Propagation Path of Radio Waves in Nonequilibrium Reentry Plasma Around a Nanosatellite With an Inflatable Aeroshell

Takahashi, Yusuke

doi:10.1109/taes.2022.3158625

Cited by 7 publications

(1 citation statement)

References 42 publications

(45 reference statements)

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“…Besides radar signatures of hypersonic targets, also the study of the radio communication blackout during the atmospheric re-entry is an important application area. First, considering the plasma sheath as layered medium with constant plasma values in each layer [5], [6], [7], [8], second, applying ray tracers [9], and, third, solving the electromagnetic wave propagation in plasma with rigorous numerical approaches like Finite Difference Time Domain (FDTD) solvers [10], [11], [12], [13]. These solutions, however, are not exact and use some approximations like a rectangular grid in usual FDTD schemes or require further assumptions like the absence of a magnetic field to simplify the considerations.…”

Section: Introductionmentioning

confidence: 99%

The Measurement of Radar–Plasma Signatures in a Hypersonic Shock Tunnel: Simulation and Experiment

Petervari,

Weidner,

Nekris

et al. 2023

IEEE Trans. Aerosp. Electron. Syst.

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The plasma sheath that forms around a body in hypersonic flight can change the radar signature substantially. The prediction of radar-plasma-signatures, however, is complex, since it incorporates aerothermodynamics and electromagnetics and requires a number of critical assumptions on chemical and aerodynamic parameters as well as on the electromagnetic plasma model. Hence, such an approach requires thorough experimental validation to estimate and reduce its uncertainty. But radar data of hypersonic targets in free flight is extremely rare and, if existing, mostly unavailable. A different validation approach, which This work was funded in the scope of the basic funding of the French and the German MoD and in parts by a dedicated BAAINBw project.

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