船舶监测网络异常节点定位技术研究

Research on location technology of abnormal node in ship monitoring network

网络节点在整个船舶监测网络中占有重要地位,异常节点可以破坏船舶监测网络的正常通信,影响船舶航行轨迹,埋下安全隐患。目前网络异常节点类型愈加复杂多样,传统的Amorphous技术已经难以准确定位,在覆盖率分析和精准度上经常出现很大的误差。本文提出一种新的船舶监测网络异常节点定位技术—APIT技术,定位过程分为接收节点信息、执行APIT测试、计算重叠区域和计算质心4步。由实验结果可知,较传统技术而言,APIT技术能够检测到更多类型的异常节点,精确性更好,为船舶安全航行提供有力的技术支撑。

Network nodes play an important role in the whole ship monitoring network. Abnormal nodes can destroy the normal communication of ship monitoring network, affect the navigation track of ships, and bury the hidden danger of safety. At present, the network anomaly node type is more complex and diverse, the traditional Amorphous technology is difficult to locate accurately, and there is a lot of error in the coverage analysis and precision. A new technique of locating the anomaly node of ship monitoring network, APIT technology, is proposed. The positioning process is divided into four steps, which are the receiving node information, the execution of APIT test, the calculation of overlapping regions and the calculation of the centroid. The experimental results show that, compared with the traditional technology, APIT technology can detect more types of abnormal nodes, and the accuracy is better, providing powerful technical support for the safe navigation of ships.