船舶自动识别系统（AIS）VHF接收机的设计

VHF接收机是船载自动识别系统(AIS)的关键部件之一,其性能直接影响到AIS系统自组织组网的优劣、接收船舶的数目多少及所能接收到最远船只的距离远近。本文根据国际海事组织(IMO)有关标准,给出了一种船舶自动识别系统中VHF接收机的设计方案。文中简介了接收机的工作原理,给出了基于MAX2306的VHF接收机的硬件和软件设计。实验测试和实际应用表明该接收机的接收灵敏度、邻信道选择性等都已达到规定的要求,并且该接收机结构简单、性能稳定,易于批量化生产。

Design of VHF receiver of automatic identification system

The VHF receiver is the key module of shipborne automatic identification system ( AIS ) and decides the performance of the self-organized network,the quantity and the distance of ships whose signals can be received by the AIS.To put forward a plan for VHF receiver of AIS according to the Standards of international maritime organization (IMO).Besides,it introduces briefly the working principle of the receiver and gives the hardware and software designs of the VHF receiver based on MAX2306.The testing and running for the receiver shows that its sensitivity and adjacent channel selectivity could meet the requirements of IMO.Furthermore,the receiver is stabile,and its structure is simple suitable for mass production.