Analysis of Angle Measurements and a New Approach to Vertical Angle Calibation
Journal Title: Geodesy and Cartography - Year 2011, Vol 37, Issue 4
Abstract
Testing and calibrating geodetic instruments is an important metrological procedure for precise instrumentation used in industry and geodesy. Electronic geodetic measuring instruments consist, among other elements, of circular scales and angular encoders for angle determination in two perpendicular horizontal and vertical planes. The accuracy of the instrument mostly depends on the accuracy of angle standards used for angle calibration in the horizontal plane. Although many methods are developed for angle calibration, the majority of those are not available for calibrating angles in the vertical plane. The method described in the International Standards of vertical angle calibration validates field testing geodetic instruments by taking precise angle readings between the calibrated points placed at long distance and height. Difficulties in creating such calibration basis and inconveniencies in proceeding with this field at long distances may appear. Also, the traceability of length and angle measurements is not ensured. The new method of calibrating the angles in the vertical plane for geodetic instruments was developed. The article describes the principle of indoor testing and the calibration of the vertical angle measuring system.
Authors and Affiliations
Lauryna Šiaudinytė, Mindaugas Rybokas, Vytautas Giniotis
Keywords
Related Articles
- EP ID EP86550
- DOI 10.3846/13921541.2011.645333
- Views 48
- Downloads 0
Atlas of Northeastern Yiddish: Importance of Maps in Linguistic Research
The paper introduces the application of cartographic methods to research on a culture at the last moment of its in situ existence. The atlas in progress seeks to determine the historic external borders, the internal diff...
Analysis of Angle Measurements and a New Approach to Vertical Angle Calibation
Testing and calibrating geodetic instruments is an important metrological procedure for precise instrumentation used in industry and geodesy. Electronic geodetic measuring instruments consist, among other elements, of ci...