星载AIS消息碰撞的MATLAB仿真  

MATLAB Simulation of Message Collision for Space-borne AIS

作　　者：邢通 李非凡 李春 王涛 

机构地区：[1]深圳航天东方红海特卫星有限公司,广东深圳518000

出　　处：《电讯技术》2014年第7期1006-1010,共5页Telecommunication Engineering

摘　　要：通过接收船舶自识别系统(AIS)广播消息,AIS卫星星座能够实现覆盖全球的船舶监视,但广播消息的时域碰撞将极大影响其性能指标。使用MATLAB模拟海上船只状态,对船舶自识别系统通信协议进行高度还原,研究星载AIS消息碰撞情况。仿真结果表明,在不同任务、不同条件下,星载AIS接收机天线均存在最优覆盖范围。仿真分析结果可为AIS微小卫星设计提供参考。Automatic Identification System（AIS） satellite constellation is able to monitor ships all around the world through receiving AIS message, but its performance is affected by message collision. This paper analyzes the message collision of AIS by simulating maritime AIS communication with MATLAB software. The result shows that under different requirements and conditions, there always exists optimal antenna coverage of space -borne AIS receiver. The simulation and analysis provide reference for microsatellite design.

关 键 词：星载AIS 自组织时分多址 消息碰撞 MATLAB仿真 微小卫星 

分 类 号：TN914.52[电子电信—通信与信息系统]