高级搜索

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

土壤表面与置于其上组合目标复合电磁散射特性研究

任新成 刘鹏 朱小敏 杨鹏举 赵晔

任新成, 刘鹏, 朱小敏, 杨鹏举, 赵晔. 土壤表面与置于其上组合目标复合电磁散射特性研究[J]. 电子与信息学报, 2020, 42(11): 2629-2635. doi: 10.11999/JEIT190645
引用本文: 任新成, 刘鹏, 朱小敏, 杨鹏举, 赵晔. 土壤表面与置于其上组合目标复合电磁散射特性研究[J]. 电子与信息学报, 2020, 42(11): 2629-2635. doi: 10.11999/JEIT190645
Xincheng REN, Peng LIU, Xiaomin ZHU, Pengju YANG, Ye ZHAO. Study on the Characteristics of Composite Electromagnetic Scattering From Soil Surface and Combinatorial Target Placed on It[J]. Journal of Electronics & Information Technology, 2020, 42(11): 2629-2635. doi: 10.11999/JEIT190645
Citation: Xincheng REN, Peng LIU, Xiaomin ZHU, Pengju YANG, Ye ZHAO. Study on the Characteristics of Composite Electromagnetic Scattering From Soil Surface and Combinatorial Target Placed on It[J]. Journal of Electronics & Information Technology, 2020, 42(11): 2629-2635. doi: 10.11999/JEIT190645

土壤表面与置于其上组合目标复合电磁散射特性研究

doi: 10.11999/JEIT190645
基金项目: 国家自然科学基金(61861043, 61701428, 61801416),陕西省教育厅科研计划项目(17JK0860),复旦大学电磁波信息科学教育部重点实验室开放基金(EMW201910)
详细信息
    作者简介:

    任新成:男,1967年生,教授,研究方向为环境与目标的电磁波散射与传播、计算电磁学、时域有限差分方法、矩量法

    刘鹏:男,1971年生,副教授,研究方向为环境与目标的电磁波散射与传播、海洋与舰船SAR遥感、计算电磁学、有限元方法

    朱小敏:男,1975年生,副教授,研究方向为环境与目标的电磁波散射与传播、时域有限差分方法、矩量法

    杨鹏举:男,1984年生,讲师,研究方向为环境与目标的电磁波散射与传播、时域有限差分方法、矩量法

    赵晔:女,1987年生,讲师,研究方向为环境与目标的电磁波散射与传播、时域有限差分方法、矩量法

    通讯作者:

    任新成 xchren@yau.edu.cn

  • 中图分类号: TN011

Study on the Characteristics of Composite Electromagnetic Scattering From Soil Surface and Combinatorial Target Placed on It

Funds: The National Natural Science Foundation of China (61861043, 61701428, 61801416), The Scientific Research Projects of Shaanxi Education Department (17JK0860), The Open Foundation of Fudan University Key Laboratory for Information Science of Electromagnetic Waves (MoE) (EMW201910)
  • 摘要: 为了满足置于粗糙面之上组合目标测量和检测的需要,该文分别采用Dobson半经验模型和电介质复介电常数公式表示土壤介电常数的实部和虚部,应用指数型分布粗糙面和Monte Carlo方法模拟实际的土壤表面。通过与矩量法得到的计算结果比较,验证了时域有限差分(FDTD)方法计算粗糙面与目标复合散射问题的有效性,进而运用该方法研究了土壤表面与置于其上组合目标的复合散射,得出了复合散射系数的角分布曲线。结果表明:复合散射系数随散射角振荡地变化,在镜反射方向处发生散射增强效应;土壤表面高度起伏均方根越大,复合散射系数越大;相关长度越大,复合散射系数越小;湿度越大,复合散射系数越小;组合目标尺度、介电常数、入射角对复合散射系数影响比较复杂。该文结果可用于求解地、海粗糙面与置于其上任意目标的复合电磁散射问题,与其它数值计算方法相比较,采用时域有限差分方法既可获得较高的准确性,同时又可减少计算时间和内存占用量。
  • 图  1  土壤表面与置于其上组合目标复合散射几何示意图

