基于化学物质释放的电离层闪烁抑制方法研究

赵海生; 许正文; 徐朝辉; 薛昆; 郑延帅; 谢守志; 冯杰; 吴健

doi:10.7498/aps.68.20182281

摘要

中低纬地区经常发生的电离层闪烁, 严重影响卫星链路的无线电信号传播过程, 导致卫星通信导航信号质量下降, 甚至中断. 在电离层闪烁发生前的酝酿生成期, 通过向电离层闪烁“种子因素”的等离子体泡内释放电子密度增强类化学物质, 填充等离子体泡, 改变等离子体环境特性, 调控电离层动力学过程, 能够降低电离层等离子体不稳定性增长率, 进而抑制闪烁的发生. 本文开展了基于化学物质释放的电离层闪烁抑制理论及方法研究, 根据化学物质释放对电离层等离子体环境的影响, 定量计算控制因素改变对不稳定性增长率的贡献, 建立了基于电子密度增强类化学物质释放的电离层闪烁抑制物理模型, 仿真了等离子体泡的填充过程及等离子体不稳定性增长率的演化过程. 仿真结果表明该方法具有较好的闪烁抑制效果, 为我国中低纬地区卫星信号电离层闪烁抑制研究奠定了理论基础.

关键词:

Abstract

There occur frequently the ionospheric scintillation events at low and middle latitudes, which seriously affect the radio transmission process of satellite link, resulting in the decline of satellite communication and navigation signal quality and even interrupt. During the gestation period before the ionospheric scintillation, the growth rate of plasma instability can be reduced and thus suppress the scintillation events by releasing the electron density-enhancing chemicals in the ionosphere plasma bubble, filling with plasma bubble, changing the plasma environmental characteristics, and regulating the ionospheric dynamics process. The theory and method of suppressing the ionospheric scintillation based on chemical release are tnvestigated. According to the change of the plasma environment caused by the chemical release, and the quantitatively calculating of the contribution of control factors to the growth rate of instability, an ionospheric scintillation suppression model is built, which is based on chemical release into ionosphere. The process of plasma bubble filling out is simulated and the results of the simulation show that the plasma cloud is completely filled with plasma bubbles after 1200 seconds, which reduces the plasma density gradient and suppresses the growth of plasma instability. The growth of plasma instability decreases from 0.2 before releasing to about 0.0004 after releasing, and no new instability is excited within 20 minutes after the plasma bubble has been filled up. Guangdong, South China Sea and other regions in China are at the peak of equatorial anomalies, and the occurrence rate and severity of scintillation are more significant than those in the equatorial and Polar Regions, thus these regions become the regions where there occur most frequently the scintillation and the most serious influence globally. The research work of this paper will lay a solid theoretical foundation for the technology of suppressing the satellite signal ionospheric scintillation in middle and low latitude area of China.

Keywords:

作者及机构信息

中国电波传播研究所, 电波环境特性及模化技术重点实验室, 青岛　266107

通信作者: 赵海生, zhaohaisheng213@163.com

基金项目: 国家自然科学基金(批准号: 61871352, 11672068, 61601419)资助的课题.

Authors and contacts

National Key Laboratory of Electromagnetic Environment, China Research Institute of Radiowave Propagation, Qingdao 266107, China

Corresponding author: Zhao Hai-Sheng, zhaohaisheng213@163.com

Funds: Project supported by the National Natural Science Foundation of China (Grant Nos. 61871352, 11672068, 61601419).

文章全文 : translate this paragraph

参考文献

[1]	Kelley M C 2009 The Earth’s Ionosphere: Plasma Physics & Electrodynamics 2nd Ed (Burlington: Academic Press) pp96–112
[2]	Kuo S P, Cheo B R, Lee M C 1983 J. Geophys. Res. 88 417 Google Scholar
[3]	Baker D N 2000 IEEE Trans. Plasma Sci. 28 2007 Google Scholar
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施引文献

图 1 电离层闪烁对卫星导航和通信的影响示意图

Fig. 1. The schematic diagram of the influence of ionospheric scintillation on satellite navigation and communication

下载: 全尺寸图片幻灯片

图 2 (a) MOSC-2试验期间夜晚电离层电子密度分布图; (b) 试验后第二天夜晚电子密度分布图

Fig. 2. (a) Electron density distribution at night during the experiment; (b) electron density distribution at next night of the experiment

下载: 全尺寸图片幻灯片

图 3 电离层闪烁抑制仿真模型设计流程图

Fig. 3. The design flow chart of ionospheric scintillation suppression simulation model.

下载: 全尺寸图片幻灯片

图 4 在250 km高度释放5.6 kg Sm蒸气, 电子密度随时间的演化

Fig. 4. Electron density evolution after releasing 5.6 kg Sm at 250 km altitude.

下载: 全尺寸图片幻灯片

图 5 在250 km高度释放5.6 kg Sm蒸气的电离层闪烁抑制效果

Fig. 5. The scintillation suppression effect of releasing 5.6 kg Sm at 250 km altitude

下载: 全尺寸图片幻灯片

图 6 在250 km高度释放5.6 kg Sm蒸气, 不稳定性增长率随时间的变化

Fig. 6. The evolution of instability growth rate after releasing 5.6 kg Sm at 250 km altitude.

下载: 全尺寸图片幻灯片

表 1 仿真参数

Table 1. Parameters for the simulation.

