微波频段下对流层散射通信系统工作频率研究

Working Frequency of Troposcatter Communication System in Microwave Frequency Band

对流层散射通信由于具有单跳跨距远、抗核爆能力强、保密性高等特点,在军事上得到广泛应用。对流层散射通信的传输损耗较大,选择合适的工作频段对于减小传输损耗至关重要。基于国际电联(ITU)颁布的最新对流层散射损耗预测模型,补充了该模型中未考虑的影响损耗的若干因素,研究了传输损耗与工作频率、传播距离、天线口面直径等参数之间的关系。通过仿真验证,得出微波频段下散射通信系统工作频段的优选策略,可为对流层散射通信设备参数选择提供理论参考。

Troposcatter communication is widely used in military for its characteristics of long single jump span,strong capability of nuclear explosion resistance and high confidentiality.The transmission loss of troposcatter communication is relatively large,so choosing a suitable working frequency band is essential to reduce the transmission loss.Based on the latest troposcatter loss prediction model issued by ITU,several factors that affect loss which are considered in the model are added,and the relationship between transmission loss and parameters such as working frequency,transmission distance,and antenna aperture diameter,etc.,also explored.Simulation indicates that the optimal strategy for the working frequency band of the scattering communication system under the microwave frequency band is obtained,which can provide a theoretical reference for the parameter selection of troposcatter communication equipment.