    图  2  土壤表面与置于其上组合目标复合散射计算的FDTD模型

    图  3  粗糙面与目标复合散射FDTD, MoM数值仿真结果比较

    图  4  FDTD与MoM仿真结果绝对误差分布

    图  5  土壤介电常数实部随土壤湿度变化曲线

    图  6  土壤表面均方根对复合散射系数的影响

    图  7  土壤表面相关长度对复合散射系数的影响

    图  8  土壤湿度对复合散射系数的影响

    图  9  目标尺度对复合散射系数的影响

    图  10  目标介电常数对复合散射系数的影响

    图  11  入射角对复合散射系数的影响

  • TSANG L, LIAO T, TAN Shurun, et al. Rough surface and volume scattering of soil surfaces, ocean surfaces, snow, and vegetation based on numerical maxwell model of 3-D simulations[J]. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2017, 10(11): 4703–4720. doi: 10.1109/JSTARS.2017.2722983
    KIM S B, VAN ZYL J J, JOHNSON J T, et al. Surface soil moisture retrieval using the L-Band synthetic aperture radar onboard the soil moisture active-passive satellite and evaluation at core validation sites[J]. IEEE Transactions on Geoscience and Remote Sensing, 2017, 55(4): 1897–1914. doi: 10.1109/TGRS.2016.2631126
    KHANKHOJE U K and PADHY S. Stochastic solutions to rough surface scattering using the finite element method[J]. IEEE Transactions on Antennas and Propagation, 2017, 65(8): 4170–4180. doi: 10.1109/TAP.2017.2715366
    CHANG Wenmo, DING K H, TSANG L, et al. Microwave scattering and medium characterization for terrestrial snow with QCA-Mie and bicontinuous models: Comparison studies[J]. IEEE Transactions on Geoscience and Remote Sensing, 2016, 54(6): 3637–3648. doi: 10.1109/TGRS.2016.2522438
    ALTUNCU Y. A numerical method for electromagnetic scattering by 3-D dielectric objects buried under 2-D locally rough surfaces[J]. IEEE Transactions on Antennas and Propagation, 2015, 63(8): 3634–3643. doi: 10.1109/TAP.2015.2438859
    BELLEZ S, BOURLIER C, and KUBICKÉ G. 3-D scattering from a PEC target buried beneath a dielectric rough surface: An efficient PILE-ACA algorithm for solving a hybrid KA-EFIE formulation[J]. IEEE Transactions on Antennas and Propagation, 2015, 63(11): 5003–5014. doi: 10.1109/TAP.2015.2480123
    XU Runwen, GUO Lixin, HE Hongjie, et al. A hybrid FEM/MoM technique for 3-D electromagnetic scattering from a dielectric object above a conductive rough surface[J]. IEEE Geoscience and Remote Sensing Letters, 2016, 13(3): 314–318. doi: 10.1109/LGRS.2015.2508500
    SUN Hualong, TONG Chuangming, and ZOU Gaoxiang. High efficiency iterative solver for modeling composite rough surface electromagnetic scattering[J]. Electromagnetics, 2017, 37(2): 113–126. doi: 10.1080/02726343.2017.1279113
    苏翔, 吴振森, 王晓冰, 等. 稀疏矩阵规范网格结合物理双网格分析介质海面散射特性与试验验证[J]. 电子与信息学报, 2016, 38(2): 486–494. doi: 10.11999/JEIT150401

    SU Xiang, WU Zhensen, WANG Xiaobing, et al. Backscatter analysis of lossy dielectric sea surface using SMCG-PBTG method—comparison with experimental data[J]. Journal of Electronics &Information Technology, 2016, 38(2): 486–494. doi: 10.11999/JEIT150401
    王童, 童创明, 李西敏, 等. 海洋粗糙面全极化电磁散射特性研究[J]. 电子与信息学报, 2018, 40(6): 1412–1418. doi: 10.11999/JEIT170924

    WANG Tong, TONG Chuangming, LI Ximin, et al. Research on the full polarimetric electromagnetic scattering characteristics of ocean rough surface[J]. Journal of Electronics &Information Technology, 2018, 40(6): 1412–1418. doi: 10.11999/JEIT170924
    REN Xincheng, ZHAO Ye, YANG Pengju, et al. Electromagnetic scattering by multiple columns partially buried in a ground plane[J]. International Journal of Antennas and Propagation, 2017, 2017: 8101509. doi: 10.1155/2017/8101509
    任新成, 朱小敏, 刘鹏. 大地土壤表面与浅埋多目标宽带复合电磁散射研究[J]. 物理学报, 2016, 65(20): 204101. doi: 10.7498/aps.65.204101

