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激波风洞设施中的等离子体包覆目标电磁散射实验研究

金铭 韦笑 吴洋 张羽淮 余西龙

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激波风洞设施中的等离子体包覆目标电磁散射实验研究

金铭, 韦笑, 吴洋, 张羽淮, 余西龙

Backscattering measurements of plasma coated target in high-enthalpy wind tunnel

Jin Ming, Wei Xiao, Wu Yang, Zhang Yu-Huai, Yu Xi-Long
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  • 利用JF10高焓激波风洞设施, 进行了等离子鞘包覆目标的电磁散射测量实验. 基于矢量网络仪的步进扫频体制, 在C波段进行实验, 观测到等离子鞘对目标雷达散射截面(radar cross section, RCS)的影响. 并且, 目标散射测量值中直接体现了激波风洞的高速气流状态信息: 气流前段会造成散射回波的剧烈变化且稳定性差, 持续0.5–1 ms; 激发的等离子鞘有效持续时间仅约为2 ms, 衰减了目标RCS回波.
    When high-speed vehicles enter into the atmosphere, plasma sheath may be excited around due to aerodynamic heating, resulting in difficulties in communicating and changes of electromagnetic scattering properties. Those facts have received lots of attention due to their influences on the aerospace communication and radio telemetry applications. While analytic and numerical studies have been carried out by many native institutions on the electromagnetic radiation/scattering problems in the presence of plasma sheath, there remains the lack of measurement data to support and verify those researches. This work reports the backscattering measurements for the target surrounded by plasma sheath in the ground high-enthalpy shock tunnel facility. Using the step frequency sweeping mode of a commercial instrument, i.e., vector network analyzer, we conduct the experiments in the JF-10 high-enthalpy shock tunnel. The dynamic electromagnetic scattering measurement must be completed on a time scale of ms while the shock tunnel is running. The implementation details are demonstrated in this work, including the experimental configurations, data processing procedures, timing synchronization, and discussion on the relationships between the air flow status and measured target scattering signals. The influences of the plasma sheath on the target RCS (radar cross section) in the C band are successfully and clearly observed. The influence of the air flow status on the measured data can be concluded as follows: the front section of high-speed air flow lasting about 0.5-1 ms will change the measured signal dramatically, which should be avoided in observation due to its instability; the effective plasma sheath lasts only about 2 ms, resulting in an overall reduction on the target RCS by about 2 dB in the measurements. Afterwards, the effects by the plasma sheath on the target scattering vanish quickly.
    • 基金项目: 国家自然科学基金重大项目(批准号: 61490695-07)资助的课题.
    • Funds: Project supported by the Major Program of National Natural Science Foundation of China (Grant No. 61490695-07).
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    Chaudhury B, Chaturvedi S 2005 IEEE Trans. Plasma Sci. 33 2027

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    Chaudhury B, Chaturvedi S 2009 IEEE Trans. Plasma Sci. 37 2116

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    [21]

    Ma P, Bu S Q, Shi A H, Zhang Z C, Yu Z F, Huang J 2010 J. Experim. Flu. Mech. 24 56 (in Chinese) [马平, 部邵清, 石安华, 张志成, 于哲峰, 黄洁 2010 实验流体力学 24 56]

    [22]

    Zeng X J, Yu Z F, Bu S Q, Liu S, M P, Shi A H, Liang S C 2010 Acta Aerodynam. Sin. 28 645

    [23]

    Jiang Z L, Yu H R 2009 Adv. Mech. 39 766 (in Chinese) [姜宗林, 愈鸿儒 2009 力学进展 39 766]

    [24]

    Liao G, Lin Z B, Guo D H, Lin J M 2010 J. Experim. Flu. Mech. 24 79 (in Chinese) [廖光, 林贞彬, 郭大华, 林建民 2010 实验流体力学 24 79]

    [25]

    He G Y, Lu C C, Hong J C, Deng H 2006 Computation and Measurements of Electromagnetic Scattering (Beijing: Beihang University Press) (in Chinese) [何国瑜, 卢才成, 洪家才, 邓晖 2006 电磁场散射的计算与测量 (北京: 北京航空航天大学出版社)]

    [26]

    Wang Q 2013 Ph. D. Dissertation (Beijing: Institute of Mechanics, Chinese Academy of Sciences) (in Chinese) [汪球 2013 博士学位论文 (北京: 中国科学院力学研究所)]

  • [1]

    Rybak J, Churchill R 1971 IEEE Trans. Aerosp. Electron. Sy. 7 879

    [2]

    Mather D E, Pasqual J M, Sillence J P 2005 Reston: Proc. AIAA AIAA-2005-3443

    [3]

    Liu S B 2004 Ph. D. Dissertation (Changsha: National University of Defense Technology) (in Chinese) [刘少斌 2004 博士学位论文 (长沙: 国防科技大学)]

    [4]

    Li J T 2012 Ph. D. Dissertation (Xian: Xidian University) (in Chinese) [李江挺 2012 博士学位论文 (西安: 西安电子科技大学)]

    [5]

    Wei X, Peng S L, Yin H C, Yin G T 2011 J. Syst. Eng. Electron. 33 506 (in Chinese) [韦笑, 彭世镠, 殷红成, 印国泰 2011 系统工程与电子技术 33 506]

