REFINEMENTS AND INTRODUCTION OF PHOTOGRAMMETRIC ELEMENTS TO AN EXPERIMENTAL TRILATERATION BASED OPTICAL METROLOGY SYSTEM
- 1National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW, UK
- 2Dept. of Geomatic Engineering, University College London, Gower Street, London, WC1E 6BT, UK
Keywords: Coordinate Metrology, Frequency Scanning Interferometry, Correspondence, Trilateration, Photogrammetry
Abstract. OPTIMUM is a novel optical coordinate measurement system designed to determine the location of omnidirectional targets within a large volume, the previous version of the system could determine the targets location with an uncertainty of 50 × 10−6 m. This paper describes some of the limitations of the original embodiment and changes being developed to address them. Version 2 of the system aims to solve the limitations of version 1 by integrating photogrammetric processes into the design and control processes of the system, along with redesigning the mechanical and optical relationships. The redesigned instrument will result in the ability to fully automate the initial calibration process and to allow for real-time processing of the measurement algorithms.