Research Of Vortex-wave Antenna And Electromagnetic Environment Representation Technology

With the intelligent trend of the information society,a large number of mobile terminals and automation equipment are connected to the internet,and the demand for channel capacity is increasing day by day.How to make the best use of limited frequency band is a major challenge faced by wireless communication technology,new multiplexing technologies are urgently needed.However,the vortex electromagnetic wave with orbital angular momentum has great potential in the reuse technology,which is expected to solve the problem of the shortage of spectrum resources.How to generate vortex electromagnetic wave becomes the premise of beam reuse,so the design of orbital angular momentum array antenna becomes the hotspot of this research field.Based on the OAM circular array antenna and conformal antenna,a spherical conformal array antenna model which can generate orbital angular momentum is proposed.In theory and simulation,it is proved that the antenna model can generate vortex beams with different mode numbers and analyze the radiation characteristics.At the same time,under the background of the explosive increase in the number of networked devices brought about by the advancement of digital technology,the electromagnetic environment becomes more and more complex.Besides,the problem of electromagnetic environment deterioration is severe.Thus,an efficient environmental radiation monitoring method is necessary to ensure the quality of the electromagnetic environment.This paper analyzes the requirements of the electromagnetic environmental monitoring,puts forward the functional requirements of each part of the vehicle patrol system,and expounds the application scenarios of the vehicle patrol method.Aiming at the influence factors of vehicle patrol technology,the experiment scheme is established.A variety of research methods to study the factors,statistical analysis of the data.The conclusions about the technical requirements of the monitoring in the vehicle-carried survey method are drawn,which can provide technical reference and support for the popularization and standardization of the monitoring method.And in order to solve the problem of electromagnetic monitoring data discretization,shortage and missing caused by the condition limitation,the genetic BP neural network interpolation algorithm is proposed in this paper.The combination of electromagnetic radiation and spatial-geographic characteristics shows better results in the interpolation and prediction of environmental index values in large areas.Compared with other methods,it is proved that this method is more suitable for drawing electromagnetic map of radiation environment,and is an effective method of electromagnetic visualization.