Parasitic modulation effect caused by dynamic plasma in low frequency

Author:

Gao Yuxuan1ORCID,Yang Min1ORCID,Xie Kai1,Qiao Longjie1ORCID,Liu Haoyan1ORCID,Li Chengguang1ORCID,Liu Donglin1ORCID,Quan Lei1,Wu Mingxing1,Li Xiaoping1

Affiliation:

1. School of Aerospace Science and Technology, Xidian University , Xi'an 710071, China

Abstract

Abstract-dynamic plasma sheath can severely interfere with the communication of hypersonic vehicles during atmospheric reentry. Theoretical and experimental results show that low-frequency (LF) electromagnetic (EM) waves could penetrate the plasma sheath, building a feasible method to solve the “radio blackout” problem. This paper discovers that the propagation of LF EM waves in plasmas is still influenced by parasitic modulation effects. Compared to microwave frequencies, the impact of parasitic modulation effects on signal modulation patterns is more distinct for LF EM waves. In contrast to the microwave frequency range, where the rotation direction of QPSK signal constellation points changes with the ratio of plasma frequency to electromagnetic wave frequency, in the LF range, the constellation points undergo limited clockwise rotation. This phenomenon can be attributed to the unique magnetic field propagation mechanism of LF EM waves in dynamic plasmas. This paper analyzes the mechanism of this specific parasitic modulation effect and discovers a sinusoidal transformation relationship between amplitude attenuation and phase shift. Meanwhile, the experimental and simulation results proved that the time-varying plasma could cause the parasitic modulation effect of LF EM wave, resulting in a limited clockwise rotation of orthogonal phase-shift keying constellation points, which is consistent with the theoretical analysis.

Funder

National Natural Science Foundation of China

Publisher

AIP Publishing

Reference33 articles.

1. The requirements and strategy analysis for TT&C of near space vehicles;Nat. Def. Sci. Technol.,2012

2. Review of blackout problems of near space hypersonic vehicles;J. Astronaut.,2018

3. Requirements and strategy analysis of TT&C used for ultrasonic speed aircraft,2010

4. E. D. Gillman , J. E.Foster, and I. M.Blankson, “ Review of leading approaches for mitigating hypersonic vehicle communications blackout and a method of ceramic particulate injection via cathode spot arcs for blackout mitigation,” Technical Report No. NASA/TM-2010-216220 (NASA, 2010).

5. Electromagnetic reduction of plasma density during atmospheric reentry and hypersonic flights;J. Spacecr. Rockets,2008

Cited by 1 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3