基于短波车载三环天线的通信性能分析  

Analysis on Performance of HF Communication Circuit Based on Vehicular Three-loop Antenna

作　　者：李长勇[1] 胡中豫[1] 吴迪[1] 

机构地区：[1]重庆通信学院,重庆400035

出　　处：《无线电通信技术》2016年第2期59-62,共4页Radio Communications Technology

摘　　要：电离层特性对短波天波通信性能有较大影响,但研究短波天线运用对通信性能影响的文献很少。采用MMANA-GAL软件仿真分析了车载三环天线的性能参数,并结合短波通信链路性能分析软件(简称ITS软件)分析了车载三环天线与鞭天线不同运用时的通信性能比较,结果显示车载三环天线在低频端工作时,高仰角辐射差,大于10MHz后天波高仰角辐射增强,增益随着频率增大明显增大。通信性能分析可知,10 MHz工作时,车载三环天线的近距离(300 km内)通信时接收机可以有更高的信噪比,所以车载三环天线在近距离通信有更好的应用效果。In this paper,ITS software is used to analyze the performance of HF communication circuit when vehicular three-loop antenna and 10-meter whip antenna are used respectively. The result shows that the performance varies when different antennas are used. The three-loop antenna achieves high-elevation angle radiation under proper frequency,and obtains better signal-to-noise ratio（ SNR） in a distance between 50-300 km,so it has the advantage of overcoming the problem of HF communication blind areas. So,the result shows that the antenna can be selected for better communication performance.

关 键 词：车载三环天线 MMANA-GAL 天线方向性 ITS软件 信噪比 

分 类 号：TN924.2[电子电信—通信与信息系统]