Laser system for remote 3D registration and measurement of vibration and translational movements of objects

Abstract The article presents a physic-technical solution in which a laser interference-wedge-based system is implemented for remote optical registration and measurement from a distance of metres or tens of metres of mechanical vibrations and translations of objects in three perpendicular directions: horizontally along the X-axis, vertically along the Y-axis, and in the direction of the incident laser beam, along the Z-axis. This enables purely 3D measurement of the object, which can be separately measured in each of these directions. The measured vibrations and translations amplitude range from units of mm up to 10-15 cm on concrete structures, bridges, subways, buildings, and rocks.