论文部分内容阅读
根据John Berry的理论,基于特定平衡不平衡转换器的等效电路,建立测试场地的仿真模型,采用矩量法仿真计算场地衰减(SA)。将仿真计算的实际测试场地SA与理想测试场地SA的差值(ΔSA)作为修正值,用于修正实际场地的测量SA。分别仿真计算测试场地、控制室和避雷针3种影响因素单独存在和同时存在时的ΔSA。并将实际场地的仿真计算SA与测量SA进行比较。结果表明:这3种因素均对SA有影响;ΔSA的最大值达到0.74 dB;可将ΔSA用于对实际场地的测量SA的修正;仿真计算的实际场地SA结果与测量的结果基本吻合,验证了仿真计算方法的有效性。
According to the theory of John Berry, based on the equivalent circuit of a specific balun, a simulation model of the test site is established, and the field attenuation (SA) is calculated by the method of moment. The difference (ΔSA) between the actual test site SA and the ideal test site SA calculated by the simulation is used as a correction value to correct the measurement SA of the actual site. The ΔSA of three influencing factors such as test site, control room and lightning rod were separately calculated and calculated simultaneously. And the actual site of the simulation SA and measurement SA were compared. The results showed that all of these three factors had effects on SA; the maximum value of ΔSA reached 0.74 dB; ΔSA could be used to correct the measurement SA of the actual site; the simulated actual site SA results were in good agreement with the measured results, The effectiveness of simulation methods.