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在农村中央广播电视节日无线覆盖工程工作中,由于更新改造的发射机较多,各台站地理环境差别较大,为了保证覆盖效果,必须对天线的辐射场型进行深入研究,严格求解天线在实际环境条件下辐射电磁场在空间分布的场型是根本不可能的。在实际工作中。我们用天线理论结合实际环境边界建立数学模型。利用计算机对天线场型进行处理,得到可视化结果。计算机仿真结果与实际测试结果基本吻合,在实际中发挥了很大的作用。
In the project of radio coverage of rural central radio and television festival, due to the large number of transmitters updated and renovated, the geographical environment of each station is quite different. In order to ensure the coverage effect, it is necessary to conduct an in-depth study of the antenna radiation patterns and strictly solve the problem of Under actual environmental conditions, it is impossible for the radiation electromagnetic field to be spatially distributed. In practical work. We use the antenna theory combined with the actual environmental boundary to establish a mathematical model. The use of computer antenna field processing, visualization results. Computer simulation results and the actual test results are basically consistent, in practice played a significant role.