Non-uniform electron density estimation based on electromagnetic wave attenuation in plasma

作     者：Zhaoying Wang Lixin Guo Maixia Fu Shaoshuai Guo Yinsheng Li 王召迎;郭立新;付麦霞;郭韶帅;李寅生

作者机构：Key Laboratory of Grain Information Processing and Control(Henan University of Technology)Ministry of EducationZhengzhou 450001China College of Information Science and EngineeringHenan University of TechnologyZhengzhou 450001China School of PhysicsXidian UniversityXi’an 710071China 

出 版 物：《Chinese Physics B》 (中国物理B(英文版))

年 卷 期：2025年第34卷第1期

页      面：381-386页

核心收录：

学科分类：07[理学] 070204[理学-等离子体物理] 0702[理学-物理学] 

基　　金：Project supported by the Natural Science Foundation of Henan Province,China(Grant No.242300420634) the Cultivative Plan of Henan University of Technology(Grant No.2024PYJH035) the Research Foundation for Advanced Talents of Henan University of Technology(Grant Nos.2022BS067 and 2022BS068) the National Natural Science Foundation of China(Grant No.62301211) the Key Research and Development and Promotion Special Project(Science and Technology Research)in Henan Province,China(Grant No.232102211068) the Innovative Funds Plan of Henan University of Technology(Grant No.2022ZKCJ15) 

主　　题：attenuation electromagnetic propagation plasma electron density 

摘      要：The surface of a high-speed vehicle reentering the atmosphere is surrounded by plasma *** to the influence of the inhomogeneous flow field around the vehicle,understanding the electromagnetic properties of the plasma sheath can be *** the electron density of the plasma sheath is crucial for understanding and achieving plasma stealth of *** this work,the relationship between electromagnetic wave attenuation and electron density is deduced *** attenuation distribution along the propagation path is found to be proportional to the integral of the plasma electron *** result is used to predict the electron density ***,the average electron density is obtained using a back-propagation neural network ***,the spatial distribution of the electron density can be determined from the average electron density and the normalized derivative of attenuation with respect to the propagation *** to traditional probe measurement methods,the proposed approach not only improves efficiency but also preserves the integrity of the plasma environment.