Design Of AIS Information Simulator

As a navigation aid system,AIS plays a more and more important role in assisting VTS management,reducing the defects of the existing ship navigation,avoiding ship collision accidents,and improving the speed of searching and rescue ships in distress.However,because of the improper operation of the operator,ship information input is not correct,the information is tampered with or when the AIS transceiver far distance or interference due to electromagnetic environment and other external factors that reduce the transmission reliability,leading to other ships can not receive AIS information properly.The AIS information simulator can replace the real AIS device to realize the teaching practice.At the same time,it can avoid the interference of the real AIS device on the normal communication service of the surrounding ships.In addition,the reliability simulation module can simulate the required AIS data according to the needs,and provide technical data support for the development of AIS application system.Based on the detailed research on AIS target information,AIS serial data interface statement analysis and the theory of radio wave propagation in support of teaching practice and research for the purpose.Carried out the design scheme of the system and function analysis and give a specific solution.Then analyzed and determined the key technologies and main technical parameters of each module of the system.The method of simulating the generation,output and data storage of AIS data is studied,and the simulation method of the influence of propagation distance and electromagnetic environment on the reliability of data transmission is studied.Finally,the thesis designs the technology of this subject.First of all,using the MATLAB simulation software of AIS uniform linear motion,uniformly accelerated linear motion,uniform motor turning motion of three kinds of regular motion model was simulated and verified the feasibility of simulation method of ship AIS parameters.Then,the reliability of AIS information transmission under the influence of received distance and electromagnetic environment is simulated,and the simulation results and analysis are given.Finally,in the VC++6.0 development environment,information on the AIS simulator is programmed using the C++ programming language,including the man-machine interface,ship AIS parameter simulation module,database management module,serial data interface module module.