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肖雄, 姜春华, 杨国斌, 赵正予. 星载等离子体探测仪回波的模拟研究[J]. 深空探测学报(中英文), 2022, 9(2): 230-236. DOI: 10.15982/j.issn.2096-9287.2022.20210127
引用本文: 肖雄, 姜春华, 杨国斌, 赵正予. 星载等离子体探测仪回波的模拟研究[J]. 深空探测学报(中英文), 2022, 9(2): 230-236. DOI: 10.15982/j.issn.2096-9287.2022.20210127
XIAO Xiong, JIANG Chunhua, YANG Guobin, ZHAO Zhengyu. Simulation Study on Echo of Earth Plasma Layer Detector[J]. Journal of Deep Space Exploration, 2022, 9(2): 230-236. DOI: 10.15982/j.issn.2096-9287.2022.20210127
Citation: XIAO Xiong, JIANG Chunhua, YANG Guobin, ZHAO Zhengyu. Simulation Study on Echo of Earth Plasma Layer Detector[J]. Journal of Deep Space Exploration, 2022, 9(2): 230-236. DOI: 10.15982/j.issn.2096-9287.2022.20210127

星载等离子体探测仪回波的模拟研究

Simulation Study on Echo of Earth Plasma Layer Detector

  • 摘要: 基于星载等离子体探测仪的实测回波图,提出结合全球尺度等离子体模型(Global Core Plasma Model,GCPM)和射线追踪技术来模拟电磁波在等离子体层和磁层等离子体环境中的传播过程。采用的射线追踪方法基于冷等离子体折射指数,考虑磁场对于折射指数的影响。该模拟方法通过仿真获取等离子体探测回波的结构特征,为星载等离子体探测仪获取实测等离子体回波图提供一定的参考价值。对后续从实测等离子体回波图中反演得到电子密度剖面具有指导意义,也为未来深空探测任务和通信工程的顺利实施提供重要的参考依据。

     

    Abstract: Ever of the plasmas layer and layer of magnetic plasma environment detection is mainly based on satellite in place or passive detection means, and spaceborne plasma probe as a way of active detection(active) to send and receive electromagnetic wave echo, to detect the plasma space environment provides a new means of detection, This mode can obtain the distribution structure of electron density along the propagation path in plasma space environment. This article is based on our country has not yet have access to spaceborne Plasma detector measured echo figure, put forward the combined with Plasma GCPM(Global Core Plasma Model)and the ray tracing technique to simulate the electromagnetic waves in plasmas layer and magnetospheric Plasma environment in the communication process. The ray tracing method adopted in this paper is based on the refraction index of cold plasma, considering the effect of magnetic field on the refraction index. This simulation method can obtain the structural characteristics of plasma echo through simulation, which provides a certain reference value for spaceborne plasma detector to obtain the measured plasma echo image. At the same time, it can also provide guidance for the subsequent inversion of electron density profile from measured plasma echo map, and provide important reference for the smooth implementation of deep space exploration and communication engineering.

     

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