    REN Xincheng, ZHU Xiaomin, and LIU Peng. Wide-band composite electromagnetic scattering from the earth soil surface and multiple targets shallowly buried[J]. Acta Physica Sinica, 2016, 65(20): 204101. doi: 10.7498/aps.65.204101
    HE Hongjie and GUO Lixin. A multihybrid FE-BI-KA technique for 3-D electromagnetic scattering from a coated object above a conductive rough surface[J]. IEEE Geoscience and Remote Sensing Letters, 2016, 13(12): 2009–2013. doi: 10.1109/LGRS.2016.2621121
    任新成, 朱小敏, 刘鹏. 雪层覆盖土壤表面与半埋柱体宽带复合散射FDTD方法[J]. 计算物理, 2017, 34(3): 327–334. doi: 10.3969/j.issn.1001-246X.2017.03.009

    REN Xincheng, ZHU Xiaomin, and LIU Peng. FDTD study on wide-band composite scattering from soil surface covered with snow and a partially buried column[J]. Chinese Journal of Computational Physics, 2017, 34(3): 327–334. doi: 10.3969/j.issn.1001-246X.2017.03.009
    PEPLINSKI N R, ULABY F T, and DOBSON M C. Dielectric properties of soils in the 0.3-1.3-GHz range[J]. IEEE Transactions on Geoscience and Remote Sensing, 1995, 33(3): 803–807. doi: 10.1109/36.387598
    曾江源, 李震, 陈权, 等. SAR土壤水分反演中的介电常数实部简化模型[J]. 红外与毫米波学报, 2012, 31(6): 556–562. doi: 10.3724/SP.J.1010.2012.00556

    ZENG Jiangyuan, LI Zhen, CHEN Quan, et al. A simplified model of the real part of the soil complex permittivity for soil moisture estimation from SAR image[J]. Journal of Infrared and Millimeter Waves, 2012, 31(6): 556–562. doi: 10.3724/SP.J.1010.2012.00556
    WANG J R and SCHMUGGE T J. An empirical model for the complex dielectric permittivity of soils as a function of water content[J]. IEEE Transactions on Geoscience and Remote Sensing, 1980, GE-18(4): 288–295. doi: 10.1109/TGRS.1980.350304
    刘军, 赵少杰, 蒋玲梅, 等. 微波波段土壤的介电常数模型研究进展[J]. 遥感信息, 2015, 30(1): 5–13, 70. doi: 10.3969/j.issn.1000-3177.2015.01.002

    LIU Jun, ZHAO Shaojie, JIANG Lingmei, et al. Research progress on dielectric constant model of soil at microwave frequency[J]. Remote Sensing Information, 2015, 30(1): 5–13, 70. doi: 10.3969/j.issn.1000-3177.2015.01.002
    DUAN Xueyang and MOGHADDAM M. Full-wave electromagnetic scattering from rough surfaces with buried inhomogeneities[J]. IEEE Transactions on Geoscience and Remote Sensing, 2017, 55(6): 3338–3353. doi: 10.1109/TGRS.2017.2669897
    DARAWANKUL A and JOHNSON J T. Band-limited exponential correlation function for rough-surface scattering[J]. IEEE Transactions on Geoscience and Remote Sensing, 2007, 45(5): 1198–1206. doi: 10.1109/tgrs.2007.893817
    葛德彪, 闫玉波. 电磁波时域有限差分方法[M]. 3版. 西安: 西安电子科技大学出版社, 2011: 168–256.

    GE Debiao and YAN Yubo. Finite-Difference Time-Domain Method for Electromagnetic Waves[M]. 3rd ed. Xi’an: Xidian University Press, 2011: 168–256.
  • 加载中
图(11)
计量
  • 文章访问数:  2059
  • HTML全文浏览量:  931
  • PDF下载量:  65
  • 被引次数: 0
出版历程
  • 收稿日期:  2019-08-27
  • 修回日期:  2020-04-08
  • 网络出版日期:  2020-05-07
  • 刊出日期:  2020-11-16

目录

    /

    返回文章
    返回