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基于载体对消方法的缝隙小角域散射特性研究

赵京城 杨涛 付鑫如 高旭 柴建忠

赵京城, 杨涛, 付鑫如, 等 . 基于载体对消方法的缝隙小角域散射特性研究[J]. 北京航空航天大学学报, 2018, 44(7): 1554-1561. doi: 10.13700/j.bh.1001-5965.2017.0498
引用本文: 赵京城, 杨涛, 付鑫如, 等 . 基于载体对消方法的缝隙小角域散射特性研究[J]. 北京航空航天大学学报, 2018, 44(7): 1554-1561. doi: 10.13700/j.bh.1001-5965.2017.0498
ZHAO Jingcheng, YANG Tao, FU Xinru, et al. Scattering characteristics of slit based on carrier cancellation method in small angular domain[J]. Journal of Beijing University of Aeronautics and Astronautics, 2018, 44(7): 1554-1561. doi: 10.13700/j.bh.1001-5965.2017.0498(in Chinese)
Citation: ZHAO Jingcheng, YANG Tao, FU Xinru, et al. Scattering characteristics of slit based on carrier cancellation method in small angular domain[J]. Journal of Beijing University of Aeronautics and Astronautics, 2018, 44(7): 1554-1561. doi: 10.13700/j.bh.1001-5965.2017.0498(in Chinese)

基于载体对消方法的缝隙小角域散射特性研究

doi: 10.13700/j.bh.1001-5965.2017.0498
详细信息
    作者简介:

    赵京城  男, 博士, 讲师, 硕士生导师。主要研究方向:微波毫米波成像、微波数字信号处理、辐射散射测量

    杨涛  男, 硕士研究生。主要研究方向:微波毫米波测量及成像、VxWorks系统嵌入式应用-雷达模拟器

    通讯作者:

    赵京城.E-mail:19644928@qq.com

  • 中图分类号: V218

Scattering characteristics of slit based on carrier cancellation method in small angular domain

More Information
  • 摘要:

    缝隙散射是隐身飞机散射的重要组成部分,已有的缝隙散射研究并未给出小角域(-30°~30°)入射时缝隙散射的结果。基于叠加原理的载体对消方法应用于缝隙散射源的电磁散射计算中,可以更精确地研究缝隙的电磁散射特性。通过单缝隙板的一维成像验证了载体对消方法的有效性和准确性,然后研究了在10 GHz频率下,缝隙散射在小角域内随宽度、长度的变化规律,以及极化特性。不同缝隙宽度的研究结果表明:在小角域内,当缝隙宽度小于1/4波长时,水平极化下缝隙散射比垂直极化下大,而当缝隙宽度大于1/4波长时,水平极化下缝隙散射比垂直极化下小;当缝隙宽度增大时,缝隙在垂直极化下的雷达散射截面(RCS)增长速度更快。不同缝隙长度的研究结果表明:在小角域内,缝隙电磁散射均值随着缝隙长度(200~1 000 mm)的增加而增加,散射均值的大致范围:-22.2~-8.4 dBsm(水平极化),-27.3~-13.3 dBsm(垂直极化);在小角域内,2种极化下,可拟合出RCS均值与缝隙长度的关系,得到某一缝隙长度的RCS,可计算出不同缝隙长度对应的RCS的大致范围。

     

  • 图 1  单缝隙板的计算模型

    Figure 1.  Calculation model of a plate with slit

    图 2  光板和单缝隙板的RCS随入射角变化

    Figure 2.  RCS of a plate and a plate with slit versus incidence angle

    图 3  光板、单缝隙板、对消后缝隙的一维像

    Figure 3.  One-dimensional images of a plate, a plate with slit, and slit after cancellation

    图 4  变宽度单缝隙计算模型

    Figure 4.  Calculation model of single slit with variable width

    图 5  变长度单缝隙计算模型

    Figure 5.  Calculation model of single slit with variable length

    图 6  矢量对消前后不同宽度单缝隙的RCS(HH极化)

    Figure 6.  RCS of single slit with different width before and after vector cancellation (HH polarization)

