基于AIS CLASS B标准的通信协议的设计

Design of Communication Protocol of AIS CLASS Based on B Standard

价格低廉的B类自动识别系统备受小型船舶青睐,以兼容AIS CLASS B标准的自动识别系统作为研究对象,设计了以CS-TDMA协议为依据的物流信息传输的协议部分。系统的AIS功能和其他种类的AIS设备功能基本相同,区别在于对时隙的占用和同步方式等方面。系统只有在确认自身发射信息所占用的时隙不会影响其他种类AIS设备通信的情况下才会发射信息,并且确认系统发射的信息不能超过一个标称时隙。

The cIass B automatic identification system is highIy favored by smaI ship due to its popuIar price.This paper designs the Iogistics information transmission protocoI based on CS-TDMA protocoI.With automatic identification system which is compatibIe with AIS CLASS B standards as the research object.AIS function in the system basicaI y has the same function with other types of equipment which containing AIS function.The difference Iies in the time sIot occupancy and the syn-chronization mode etc.