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Determining Temperature Dependence of Collimation Error of Digital Level Leica DNA 03 (4993)

Jelena Gučević, Siniša Delčev and Vukan Ogrizović (Serbia)
Dr. Siniša Delčev
Assistant Professor
Faculty of Civil Engineering
Department of Geodesy and Geoinformatics
Bulevar kralja Aleksandra 73
Belgrade
11000
Serbia
 
Corresponding author Dr. Siniša Delčev (email: delcev[at]grf.bg.ac.rs, tel.: + 381 113218542)
 

[ abstract ] [ paper ] [ handouts ]

Published on the web 2011-02-10
Received 2010-11-22 / Accepted 2011-02-10
This paper is one of selection of papers published for the FIG Working Week 2011 in Marrakech, Morocco and has undergone the FIG Peer Review Process.

FIG Working Week 2011
ISBN 978-87-90907-92-1 ISSN 2307-4086
http://www.fig.net/resources/proceedings/fig_proceedings/fig2011/index.htm

Abstract

The appearance of digital levels has enabled geodetic professionals the high automation in the process of levelling, which has significantly shortened the field work. As with conventional levels, it should be examined and its metrological characteristics should be determined. One of the important characteristics is the horizontal line of sight. For this purpose, digital levels use compensators of different construction and accuracy. Like the classical one, the digital level is used in various temperature conditions. It is therefore of crucial interest to determine how the position of the line of sight in relation to the horizon is changed, i.e. how the collimation error is modified with the change in temperature. This paper describes an experiment which determines the change of collimation error with the change of temperature at high precision digital level Leica DNA 03.
 
Keywords: Positioning; metrology

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