    图 7  矢量对消前后不同宽度单缝隙的RCS(VV极化)

    Figure 7.  RCS of single slit with different width before and after vector cancellation (VV polarization)

    图 8  矢量对消前后不同长度单缝隙的RCS(HH极化)

    Figure 8.  RCS of single slit with different length before and after vector cancellation (HH polarization)

    图 9  矢量对消前后不同长度单缝隙的RCS(VV极化)

    Figure 9.  RCS of single slit with different length before and after vector cancellation (VV polarization)

    图 10  小角域RCS均值随缝隙宽度的变化

    Figure 10.  Variation of RCS mean with slit width in small angular domain

    图 11  不同角域下RCS均值随缝隙长度的变化

    Figure 11.  Variation of RCS mean with slit length in different angular domains

    表  1  不同宽度单缝隙RCS均值

    Table  1.   RCS means of single slit with different width

    缝隙宽度/mm RCS均值/dBsm
    -30°~30°入射(HH极化) -30°~30°入射(VV极化) -15°~15°入射(HH极化) -15°~15°入射(VV极化)
    1 -35.324 -52.172 -35.108 -51.829
    3 -28.099 -35.902 -27.904 -35.252
    5 -22.185 -27.292 -22.042 -26.600
    8 -16.632 -18.450 -16.412 -17.666
    12 -12.669 -9.787 -12.211 -8.857
    16 -10.349 -5.926 -9.524 -4.842
    下载: 导出CSV

    表  2  不同长度单缝隙RCS均值

    Table  2.   RCS means of single slit with different length

    缝隙长度/mm RCS均值/dBsm
    -30°~30°入射(HH极化) -30°~30°入射(VV极化) -90°~90°入射(HH极化) -90°~90°入射(VV极化)
    200 -22.217 -27.297 -21.690 -37.478
    300 -19.108 -23.837 -18.464 -34.365
    400 -16.321 -21.282 -15.720 -31.694
    500 -14.465 -19.365 -13.840 -29.822
    600 -13.097 -17.835 -12.358 -28.306
    700 -11.522 -16.421 -10.772 -26.810
    800 -10.400 -15.282 -9.656 -25.722
    900 -9.438 -14.242 -8.687 -24.635
    1 000 -8.436 -13.336 -7.560 -23.632
    下载: 导出CSV
  • [1] 何国瑜, 卢才成, 洪家才, 等.电磁散射的计算和测量[M].北京:北京航空航天大学出版社, 2006:19-20.

    HE G Y, LU C C, HONG J C, et al.Calculation and measurement of electromagnetic scattering[M].Beijing:Beihang University Press, 2006:19-20(in Chinese).
    [2] 袁宁, 聂小春, 梁昌洪.有限厚导电平板上任意缝隙的耦合特性分析[J].电波科学学报, 1999, 14(3):261-267. http://www.cqvip.com/QK/96568X/199903/3646349.html

    YUAN N, NIE X C, LIANG C H.Analysis of coupling properties of an arbitrary slit in a thick conducting plate[J].Chinese Journal of Radio Science, 1999, 14(3):261-267(in Chinese). http://www.cqvip.com/QK/96568X/199903/3646349.html
    [3] 朱劲松, 于洋, 王宝发.飞行器结构缝隙电磁散射问题的研究[J].北京航空航天大学学报, 1999, 25(1):99-102. http://mall.cnki.net/magazine/Article/ZDYK199604003.htm

    ZHU J S, YU Y, WANG B F.Research on electromagnetic scattering for aircraft structural slot[J].Journal of Beijing University of Aeronautics and Astronautics, 1999, 25(1):99-102(in Chinese). http://mall.cnki.net/magazine/Article/ZDYK199604003.htm
    [4] 柴建忠, 高旭, 刘学强, 等.几种载体表面缝隙对雷达目标特性的影响[J].南京航空航天大学学报, 2014, 46(4):567-572. http://www.oalib.com/paper/5050366

