Precise measurement system and measurement method for space position between two ships

Abstract

The precise measurement system and measurement method for the spatial position between two ships belong to the field of optical measurement technology. In order to realize the spatial position measurement when the ship sails normally under certain sea conditions, the measurement equipment is divided into two parts: the measurement system and the cooperative target, which are respectively installed in two parts. On the ship; the measurement system is installed at the fixed installation point of the survey ship, and the cooperative target is installed at the fixed installation point of the measured ship; the cooperative target is installed on the target ship, including two parts: the reflective surface and the tracking target. The reflective surface has a metal plate with high reflectivity. It is used as a reflective surface for laser ranging; the tracking target is four luminous target points, and the center point is obtained by fitting the four points as the tracking center; the measurement target captures, locks the tracking center point P for tracking, and outputs the measurement in real time Azimuth α and pitch angle β; measurement data acquisition, the laser ranging sensor performs laser ranging on the target, and collects the ranging value L; the attitude measurement sensor performs attitude measurement on the hull itself; measurement data processing.

Description

technical field [0001] The invention relates to an accurate measurement system and a measurement method for the spatial position between two ships, belonging to the technical field of optical measurement. Background technique [0002] With the increasing frequency of maritime navigation activities in our country, especially the increase in ocean navigation activities, due to the long voyage of ships, it is necessary to replenish resources such as fuel and fresh water in a timely manner. In the supplementary process, it is necessary to measure the relative position between the two ships. In addition, in the construction process of some ships, it is necessary to measure and calibrate the motion characteristics of the ship, which requires measuring the relative position between the ship sailing near the dock and the fixed detection surface of the dock. These measurements will help the calibration of the ship Construction and performance testing. [0003] For the two ships in ...

AI Technical Summary

Problems solved by technology

The difficulty of the measurement process is that the two ships are far apart and their positions are not fixed. The target needs to be searched and identified before the measurement; in addition, because the measurement ship itself is shaken by the influence of sea conditions, the measurement reference is moving, and the measurement process needs to be compensated for.

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