Calibration of Field Length Baselines Using Leica AT401 Laser Tracker

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F17%3A00312795" target="_blank" >RIV/68407700:21110/17:00312795 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.5593/sgem2017/22/S09.018" target="_blank" >http://dx.doi.org/10.5593/sgem2017/22/S09.018</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5593/sgem2017/22/S09.018" target="_blank" >10.5593/sgem2017/22/S09.018</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Calibration of Field Length Baselines Using Leica AT401 Laser Tracker

Popis výsledku v původním jazyce

The paper reveals proposed techniques and measurement results obtained by employing Leica AT401 laser tracker into processes of calibration of field length geodetic baselines. Firstly, testing of the available laser tracker in Research Institute of Geodesy, Topography and Cartography (RIGTC) is shortly introduced and the development of a user-programmed software ATControl is presented. Secondly, measurement methodologies used for calibrating Czech State Long Distances Meausuring Standard Koštice and National Geodetic Baseline Hvězda are outlined. Finally, results from 20 epochs from Koštice baseline and 6 epochs from Hvězda baseline are evaluated. Leica AT401 proved to be a useable tool for calibrating field length baselines even if many problems with automated target recognition and measuring range occurred. Scale accuracy of the calibration was mainly dependent on temperature gradients and additive constant on the long-term stability of baseline’s points. Accuracy expressed as a standard deviations varied about (0.4-0.6) mm + 0.34 mm/km for both baselines. EURAMET’s research project “Absolute Long Distance Measurement in Air” describes needs for development in this field. Employing laser tracker instruments is one of the new ways how to conventionally maintain field length baselines around the world. Reached accuracy is comparable to outputs of methodology used by Finnish Geospatial Research Institute (FGI) but the whole process with laser tracker Leica AT401 is significantly easier and faster comparing to traditional scale transfers with Kern Mekometer ME5000.

Název v anglickém jazyce

Calibration of Field Length Baselines Using Leica AT401 Laser Tracker

Popis výsledku anglicky

The paper reveals proposed techniques and measurement results obtained by employing Leica AT401 laser tracker into processes of calibration of field length geodetic baselines. Firstly, testing of the available laser tracker in Research Institute of Geodesy, Topography and Cartography (RIGTC) is shortly introduced and the development of a user-programmed software ATControl is presented. Secondly, measurement methodologies used for calibrating Czech State Long Distances Meausuring Standard Koštice and National Geodetic Baseline Hvězda are outlined. Finally, results from 20 epochs from Koštice baseline and 6 epochs from Hvězda baseline are evaluated. Leica AT401 proved to be a useable tool for calibrating field length baselines even if many problems with automated target recognition and measuring range occurred. Scale accuracy of the calibration was mainly dependent on temperature gradients and additive constant on the long-term stability of baseline’s points. Accuracy expressed as a standard deviations varied about (0.4-0.6) mm + 0.34 mm/km for both baselines. EURAMET’s research project “Absolute Long Distance Measurement in Air” describes needs for development in this field. Employing laser tracker instruments is one of the new ways how to conventionally maintain field length baselines around the world. Reached accuracy is comparable to outputs of methodology used by Finnish Geospatial Research Institute (FGI) but the whole process with laser tracker Leica AT401 is significantly easier and faster comparing to traditional scale transfers with Kern Mekometer ME5000.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10500 - Earth and related environmental sciences

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

17th International Multidisciplinary Scientific Geoconference, Conference Proceedings Volume 17, Informatics, Geoinformatics and Remote Sensing Issue 22, Geodesy and Mine Surveying

ISBN

978-619-7408-02-7

ISSN

1314-2704

e-ISSN

—

Počet stran výsledku

8

Strana od-do

139-146

Název nakladatele

International Multidisciplinary Scientific GeoConference SGEM

Místo vydání

Sofia

Místo konání akce

Albena

Datum konání akce

27. 6. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—