Hull Vertical Deformation Measurement by Photogrammetry

Abstract

Due to the lack of real-time effective measurement means, the attitude changes from shipboard measuring equipment to the three-axis center of the base always been replaced by the method of strengthening the strength of the supporting barrel wall of the equipment. In the actual data processing, the equipment base and the triaxial center are regarded as a rigid body, without considering the attitude changes between each other, which will inevitably have a certain impact on the measurement accuracy. Based on the characteristics of high accuracy, light weight and small volume of the hull deformation photography measurement method, the attitude change measurement between the three axis center and the base of the measuring equipment is realized by designing the measurement scheme. The dynamic test at sea is carried out and the test results are analyzed. The experimental results show that the method of photographic measurement of the attitude change between the equipment base and the three-axis center.