电波科学学报2023，Vol.38Issue(6)：1082-1089,8.DOI:10.12265/j.cjors.2022266
基于抛物方程法的对流层散射通信信道建模及分析
Modeling and analysis of tropospheric scattering communication channel based on parabolic equation method
摘要
Abstract
In order to analyze the influence of environmental on the performance of tropospheric scattering communication in practical application scenarios,a model of tropospheric scattering channel is established by using parabolic equation method and atmospheric turbulence model.Tropospheric scattering transmission loss and signal fast fading distribution are calculated,and the calculated results are in agreement with ITU model and theoretical fast fading distribution curve.On this basis,the bit error rate of the scattering channel under QPSK modulation is derived,and the electromagnetic modeling and simulation calculation of the scattering communication link under the actual propagation scenario are carried out,and the influence of different meteorological factors on the bit error rate is analyzed.The simulation results show that when the communication distance is long,the signal obeys Rayleigh distribution,and the environment has little influence on the bit error rate.As the communication distance becomes closer,the signal power from a scatterer path will be enhanced,and the signal may appear rice distribution.At this time,the bit error rate will fluctuate greatly with the change of environmental factors.When the communication distance is the same,the turbulent activity is strong in the high temperature and humid climate,and the radio transmission loss is small,which can achieve a better communication effect.关键词
对流层散射通信/抛物方程法/信道建模/误码率Key words
troposcatter communication/parabolic equation method/channel modeling/bit error rate分类
信息技术与安全科学引用本文复制引用
陈涛浪,冯菊,余洪鑫,廖成..基于抛物方程法的对流层散射通信信道建模及分析[J].电波科学学报,2023,38(6):1082-1089,8.基金项目
国家自然科学基金(62271416) （62271416）
四川省自然科学基金(2022NSFSC0494) （2022NSFSC0494）
