Automatic Identification System For Ships

With the rapid development of fishery economy,the demand for communication and navigation equipment by fishermen is unprecedented.The ship automatic identification system(AIS)can be used to launch the location information of the ship,automatically generate the navigation route,report whether the route is obstruct in real time,obtain the information of the fishing net,the weather alarm information and the security,and search and rescue information.It is of great significance to the safety of navigation in the sea and the production of the fishermen.This topic mainly completes the automatic identification system(AIS),the whole system is mainly divided into three parts,the receiver,the transmitter,and the digital modulation and demodulation related circuit.The receiver uses the classic heterodyne structure to realize high sensitivity and high selectivity receiver.The transmitter is sent to the modulation chip by the encoded data from the FPGA.The power requirement is controllable.This topic involves the basic knowledge of communication principle,communication electronic circuit,digital circuit and so on.It needs to master the use of microwave simulation software such as ADS,HFSS and so on.It is familiar with the use of PCB making software Autium Designer.Finally,it needs to be familiar with the use of radio frequency signal source,spectrum analyzer vector network analyzer.Debugging experience is also necessary.