    [6]

    Li J T, Guo L X 2012 J. Electromagnet. Wave. 26 1767

    [7]

    Li J T, Guo L X, Fang Q J, Liu W 2011 J. Syst. Eng. Electron. 33 969 (in Chinese) [李江挺, 郭立新, 方全杰, 刘伟 2011 系统工程与电子技术 33 969]

    [8]

    Song J G, Liu J F, Du Y X, Xi X L 2015 Appl. Phys. A Pre-Online

    [9]

    Bai B W, Li X P, Liu Y M, Xu J, Shi L, Xie K 2014 IEEE Trans. Plasma Sci. 42 3365

    [10]

    Liu S B, Mo J J, Yuan N C 2004 Acta Phys. Sin. 53 778 (in Chinese) [刘少斌, 莫锦军, 袁乃昌 2004 物理学报 53 778]

    [11]

    Liu J F, Xi X L, Wan G B, Wang L L 2011 IEEE Trans. Plasma Sci. 39 852

    [12]

    Nguyen B T, Furse C, Simpson J J 2015 IEEE Trans. Antenn. Propag. 63 304

    [13]

    Liu S B, Mo J J, Yuan N C 2002 Int. J. Infrared Milli. 23 1179

    [14]

    Chaudhury B, Chaturvedi S 2005 IEEE Trans. Plasma Sci. 33 2027

    [15]

    Chaudhury B, Chaturvedi S 2009 IEEE Trans. Plasma Sci. 37 2116

    [16]

    Liu M H, Hu X W, Jiang Z H, Zhang S, Pan Y 2006 Chin. Phys. Lett. 23 410

    [17]

    Gao H M, Fa P T 2008 Chin. Phys. Lett. 25 2562

    [18]

    Zheng L, Zhao Q, Luo X G, Ma P, Liu X Z, Huang C, Xing X J, Zhang C Y, Chen X L 2012 Acta Phys. Sin. 61 155203 (in Chinese) [郑灵, 赵青, 罗先刚, 马平, 刘述章, 黄成, 邢晓俊, 张春艳, 陈旭霖 2012 物理学报 61 155203]

    [19]

    Liang S C, Yu Z F, Zhang Z C, Shi A H, Ma P, Huang J 2013 J. Experim. Flu. Mech. 27 19 (in Chinese) [梁世昌, 于哲峰, 张志成, 石安华, 马平, 黄洁 2013 实验流体力学 27 19]

    [20]

    Zeng X J, Ma P, Bu S Q, Liu S, Shi A H, Yu Z F 2008 J. Experim. Flu. Mech. 22 5 (in Chinese) [曾学军, 马平, 部绍清, 柳森, 石安华, 于哲峰 2008 实验流体力学 22 5]

    [21]

    Ma P, Bu S Q, Shi A H, Zhang Z C, Yu Z F, Huang J 2010 J. Experim. Flu. Mech. 24 56 (in Chinese) [马平, 部邵清, 石安华, 张志成, 于哲峰, 黄洁 2010 实验流体力学 24 56]

    [22]

    Zeng X J, Yu Z F, Bu S Q, Liu S, M P, Shi A H, Liang S C 2010 Acta Aerodynam. Sin. 28 645

    [23]

    Jiang Z L, Yu H R 2009 Adv. Mech. 39 766 (in Chinese) [姜宗林, 愈鸿儒 2009 力学进展 39 766]

    [24]

    Liao G, Lin Z B, Guo D H, Lin J M 2010 J. Experim. Flu. Mech. 24 79 (in Chinese) [廖光, 林贞彬, 郭大华, 林建民 2010 实验流体力学 24 79]

    [25]

    He G Y, Lu C C, Hong J C, Deng H 2006 Computation and Measurements of Electromagnetic Scattering (Beijing: Beihang University Press) (in Chinese) [何国瑜, 卢才成, 洪家才, 邓晖 2006 电磁场散射的计算与测量 (北京: 北京航空航天大学出版社)]

    [26]

    Wang Q 2013 Ph. D. Dissertation (Beijing: Institute of Mechanics, Chinese Academy of Sciences) (in Chinese) [汪球 2013 博士学位论文 (北京: 中国科学院力学研究所)]

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出版历程
  • 收稿日期:  2014-12-22
  • 修回日期:  2015-06-19
  • 刊出日期:  2015-10-05

激波风洞设施中的等离子体包覆目标电磁散射实验研究

  • 1. 电磁散射重点实验室, 北京 100854;
  • 2. 中国科学院力学研究所, 高温气体动力学国家重点实验室, 北京 100190
    基金项目: 国家自然科学基金重大项目(批准号: 61490695-07)资助的课题.

摘要: 利用JF10高焓激波风洞设施, 进行了等离子鞘包覆目标的电磁散射测量实验. 基于矢量网络仪的步进扫频体制, 在C波段进行实验, 观测到等离子鞘对目标雷达散射截面(radar cross section, RCS)的影响. 并且, 目标散射测量值中直接体现了激波风洞的高速气流状态信息: 气流前段会造成散射回波的剧烈变化且稳定性差, 持续0.5–1 ms; 激发的等离子鞘有效持续时间仅约为2 ms, 衰减了目标RCS回波.

English Abstract

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