The invention discloses an AIS (Automatic Identification System)-based ship anti-collision early warning method, which comprises the following steps of: receiving high-precision information such as course, navigational speed, coordinates and the like of a ship and a target ship of an AIS, performing spherical calculation on a distance between two points, a direction angle of the target ship and a relative course angle instead of plane calculation so as to calculate CPA, and performing parameter correction on a high-latitude coordinate so as to obtain an anti-collision early warning result. According to the method, the high latitude deviation is corrected, the accuracy and precision of the CPA calculation result are improved, the ship is endowed with the corresponding safety area, the position relation between the target ship and the safety area under the condition of the relative navigational speed vector is analyzed through visual conversion, early warning can be visually given out for collision, and compared with the prior art, the method has remarkable technical progress.
本发明公开了一种基于AIS的船舶防撞预警方法,本发明通过接收AIS的本船和目标船的航向、航速、坐标等高精度的信息,不采用平面计算而是对两点距离、目标船方向角、相对航向角采用球面计算,从而算出CPA,并对于高纬度坐标使用参数修正,以校正高纬度的偏差,提高了CPA计算结果的准确性和精度,并给本船赋予相应的安全区域,通过可视化的转化,分析目标船在相对航速向量的条件下与安全区域的位置关系,可直观地对碰撞发出预警,相对于现有技术具有显著的技术进步。
Ship anti-collision early warning method based on AIS
一种基于AIS的船舶防撞预警方法
2024-06-28
Patent
Electronic Resource
Chinese
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