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指数型粗糙地面与上方矩形截面柱宽带电磁散射的时域有限差分法研究

朱小敏 任新成 郭立新

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指数型粗糙地面与上方矩形截面柱宽带电磁散射的时域有限差分法研究

朱小敏, 任新成, 郭立新

Study on wide-band scattering from rectangular cross-section above rough land surface with exponential type distribution using FDTD

Zhu Xiao-Min, Ren Xin-Cheng, Guo Li-Xin
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  • 采用土壤介电常数的四成分模型表示实际地面的介电特性,应用指数型分布粗糙面模型和Monte Carlo方法模拟实际的粗糙地面,运用时域有限差分方法研究了微分高斯脉冲波照射时粗糙地面与上方目标的宽带电磁散射问题,得出了后向复合散射系数的频率响应曲线,计算了后向复合散射系数随粗糙地面高度起伏均方根、相关长度、土壤湿度、目标尺寸、高度、倾角等几何参数及介电参数等的变化情况,并做了详细分析与讨论,得到了指数型粗糙地面与上方目标宽带电磁散射特性.
    The dielectric property of the actual land surface is expressed using the four-component model of dielectric constant of soil, the actual rough land surface is simulated with model of exponential type distribution rough surface and Monte Carlo method, the wide-band electromagnetic scattering from column with rectangular cross-section above rough land surface under Gaussian differential pulse irradiation is studied using FDTD, the curves of frequency distribution of back composite scattering coefficient is obtained, the back composite scattering coefficient varying with the root-mean-square of height fluctuation, the correlation length of rough land surface, the moisture capacity of soil, the geometric parameter of the target, such as height, size, tilt and dielectric parameter of the target is calculated in details, the characteristics of the wide-band composite scattering from object above rough land surface with exponential type distribution are obtained.
    • 基金项目: 国家杰出青年科学基金(批准号:61225002)和国家自然科学基金(批准号:61379026)资助的课题.
    • Funds: Projected by the National Science Fund for Distinguished Young Scholars (Grant No. 61225002), and the National Nature Science Foundation of China (Grant No. 61379026).
    [1]

    Sun J J, Tong C M 2013 Journal of Microwaves 29 72 (in Chinese) [孙佳佳, 童创明 2013 微波学报 29 72]

    [2]

    Jin Y Q, Liu P, Ye H X 2008 Theory and Method of Numerical Simulation of Composite Scattering from the Object and Randomly Rough Surface (Beijing: Science Press) p165 (in Chinese) [金亚秋, 刘鹏, 叶红霞 2008 随机粗糙面与目标复合散射数值模拟理论与方法(北京:科学出版社)第165页]

    [3]

    Ye H X, Jin Y Q 2008 Acta Phys. Sin. 57 839 (in Chinese) [叶红霞, 金亚秋 2008 物理学报 57 839]

    [4]

    Hu B, Chew W C 2001 IEEE Trans. Geosci. Rem. Sens. 39 1028

    [5]

    Wang Y H, Zhang Y M, Guo L X 2008 Acta Phys. Sin. 57 5529 (in Chinese) [王运华, 张彦敏, 郭立新 2008 物理学报 57 5529]

    [6]

    Wang X, Li L W 2009 Prog. Electromagn. Res. 91 35

    [7]

    An Y Y, Wang D X, Chen R S 2013 Electromagnetics 33 10

    [8]

    An Y Y, Chen R S, Xu P P, Liu Z W, Zha L P 2012 Appl. Comput. Electrom. 27 541

    [9]

    Wang R, Guo L X, Li J, Liu X Y 2009 Sci. China Ser. G-Phys. Mech. Astron. 52 665

    [10]

    Zhao K M, Sun Y F 2011 Journal of Electronics & Information Technology 33 992 (in Chinese) [赵克明, 孙玉发 2011 电子与信息学报 33 992]

    [11]

    Du H M, Chen M S, Wu X L 2012 Acta Phys. Sin. 61 097201 (in Chinese) [杜红梅, 陈明生, 吴先良 2012 物理学报 61 097201]

    [12]

    Hastings F D, Schneider J B, Broschat S L 1995 IEEE Trans. Antennas Propagat. 43 1183

    [13]

