The multi-peak point phenomenon of broadband microwave reflection caused by inhomogeneous plasma

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外文摘要：During spacecraft re-entry,the challenge of measuring plasma sheath parameters directly contributes to difficulties in addressing communication blackout.In this work,we have discovered a phenomenon of multiple peaks in reflection data caused by the inhomogeneous plasma.Simulation results show that the multi-peak points fade away as the characteristic frequency is approached,resembling a series of gradually decreasing peaks.The positions and quantities of these points are positively correlated with electron density,yet they show no relation to collision frequency.This phenomenon is of significant reference value for future studies on the spatial distribution of plasmas,particularly for using microwave reflection signals in diagnosing the plasma sheath.

外文关键词：

plasma sheathmicrowave reflectioninhomogeneous plasma

作者：

杨敏、齐凯旋、杨玖文、贾飒、刘浩岩、陈燕扬、李瑾、李小平

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作者单位：

School of Aerospace Science and Technology,Xidian University,Xi'an 710071,People's Republic of China

Taiyuan Satellite Launch Center,Taiyuan 030173,People's Republic of China

Beijing Institute of Nearspace Vehicle's Systems Engineering,Beijing 100076,People's Republic of China

出版年：

2024

DOI：