当前位置: X-MOL 学术Wirel. Commun. Mob. Comput. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
A Study on the Diffraction Correction Prediction of Electromagnetic Field Intensity Based on the Method of Estimating Aerial Access Network Signal
Wireless Communications and Mobile Computing ( IF 2.146 ) Pub Date : 2021-09-13 , DOI: 10.1155/2021/8136833
Jialuan He 1, 2 , Zirui Xing 2 , Qiang Wang 2 , Feihong Wu 2 , Fuyong Lu 3
Affiliation  

Field strength is a typical indicator of air access network signals, and the prediction of field strength has important reference significance for the estimation of aerial access network signals. However, many factors affecting the field strength, such as path, terrain, sunshine, and climate, increase the computational complexity, which greatly increases the difficulty of establishing an accurate prediction system. After persistent research by researchers in recent years, the ITU-R P.1546 model has gradually become a point-to-surface forecasting method for ground services recommended by ITU for ground operations in the frequency range of 30 MHz~3000 MHz. In view of the characteristics of electromagnetic signal propagation in mountainous environment, the influence of diffraction is also considered in this paper. Based on more accurate scene information such as actual terrain, the prediction calculation of electromagnetic signal propagation in a mountainous environment is proposed by using the corrected ITU-R P.1546 model. In addition, the influence of the actual terrain is taken into account to correct the relevant parameters, and the predicted results are compared with the measured data. The results indicate that field strength prediction results of the ITU-R P.1546 model based on the diffraction effect correction proposed in this paper in specific physical areas have better performance than those of the traditional ITU-R P.1546 model. Among them, the determination coefficient between the measured data and the predicted results is 0.87, the average error is 5.097 dBμV/m, and the root mean square error is 6.6228 dBμV/m, which proves that the ITU-R P.1546 model based on the corrected model is effective in the prediction of electromagnetic field intensity in the actual mountainous environment.

中文翻译:

基于天线接入网信号估计方法的电磁场强度衍射校正预测研究

场强是空中接入网信号的典型指标,场强的预测对于空中接入网信号的估计具有重要的参考意义。然而,影响场强的因素很多,如路径、地形、日照、气候等,增加了计算复杂度,大大增加了建立准确预测系统的难度。经过近年来研究人员的不断研究,ITU-R P.1546模型逐渐成为ITU推荐的地面业务在30 MHz~3000 MHz频率范围内进行地面业务的点对地预报方法。针对山区环境中电磁信号传播的特点,本文还考虑了绕射的影响。基于更准确的实际地形等场景信息,利用修正后的ITU-R P.1546模型,提出了山区环境中电磁信号传播的预测计算。此外,还考虑了实际地形的影响,对相关参数进行修正,并将预测结果与实测数据进行比较。结果表明,基于本文提出的衍射效应校正的ITU-R P.1546模型在特定物理区域的场强预测结果比传统的ITU-R P.1546模型具有更好的性能。其中,实测数据与预测结果的判定系数为0.87,平均误差为5.097 dB 利用修正后的ITU-R P.1546模型,提出了山区环境中电磁信号传播的预测计算。此外,还考虑了实际地形的影响,对相关参数进行修正,并将预测结果与实测数据进行比较。结果表明,基于本文提出的衍射效应校正的ITU-R P.1546模型在特定物理区域的场强预测结果比传统的ITU-R P.1546模型具有更好的性能。其中,实测数据与预测结果的判定系数为0.87,平均误差为5.097 dB 利用修正后的ITU-R P.1546模型,提出了山区环境中电磁信号传播的预测计算。此外,还考虑了实际地形的影响,对相关参数进行修正,并将预测结果与实测数据进行比较。结果表明,基于本文提出的衍射效应校正的ITU-R P.1546模型在特定物理区域的场强预测结果比传统的ITU-R P.1546模型具有更好的性能。其中,实测数据与预测结果的判定系数为0.87,平均误差为5.097 dB 考虑实际地形的影响对相关参数进行修正,并将预测结果与实测数据进行比较。结果表明,基于本文提出的衍射效应校正的ITU-R P.1546模型在特定物理区域的场强预测结果比传统的ITU-R P.1546模型具有更好的性能。其中,实测数据与预测结果的判定系数为0.87,平均误差为5.097 dB 考虑实际地形的影响对相关参数进行修正,并将预测结果与实测数据进行比较。结果表明,基于本文提出的衍射效应校正的ITU-R P.1546模型在特定物理区域的场强预测结果比传统的ITU-R P.1546模型具有更好的性能。其中,实测数据与预测结果的判定系数为0.87,平均误差为5.097 dB 基于本文提出的衍射效应校正的1546模型在特定物理区域具有比传统ITU-R P.1546模型更好的性能。其中,实测数据与预测结果的判定系数为0.87,平均误差为5.097 dB 基于本文提出的衍射效应校正的1546模型在特定物理区域具有比传统ITU-R P.1546模型更好的性能。其中,实测数据与预测结果的判定系数为0.87,平均误差为5.097 dBμ V/m,均方根误差为6.6228 dB μ V/m,证明基于修正模型的ITU-R P.1546模型在实际山地环境中的电磁场强度预测中是有效的。
更新日期:2021-09-13
down
wechat
bug