摘要
甚低频通信受环境因素影响,其信道参数存在明显的时、空、频三维不均匀性,导致甚低频发信台对广阔的通信海区并不能满足在时间和空间上的无缝覆盖,易造成对潜指挥不畅。利用甚低频电波传播的可预测性,应用波导模式理论建立甚低频信道模型,对其信号场强进行预测,并进行了计算机仿真,仿真结果与实测数据吻合较好,表明利用该模型可实现通信效果的精确预报,从而提高对潜通信的效能。
The vlf communication,impacted by the environment,is of remarkable uniformity of channel parameters in time,space and frequency.It uses the predictability of the vlf very low frequence wave propagation,and applies the waveguide mode theory to establishing the math model and makes prediction of the signal field strength.The simulation fairly tally with the practical measurement data,and this indicates that this model is suitable for the accurate prediction of the communication effect,thus could enchance the efficiency of submarine communication.
出处
《通信技术》
2010年第6期41-42,46,共3页
Communications Technology
基金
军队重点预研基金(编号:6140426)
关键词
甚低频
信道模型
波导模式
场强
仿真
vlf
channel model
waveguide mode
field strength
simulation