    Ge D B, Yan Y B 2011 Finite-Difference Time-Domain Method for Electromagnetic Waves (3rd edition) (Xi'an: Xidian University Press) p104 (in Chinese) [葛德彪, 闫玉波 2011 电磁波时域有限差分方法(第三版)(西安:西安电子科技大学出版社)第104页]

    [14]

    Kunz K S, Luebbers R J 1993 The Finite Difference Time Domain Method for Electromagnetic (Boca Raton, FL: CRC Press) p45

    [15]

    Chen Z M, Wu X M 2008 Numer. Math. Theor. Meth. Appl. 1 113

    [16]

    Ren X C, Guo L X, Jiao Y C 2012 Acta Phys. Sin. 61 144101 (in Chinese) [任新成, 郭立新, 焦永昌 2012 物理学报 61 144101]

    [17]

    Wang J R, Schmugge T J 1980 IEEE Trans. Geosci. Rem. Sens. 18 288

  • [1]

    Sun J J, Tong C M 2013 Journal of Microwaves 29 72 (in Chinese) [孙佳佳, 童创明 2013 微波学报 29 72]

    [2]

    Jin Y Q, Liu P, Ye H X 2008 Theory and Method of Numerical Simulation of Composite Scattering from the Object and Randomly Rough Surface (Beijing: Science Press) p165 (in Chinese) [金亚秋, 刘鹏, 叶红霞 2008 随机粗糙面与目标复合散射数值模拟理论与方法(北京:科学出版社)第165页]

    [3]

    Ye H X, Jin Y Q 2008 Acta Phys. Sin. 57 839 (in Chinese) [叶红霞, 金亚秋 2008 物理学报 57 839]

    [4]

    Hu B, Chew W C 2001 IEEE Trans. Geosci. Rem. Sens. 39 1028

    [5]

    Wang Y H, Zhang Y M, Guo L X 2008 Acta Phys. Sin. 57 5529 (in Chinese) [王运华, 张彦敏, 郭立新 2008 物理学报 57 5529]

    [6]

    Wang X, Li L W 2009 Prog. Electromagn. Res. 91 35

    [7]

    An Y Y, Wang D X, Chen R S 2013 Electromagnetics 33 10

    [8]

    An Y Y, Chen R S, Xu P P, Liu Z W, Zha L P 2012 Appl. Comput. Electrom. 27 541

    [9]

    Wang R, Guo L X, Li J, Liu X Y 2009 Sci. China Ser. G-Phys. Mech. Astron. 52 665

    [10]

    Zhao K M, Sun Y F 2011 Journal of Electronics & Information Technology 33 992 (in Chinese) [赵克明, 孙玉发 2011 电子与信息学报 33 992]

    [11]

    Du H M, Chen M S, Wu X L 2012 Acta Phys. Sin. 61 097201 (in Chinese) [杜红梅, 陈明生, 吴先良 2012 物理学报 61 097201]

    [12]

    Hastings F D, Schneider J B, Broschat S L 1995 IEEE Trans. Antennas Propagat. 43 1183

    [13]

    Ge D B, Yan Y B 2011 Finite-Difference Time-Domain Method for Electromagnetic Waves (3rd edition) (Xi'an: Xidian University Press) p104 (in Chinese) [葛德彪, 闫玉波 2011 电磁波时域有限差分方法(第三版)(西安:西安电子科技大学出版社)第104页]

    [14]

    Kunz K S, Luebbers R J 1993 The Finite Difference Time Domain Method for Electromagnetic (Boca Raton, FL: CRC Press) p45

    [15]

    Chen Z M, Wu X M 2008 Numer. Math. Theor. Meth. Appl. 1 113

    [16]

    Ren X C, Guo L X, Jiao Y C 2012 Acta Phys. Sin. 61 144101 (in Chinese) [任新成, 郭立新, 焦永昌 2012 物理学报 61 144101]

    [17]

    Wang J R, Schmugge T J 1980 IEEE Trans. Geosci. Rem. Sens. 18 288

计量
  • 文章访问数:  5219
  • PDF下载量:  421
  • 被引次数: 0
出版历程
  • 收稿日期:  2013-10-16
  • 修回日期:  2013-10-28
  • 刊出日期:  2014-03-05

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