An electro-optical system for transverse displacement measurement with rotation parameters estimation of the measurement unit

摘要

This paper describes the development of a transverse deflection measuring system for floating dry docks. Thesystem consists of a set of reference marks and a measurement unit. When the measurement is performed inoutside for the inspection of real structures, the influence of external conditions can lead to change the position andthe direction of a measurement unit. In this case, the deflection of the object cannot be measured because the effectof the camera movement is included in the measured deflection. The aim of the work is to analyze and estimate therotation parameters of the measurement unit relative to an arbitrary axis. The result of the estimation rotationparameters can be used to compensate the error caused by the rotation of the measurement unit in the developmentof electro-optical system for transverse deflection measuring system for floating dry docks.