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V/UHF频段在陆地和航空通信中已得到了广泛的应用。文章利用Matlab仿真平台,对自由空间中、平面大地视距路径与非视距路径上的传播损耗计算模型进行了仿真,分析得出了传播损耗与传播距离、通信频率等的关系;针对地空通信,对接收场强进行了仿真,分析得出了接收场强随发射功率、波长、通信距离、飞机高度和地面天线高度的变化关系。较为全面地仿真分析了V/UHF在陆地和地空通信中的传播特性,研究结果对V/UHF在陆地和地空通信中的应用具有一定的参考价值。
The V / UHF band has found wide application in terrestrial and aeronautical communications. In this paper, the simulation model of propagation loss in both horizon and non-line-of-sight paths in free space is simulated using Matlab simulation platform. The relationship between propagation loss and propagation distance and communication frequency is analyzed. Communication, the receiving field strength was simulated and the relationship between receiving field strength and transmitting power, wavelength, communication distance, aircraft height and ground antenna height was analyzed. The propagation characteristics of V / UHF in terrestrial and terrestrial communications are simulated and analyzed in a more comprehensive way. The research results have certain reference value for the application of V / UHF in terrestrial and terrestrial communications.