGG - Faculty of Civil and Geodetic Engineering
Publisher:American Society of Civil Engineers
Number of pages:Str. 58-63
Numbering:Letn. 132, Št. 2
ISSN on article:0733-9453
DOI:10.1061/(ASCE)0733-9453(2006)132:2(58) This link opens in a new window
COBISS.SI-ID:3112033 This link opens in a new window
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Record is a part of a journal

Title:Journal of surveying engineering
Shortened title:J. surv. eng.
Publisher:American Society of Civil Engineers
COBISS.SI-ID:7016453 This link opens in a new window

Secondary language

Keywords:deformacijska analiza, simulacije, testiranje hipotez, značilni premiki

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