    CHAI J Z, GAO X, LIU X Q, et al.Effect of gaps in different surfaces on radar target characteristic[J].Journal of Nanjing University of Aeronautics and Astronautics, 2014, 46(4):567-572(in Chinese). http://www.oalib.com/paper/5050366
    [5] SENIOR T B A, SARABANDI K, NATZKE J R, et al.Scattering by a narrow gap[J].IEEE Transactions on Antennas & Propagation, 1989, 38(7):1102-1110. https://ieeexplore.ieee.org/document/55624/
    [6] SHENG X Q, YUANG K N, CHAN C H, et al.Scattering from a large body with cracks and cavities by the fast and accurate finite-element boundary-integral method[J].IEEE Transactions On Antennas & Propagation, 2000, 48(8):1153-1160. https://ieeexplore.ieee.org/document/884482/
    [7] DOMINEK A K, SHAMANSKY H T, WANG N, et al.Scattering from three-dimensional cracks[J].IEEE Transactions on Antennas & Propagation, 1989, 37(5):586-591. https://ieeexplore.ieee.org/document/24186/
    [8] PARK T J, KANG S H, EOM H J.TE scattering from a slit in a thick conducting screen:Revisited[J].IEEE Transactions on Microwave Theory & Techniques, 1994, 42(1):895-899. https://ieeexplore.ieee.org/document/272309/
    [9] 黄沛霖, 马冬立, 武哲.低RCS齿形挂架参数选择研究[J].北京航空航天大学学报, 2001, 27(3):293-296. http://bhxb.buaa.edu.cn/CN/abstract/abstract11024.shtml

    HUANG P L, MA D L, WU Z.Research on parameter selection of low RCS serrated pylon[J].Journal of Beijing University of Aeronautics and Astronautics, 2001, 27(3):293-296(in Chinese). http://bhxb.buaa.edu.cn/CN/abstract/abstract11024.shtml
    [10] 刘战合, 黄沛霖, 武哲.MLFMA分析表面不连续特征散射特性[J].合肥工业大学学报(自然科学版), 2009, 32(9):1430-1435. https://www.researchgate.net/profile/Zhixiong_Gong/publication/282943868_Study_on_underwater_acoustic_scattering_of_a_Bessel_beam_by_rigid_objects_with_arbitrary_shapes/links/56238d5808aea35f26867cc0.pdf?origin=publication_list

    LIU Z H, HUANG P L, WU Z.Analysis of scattering characteristics of surface discrete characters with MLFMA[J].Journal of Hefei University of Technology(Natural Science), 2009, 32(9):1430-1435(in Chinese). https://www.researchgate.net/profile/Zhixiong_Gong/publication/282943868_Study_on_underwater_acoustic_scattering_of_a_Bessel_beam_by_rigid_objects_with_arbitrary_shapes/links/56238d5808aea35f26867cc0.pdf?origin=publication_list
    [11] 黄沛霖, 刘战合.飞行器表面缝隙电磁散射特性研究[J].航空学报, 2008, 29(3):675-680. http://www.cqvip.com/qk/91925X/200803/27282544.html

    HUANG P L, LIU Z H.Research on electromagnetic scattering characteristics of slits on aircraft[J].Acta Aeronautica et Astronautica Sinica, 2008, 29(3):675-680(in Chinese). http://www.cqvip.com/qk/91925X/200803/27282544.html
    [12] 张振利, 倪维立.缝隙及其与边缘的相互作用对目标散射的影响[J].电波科学学报, 2001, 16(3):301-305. http://www.wanfangdata.com.cn/details/detail.do?_type=degree&id=Y369541

    ZHANG Z L, NI W L.The scattering by gaps and the multiple scattering between gaps and edges[J].Chinese Journal of Radio Science, 2001, 16(3):301-305(in Chinese). http://www.wanfangdata.com.cn/details/detail.do?_type=degree&id=Y369541
    [13] 赵京城. 一种弱散射目标RCS测量方法: 201510760592. 1[P]. 2017-03-01.

