A Geometric-Stochastic Integrated Channel Model for Hypersonic Vehicle: A Physical Perspective

Yao, Bo; Li, Xiaoping; Shi, Lei; Liu, Yanming; Zhu, Congying

doi:10.1109/tvt.2019.2902962

Cited by 27 publications

(8 citation statements)

References 29 publications

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“…The fluctuation coefficient is a random variable and there is no explicit mathematical expression in the time domain. From the stochastic aspect, the probability density function (pdf) of is Gaussian and the mathematical form can be written as [20]…”

Section: A Space-time-varying Electron Density Modelmentioning

confidence: 99%

Spatial Selectivity of Plasma Sheath Channel at Millimeter Wave Band for Hypersonic Vehicle

Yao

Shi

et al. 2022

IEEE Trans. Plasma Sci.

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Millimeter wave is a potential way to overcome the blackout problem. However, the plasma sheath is axially nonuniform, and it has different effects on millimeter wave at different axial positions. In this article, the influences of the spatially inhomogeneous time-varying plasma sheath on millimeter waves are investigated. The electron density model is established, the time-domain sequence of the random channel is calculated, and the channel statistical parameters at different axial positions are extracted. The results show that the millimeter wave channel is spatially selective. Millimeter waves can transmit through the plasma sheath with less attenuation, multiplicative interference, and nonlinear effects at any position of the vehicle except the nose. When the antenna position is properly selected, the attenuation and multiplicative interference intensity can be further reduced. This indicates that millimeter wave communication technology is the most promising way to overcome the blackout problem and accomplish diverse communication tasks of a hypersonic vehicle.

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Section: A Space-time-varying Electron Density Modelmentioning

confidence: 99%

Spatial Selectivity of Plasma Sheath Channel at Millimeter Wave Band for Hypersonic Vehicle

Yao

Shi

et al. 2022

IEEE Trans. Plasma Sci.

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“…The study of SAR signal model under plasma sheath is a new problem and is fundamental for hypersonic platform-borne SAR imaging. Recently, a number of studies [19][20][21][22][23][24][25][26][27][28] on the signal propagation through plasma sheath were conducted. The reflection and transmission characteristics of sine waves [19][20][21][22][23] propagating through plasma sheath are analyzed in detail.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, a number of studies [19][20][21][22][23][24][25][26][27][28] on the signal propagation through plasma sheath were conducted. The reflection and transmission characteristics of sine waves [19][20][21][22][23] propagating through plasma sheath are analyzed in detail. Moreover, the depolarization effect of sine signals propagating in plasma sheath is further studied [24,25].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Hypersonic Platform-Borne SAR Imaging: A Physical Perspective

Song

Bai

et al. 2021

Remote Sensing

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The usage of a hypersonic platform for remote sensing application has promising prospects, especially for hypersonic platform-borne synthetic aperture radar (SAR) imaging. However, the high-speed of hypersonic platform will lead to extreme friction between the platform and air, which will cause the ionization of air. The ionized gas forms the plasma sheath wrapped around the hypersonic platform. The plasma sheath will severely affect the propagation of SAR signal and further affect the SAR imaging. Therefore, hypersonic platform-borne SAR imaging should be studied from a physical perspective. In this paper, hypersonic platform-borne SAR imaging under plasma sheath is analyzed. The SAR signal propagation in plasma sheath is computed using scatter matrix method. The proposed SAR signal model is verified by using a ground experiment system. Moreover, the effect of attenuation caused by plasma sheath on SAR imaging is studied under different SAR parameters and plasma sheath. The result shows that attenuation caused by plasma sheath will degrade the SAR imaging quality and even cause the point and area targets to be submerged into the noise. The real SAR images under plasma sheath also illustrate this phenomenon. Furthermore, by studying imaging results under different SAR and plasma parameters, it can be concluded that the severe degradation of SAR imaging quality appears at condition of high plasma sheath electron density and low SAR carrier frequency. The work in this paper will be beneficial for the study of hypersonic platform-borne SAR imaging and design of hypersonic SAR imaging systems in the future.

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“…Most systems will face modeling control problems caused by multiple complex environmental factors simultaneously: stronger nonlinearity, uncertain parameters, and external disturbances [1][2][3][4]. Such systems have higher requirements for the robustness and adaptive performance of the control algorithm, designing the control algorithm is a challenge [5]. It is necessary to study the nonlinear robust control system with compound uncertainties that meets the requirements.…”

Section: Introductionmentioning

confidence: 99%

Fuzzy Adaptive Backstepping Control of Nonlinear Uncertain Systems With Unmeasured States and Input Saturation

Yusuf

Cheng

2020

IEEE Access

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A Geometric-Stochastic Integrated Channel Model for Hypersonic Vehicle: A Physical Perspective

Cited by 27 publications

References 29 publications

Spatial Selectivity of Plasma Sheath Channel at Millimeter Wave Band for Hypersonic Vehicle

Spatial Selectivity of Plasma Sheath Channel at Millimeter Wave Band for Hypersonic Vehicle

Analysis of Hypersonic Platform-Borne SAR Imaging: A Physical Perspective

Fuzzy Adaptive Backstepping Control of Nonlinear Uncertain Systems With Unmeasured States and Input Saturation

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