Abstract: The 3D visualization of guided navigation information provides a clear and intuitive scene for the crews, which is convenient for the crews to accurately judge and grasp the spatial location of ship, marine hydrological environment, direction of sailing and other important information. This paper analyzes the architecture of the entire 3D visualization system and researches on the key technology of the 3D visualization of guided navigation information. The paper achieves coordinate transformation from geographic coordinate system to the world coordinate system by Oblique Mercator projection, proposes a method to calculate the position and deflection angle of the beacon to indicate the location of anchorage and ship docked mode, displays dynamically guided navigation information by geometric object visualization. The experimental results show that the system can well solve the ship sailing retention problem caused by low visibility during the ship sails in fog, guiding the ship navigation and positioning.

Key words: guided navigation information, 3D visualization, fog navigation

摘要： 导助航信息的三维可视化为船员提供清晰、直观的画面，方便船员准确地判断和掌握船舶所处的空间位置、水文环境、行进方向等重要信息。分析了整个三维可视化系统的体系结构；对导助航信息三维可视化的关键技术进行了研究，通过斜墨卡托投影实现地理坐标系到世界坐标系的坐标转换；提出一种方法计算航标位置、偏转角度用以指示锚地位置、船舶停靠方式；通过几何对象可视化进行导助航信息的动态展示。实验结果表明，该系统能够很好地解决船舶雾天通航因能见度低所造成的滞航问题，引导船舶航行和定位。

关键词: 导助航信息, 三维可视化, 雾天通航