Application of photogrammetric method for height measurement instrumentation

Abstract

The paper deals with the height measurement in-strumentation and means and methods for an accuracy assessment and calibration of levelling meters. New approach to height measurements is reviewed permitting to simplify the construction of digital levelling instruments and the levelling process itself. A photogrammetric method for accuracy calibration of levelling meters is described using the CCD sensors and correlation analysis for digital information processing. A problem discussed is valid for accuracy determination of levelling meters which are used for levelling the machines’ tables and the machines itself in the industry plant, in geodesy and building structure and can be applied for measurement of geometrical parameters of parts of the machines, length and angle standards.