海上移动信道分析及抗多径接收机设计与仿真

海上舰船之间的通信通常工作在复杂的信道环境下,通信距离可远可近,不仅存在强的敌方恶意干扰,由于受地球弧度和海浪、船只等的遮挡,还存在深衰落和多径效应,因此设计海上通信系统时需要充分考虑这些不利因素的影响.针对海上移动信道的路径衰减特性,提出利用Longley-Rice模型建立海上移动信道模型,并对信道衰减模型进行了数值仿真;分析了多径对扩频系统伪码捕获的影响,提出利用Rake接收技术改善接收机的抗多径性能,并设计了一个Rake接收机结构,最后进行了仿真分析.仿真结果表明所设计的Rake接收机具有良好的抗多径能力,能够满足海上通信的需要.

Simulation of Offing Channel and Design of an Anti Multi-path Effect Receiver

The comunication among maritme formation ships is usually under complex channel conditions.The distance may be far or near,and not only strong interference may exist,but also bad decline and multipath effect.Because of the effect of earth radian,surf and ships,these negative factors should be considered sufficiently in designing a maritime formation communication system.Offing channel is analyzed,and then simulation of offing channel is carried out.Based on the performance analysis of PN code capture under ...