The influence of pillar displacements on geodetic measurements

Močnik, Robert (author), Koler, Božo (author), Zupan, Dejan (author), Ambrožič, Tomaž (author)

This paper deals with the effects that displacements of the measuring pillar have on precise geodetic measurements. The changes in the position of the control points on the object or its surroundings can only be determined with well stabilized and stable reference points. These points are usually stabilized with measuring pillars which are not always constructed in an optimal manner. If they are placed in a dark tube with a high absorption factor, solar heating on one side of the pillar can cause the pillar to deflect considerably due to the temperature difference on the two sides of the pillar. This paper presents the influence of such a displacement, if the pillar is a survey point, orientation point, or control point. We show that even small displacement of the survey point can have important influence on all measurements and that the error in some cases significantly increases, e.g., if the standard deviations of the coordinates of the survey point are 1 mm and their covariance is assumed to be zero, the standard deviation of the distance between measured and exact position of the control point exceeds the value of 2.2 mm.

• Language: English
• Keywords: geodesy, influence of temperature, deflection of the measuring pillar, displacement of the measuring pillar, control measurements
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FGG - Faculty of Civil and Geodetic Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2020
• Number of pages: 15 str.
• Numbering: Vol. 10, iss. 23, art. 8319
• PID: 20.500.12556/RUL-124726
• UDC: 528
• ISSN on article: 2076-3417
• DOI: 10.3390/app10238319
• COBISS.SI-ID: 41244419
• Publication date in RUL: 12.02.2021

Record is a part of a journal

• Title: Applied sciences
• Shortened title: Appl. sci.
• Publisher: MDPI
• ISSN: 2076-3417
• COBISS.SI-ID: 522979353

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
• Licensing start date: 01.12.2020

Secondary language

• Language: Slovenian
• Keywords: geodezija, vpliv temperature, deformacija stebra, premik stebra, kontrolne meritve