    ZHAO J C. A kind of measurement method with weak scattering target RCS: 201510760592. 1[P]. 2017-03-01(in Chinese).
    [14] 贾云峰.FEKO在雷达散射截面计算中的应用[J].中国制造业信息化, 2008(2):59-61. http://www.cqvip.com/qk/98238A/200802/26675954.html

    JIA Y F.FEKO application in radar scattering cross section calculation[J].Manufacture Information Engineering of China, 2008(2):59-61(in Chinese). http://www.cqvip.com/qk/98238A/200802/26675954.html
    [15] 吕杰, 莫锦军, 袁乃昌.基于FEKO的微波成像研究[J].微波学报, 2010(8):598-600. http://cdmd.cnki.com.cn/Article/CDMD-10614-1011192649.htm

    LV J, MO J J, YUAN N C.Research on microwave imaging based on FEKO[J].Journal of Microwave, 2010(8):598-600(in Chinese). http://cdmd.cnki.com.cn/Article/CDMD-10614-1011192649.htm
    [16] 刘战合, 黄沛霖, 高旭, 等.MLFMA用于不连续特征多频散射特性研究[J].空军工程大学学报(自然科学版), 2009, 10(2):60-65. http://www.cqvip.com/QK/90962X/200909/31700117.html

    LIU Z H, HUANG P L, GAO X, et al.Multi-waves scattering characteristic of gaps in aircraft surface with MLFMA[J].Journal of Air Force Engineering University(Natural Science Edition), 2009, 10(2):60-65(in Chinese). http://www.cqvip.com/QK/90962X/200909/31700117.html
    [17] 刘战合, 蒋胜矩, 姬金祖, 等.基于MLFMA的表面台阶多频散射特性[J].探测与控制学报, 2009, 31(z1):20-24. doi: 10.3969/j.issn.1008-1194.2009.z1.007

    LIU Z H, JIANG S J, JI J Z, et al.Multi-frequencies scattering characteristic of steps in surface based on MLFMA[J].Journal of Detection & Control, 2009, 31(z1):20-24(in Chinese). doi: 10.3969/j.issn.1008-1194.2009.z1.007
    [18] 高旭, 刘战合, 武哲.缝隙目标电磁散射特性试验[J].航空学报, 2008, 29(6):1497-1501. https://www.cnki.com.cn/lunwen-2004060050.html

    GAO X, LIU Z H, WU Z.Experiment on scattering characteristics of serrate gap[J].Acta Aeronautica et Astronautica Sinica, 2008, 29(6):1497-1501(in Chinese). https://www.cnki.com.cn/lunwen-2004060050.html
    [19] 王湃, 董硕, 周永柱, 等.多层快速多级子分析三维复杂目标的谐振区电磁散射特性[J].北京大学学报(自然科学版), 2006, 42(3):395-400. http://www.cqvip.com/qk/94075X/20063/21988041.html

    WANG P, DONG S, ZHOU Y Z, et al.Multilayer fast multilevel analysis of resonance region electromagnetic scattering from three-dimensional complex target[J].Journal of Peking University (Natural Science Edition), 2006, 42(3):395-400(in Chinese). http://www.cqvip.com/qk/94075X/20063/21988041.html
    [20] 桑建华, 张宗斌, 王烁.低RCS飞行器表面弱散射源研究[J].航空工程进展, 2012, 3(3):257-262. http://www.cqvip.com/QK/89615X/201203/43028912.html

    SANG J H, ZHANG Z B, WANG S.Research on the radar cross section of weak scatters on stealth vehicle[J].Advances in Aeronautical Science and Engineering, 2012, 3(3):257-262(in Chinese). http://www.cqvip.com/QK/89615X/201203/43028912.html
    [21] 马风国, 高飞, 刘其中, 等.流基混合法分析表面波散射[J].电波科学学报, 1999, 14(2):186-190. https://www.cnki.com.cn/lunwen-2007184404.html

    MA F G, GAO F, LIU Q Z, et al.Analysis of surface-wave scattering by current-based hybrid method[J].Journal of Radio Science, 1994, 14(2):186-190(in Chinese). https://www.cnki.com.cn/lunwen-2007184404.html
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  • 收稿日期:  2017-07-20
  • 录用日期:  2017-10-20
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