The embodiment of the invention provides an AIS abnormity early warning system and early warning method, and relates to the technical field of ship automatic identification. The system comprises a signal receiving module; the signal processing module is used for separating at least two AIS channel data from the radio signal and judging a starting point and an ending point of a time slot occupied by each AIS device based on occupation detection and time slot detection; the direction finding module is used for generating a demodulation request and a direction finding request when any AIS channel is occupied, and the demodulation module is used for responding to the demodulation request to obtain a first relative direction of the AIS equipment relative to a monitoring point; the direction finding module is used for responding to the direction finding request to obtain a second relative direction of the AIS equipment relative to the monitoring point; and the result display module is used for displaying the first relative direction, the second relative direction and early warning information when the deviation of the first relative direction or the second relative direction exceeds a preset deviation threshold value based on the electronic map. According to the implementation mode provided by the invention, false AIS equipment can be effectively identified.
本申请实施例提供了一种AIS异常预警系统及预警方法,涉及船舶自动识别技术领域。其中系统包括:信号接收模块;信号处理模块,用于从无线电信号中分离至少两个AIS信道数据,并基于占用检测和时隙检测,判断每个AIS设备占用时隙的起点与终点;在任意一个AIS信道被占用时,生成解调请求和测向请求,解调模块,用于响应于解调请求,得到AIS设备相对于监测点的第一相对方向;测向模块,用于响应于测向请求,得到所述AIS设备相对于所述监测点的第二相对方向;结果显示模块,用于基于电子地图显示:第一相对方向、第二相对方向、在第一相对方向或第二相对方向的偏差超出预设偏差阈值时的预警信息。本申请提供的实施方式能够有效识别虚假AIS设备。
AIS abnormity early warning system and early warning method
AIS异常预警系统及预警方法
2024-12-06
Patent
Electronic Resource
Chinese
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