参数	取值
时间	2016年9月25日24:00 LT
地点	三沙 (16.5 °N, 112.2 °E)
高度	250 km
释放量	5.6 kg
背景电离层	IRI2012
大气密度及中性气体温度	ATMOSNRLMSISE-00
化学反应系数	2.0 × 10^–11 cm³/s^[27]

下载: 导出CSV

map

[1]	Kelley M C 2009 The Earth’s Ionosphere: Plasma Physics & Electrodynamics 2nd Ed (Burlington: Academic Press) pp96–112
[2]	Kuo S P, Cheo B R, Lee M C 1983 J. Geophys. Res. 88 417 Google Scholar
[3]	Baker D N 2000 IEEE Trans. Plasma Sci. 28 2007 Google Scholar
[4]	Frederickson A R, Dennison J R 2003 IEEE Trans. Nucl. Sci. 50 2284 Google Scholar
[5]	Gubby R, Evans J 2002 Atmos. Terr. Phys. 64 1723 Google Scholar
[6]	Yokoyama T, Shinagawa H, Jin H 2014 J. Geophys. Res.: Space Phys. 119 474
[7]	Yokoyama T, Jin H, Shinagawa H 2015 J. Geophys. Res. Space Phys. 120 Google Scholar
[8]	Klobuchar J A, Abdu M A 1989 J. Geophys. Res.: Space Phys. 94 2721 Google Scholar
[9]	Dwight P S, Manfred A B, Hake R D 1981 Planet. Space Sci. 29 1267
[10]	Sharpee B D, Slanger T G 2006 J. Phys. Chem. 110 6707 Google Scholar
[11]	Reasoner D L 1992 J. Spacecraft Rockets 29 580 Google Scholar
[12]	Caton R G, Pedersen T R, Groves K M, et al. 2017 Radio Sci. 52 539 Google Scholar
[13]	Rettere J, Groves K M, Pedersen T R, Caton R G 2017 Radio Sci. 52 604 Google Scholar
[14]	Bernhardt P A, Siefring C L, Briczinski S J, Viggiano A, Caton R G, Pedersen T R, Holmes J M, Ard S, Shuman N, Groves K M 2017 Radio Sci. 52 559 Google Scholar
[15]	Holmes J M, Dressler R A, Pedersen T R, Caton R G, Miller D 2017 Radio Sci. 52 521 Google Scholar
[16]	Pedersen T R, Caton R G, Miller D, Holmes J M, Groves K M, Sutton E 2017 Radio Sci. 52 578 Google Scholar
[17]	Joshi D, Groves K M, McNeil W, et al. 2017 Radio Sci. 52 710 Google Scholar
[18]	黄文耿, 古士芬 2005 空间科学学报 25 254 Google Scholar Huang W G, Gu S F 2005 J. Space Sci. 25 254 Google Scholar
[19]	黄文耿, 古士芬 2005 空间科学学报 28 81 Google Scholar Huang W G, Gu S F 2005 J. Space Sci. 28 81 Google Scholar
[20]	胡耀垓, 张援农, 赵正予 2010 59 8293 Google Scholar Hu Y G, Zhang Y N, Zhao Z Y 2010 Acta Phys. Sin. 59 8293 Google Scholar
[21]	Hu Y G, Zhao Z Y, Zhang Y N 2011 J. Geophys. Res. 116 A07307
[22]	胡耀垓, 赵正予, 项薇 2010 60 099402 Hu Y G, Zhao Z Y, Xiang W 2010 Acta Phys. Sin. 60 099402
[23]	胡耀垓, 张援农, 赵正予 2012 61 089401 Google Scholar Hu Y G, Zhang Y N, Zhao Z Y 2012 Acta Phys. Sin. 61 089401 Google Scholar
[24]	汪四成, 方涵先, 杨升高, 等 2012 地球物理学进展 27 2464 Google Scholar Wang S C, Fang H X, Yang S G, et al. 2012 Prog. Geophys. 27 2464 Google Scholar
[25]	汪四成, 方涵先 2013 地球 56 2906 Google Scholar Wang S C, Fang H X 2013 J. Geophy. 56 2906 Google Scholar
[26]	汪四成, 方涵先, 杨升高, 等 2012 大气科学学报 36 499 Wang S C, Fang H X, Yang S G, et al. 2012 J. Atmos. Sci. 36 499
[27]	Zhao H S, Feng J, Xu Z W, Wu J, Wu Z S, Xu B, Xue K, Hu Y L 2016 J. Geophys. Res.: Space Phys. 121Google Scholar
[28]	Xu Z W, Zhao H S, Wu J, Feng J, Xu B, Zhang Y B, Xue K, Ma Z Z 2017 Adv. Space Res. 59 1810 Google Scholar
[29]	赵海生, 许正文, 吴振森, 等 2016 65 209401 Google Scholar Zhao H S, Xu Z W, Wu Z S, et al. 2016 Acta Phys. Sin. 65 209401 Google Scholar
[30]	赵海生, 许正文, 吴振森, 等 2018 67 019401 Google Scholar Zhao H S, Xu Z H, Xu Z W, Wu Z S, et al. 2018 Acta Phys. Sin. 67 019401 Google Scholar
[31]	Liu Y, Cao J, Xu L, et al. 2014 Geophys. Res. Lett. 45 1413
[32]	Liu Y, Cao J, Xu L, et al. 2014 J. Geophys. Res.: Space Phys. 119 4134 Google Scholar
[33]	罗伟华, 徐继生, 徐良 2009 地球 52 849 Google Scholar Luo W H, Xu J S, Xu L 2009 J. Geophy. Res. 52 849 Google Scholar
[34]	Gao J, Guo L, Xu Z, et al. 2018 Adv. Space Res. 61 2234 Google Scholar

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