星载AIS接收系统设计及关键技术  

Satellite-based AIS Receiver System Design and Related Key Techniques

作　　者：潘宝凤[1] 梁先明[1] 

机构地区：[1]中国西南电子技术研究所,成都610036

出　　处：《电讯技术》2011年第5期1-5,共5页Telecommunication Engineering

摘　　要：针对星载AIS(船舶自动识别系统)接收系统覆盖范围广、运动速度快等特点,提出了三种实现信号有效接收的总体方案。采用盲分离阵列信号处理方法、非线性测频和非相干解调方法解决了星载AIS接收系统中面临的信号碰撞、多普勒频移信号解调等关键技术问题,仿真和外场实验验证了方案的有效性和可行性。According to the characters of the space - based AIS （Automatic Identification System） receiver with wide coverage and fast moving speed, three system design schemes are proposed to realize the efficient receiving of signal. The blind source separation array signal processing method, nonlinear frequency measuring and non - coherence demodulation method are used to solve the problems of signal overlapping and the demodulation of Doppler frequency shift signal. Simulations and outfield experiment are presented to verify the validity and feasibility of the proposed scheme.

关 键 词：星载AIS 接收系统 信息碰撞 多普勒频移 盲源分离 

分 类 号：TN971[电子电信—信号与信息处理]