Improved Scattering-Matrix Method and its Application to Analysis of Electromagnetic Wave Reflected by Reentry Plasma Sheath

Chen, Xuyang; Shen, Fangfang; Liu, Yanming; Ai, Wei; Li, Xiaoping

doi:10.1109/tps.2018.2823539

Cited by 25 publications

(11 citation statements)

References 39 publications

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“…The predicted electron density can vary dramatically from near the capsule's or airframe's surface to the surrounding plasma sheath to the region beyond as has been reported in a variety of works [24][25][26][27]. For our studies, an electron density of 10 18 m −3 was chosen as a reasonable intermediate value.…”

Section: Propagation Losses Through a Plasmamentioning

confidence: 93%

A Metamaterial-Inspired Approach to Mitigating Radio Frequency Blackout When a Plasma Forms Around a Reentry Vehicle

Webb

Ziolkowski

2020

Photonics

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Radio frequency (RF) blackout and attenuation have been observed during atmospheric reentry since the advent of space exploration. The effects range from severe attenuation to complete loss of communications and can last from 90 s to 10 min depending on the vehicle’s trajectory. This paper examines a way of using a metasurface to improve the performance of communications during reentry. The technique is viable at low plasma densities and matches a split-ring resonator (SRR)-based mu-negative (MNG) sheet to the epsilon-negative (ENG) plasma region. Considering the MNG metasurface as a window to the exterior of a reentry vehicle, its matched design yields high transmission of an electromagnetic plane wave through the resulting MNG-ENG metastructure into the region beyond it. A varactor-based SRR design facilitates tuning the MNG layer to ENG layers with different plasma densities. Both simple and Huygens dipole antennas beneath a matched metastructure are then employed to demonstrate the consequent realization of significant signal transmission through it into free space beyond the exterior ENG plasma layer.

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Section: Propagation Losses Through a Plasmamentioning

confidence: 93%

A Metamaterial-Inspired Approach to Mitigating Radio Frequency Blackout When a Plasma Forms Around a Reentry Vehicle

Webb

Ziolkowski

2020

Photonics

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“…proposed a kind of improved SMM based on the SMM (Chen et al. 2018). These works provide theoretical support for studying the propagation of terahertz waves in inhomogeneous plasma.…”

Section: Introductionmentioning

confidence: 99%

A study of the transmission characteristics of terahertz waves in hypersonic target flow field

Zhang

Han²,

Zhao³

et al. 2022

J. Plasma Phys.

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Based on the chemical reaction model proposed by Park, the ‘blackout’ of a reentry vehicle is studied in this paper. The temperature, pressure and electron density distribution characteristics around the reentry vehicle were simulated at various flight speeds and altitudes by USim. Subsequently, the scattering matrix method was used to study the transmission characteristics of terahertz waves in ‘blackout’. The simulation results show that the temperature around the aircraft is mainly affected by speed, the pressure is mainly affected by the altitude and electron density is affected by both of these factors. The calculation results show that the transmission characteristics of terahertz waves in plasma are mainly affected by electron density, while the effects of temperature and pressure cannot be ignored either.

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“…Communication may even be interrupted and result in losing the vehicle, which is referred to as a “blackout problem” [ 5 , 6 ]. To improve the communication performance during the re-entry process, many works on the propagation characteristics of electromagnetic (EM) waves in an inhomogeneous plasma sheath have been carried out and numerous achievements have been reported [ 7 , 8 , 9 ]. In addition, the materials of the reentry vehicle surface appear to be ablated as a result of the high temperature, which results in many ablative particles being produced [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

Study on the Propagation Characteristics of Terahertz Waves in Dusty Plasma with a Ceramic Substrate by the Scattering Matrix Method

Rao

Wang

et al. 2021

Sensors

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The propagation characteristics of terahertz (THz) waves incident vertically into inhomogeneous and collisional dusty plasma with a ceramic substrate are studied using the scattering matrix method (SMM). The effects of the incident wave frequency and plasma parameters, such as the maximal electron density, dust particle density, dust particle radius and collision frequency, on the reflectance and transmittance of THz waves in the dusty plasma are discussed. In addition, the differences of the propagation properties in the dusty plasma, with and without ceramic substrate, are analyzed. Meanwhile, the differences of the propagation properties in dusty plasma and common plasma, respectively, with ceramic substrate are also compared. Simulation results show that the substrate and dust particles have significant influence on the propagation characteristics of THz wave in plasma sheath. Finally, the transmission increases with the increase of electron density, dust density, dust particle radius and collision frequency.

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Improved Scattering-Matrix Method and its Application to Analysis of Electromagnetic Wave Reflected by Reentry Plasma Sheath

Cited by 25 publications

References 39 publications

A Metamaterial-Inspired Approach to Mitigating Radio Frequency Blackout When a Plasma Forms Around a Reentry Vehicle

A Metamaterial-Inspired Approach to Mitigating Radio Frequency Blackout When a Plasma Forms Around a Reentry Vehicle

A study of the transmission characteristics of terahertz waves in hypersonic target flow field

Study on the Propagation Characteristics of Terahertz Waves in Dusty Plasma with a Ceramic Substrate by the Scattering Matrix Method

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