一种海洋蒸发波导通信带限信道建模方法  

A Bandwidth Channel Modeling Method for Sea Evaporation Duct Communication

作　　者：肖金光[1] 周新力[1] 张烨[1] 

机构地区：[1]海军航空工程学院电子信息工程系,山东烟台264001

出　　处：《电讯技术》2015年第2期135-140,共6页Telecommunication Engineering

摘　　要：针对海洋蒸发波导中多径信号场强计算和时延估计问题,提出了一种通信带限信道建模方法。给出了一种分段的射线追踪算法,提出了多径到达信号分离和场强计算的方法,考虑了电波空间扩散、粗糙海面反射和接收球;研究了时延估计规律、系统设计和使用策略。数值试验验证了建立的带限冲激响应建模方法的可行性,为海洋蒸发波导通信的链路预算和性能分析提供了有效的途径,通过控制信号频率、带宽和能量正余量可达到预期系统性能。To compute the field and estimate the time delay of multi-path signal in sea evaporation duct（SED）,a method of modeling communication bandwidth channel is presented. Algorithm of ray tracing insubsections is proposed. A method of separating arriving multi-path signal and computing field is put for-ward,considering space wave diffusion,rough surface reflection and reception sphere. Characteristics oftime delay estimation,system design and strategies of usage are studied. Feasibility of the constructed meth-od is verified by numerical experiments. The new method provides an effective way of link budget and per-formance analysis in SED communication to get expectable performances,with proper selection of signal fre-quency,bandwidth and energy surplus.

关 键 词：蒸发波导通信 射线追踪 多径信号 场强计算 带限信道模型 

分 类 号：TN011.3[电子电信—物理电子学]