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雷達(dá)目標(biāo)三維散射中心位置正向推導(dǎo)和分析

張磊,  何思遠(yuǎn),  朱國強(qiáng),  張?jiān)迫A,  殷紅成,  閆華

張磊, 何思遠(yuǎn), 朱國強(qiáng), 張?jiān)迫A, 殷紅成, 閆華. 雷達(dá)目標(biāo)三維散射中心位置正向推導(dǎo)和分析[J]. 電子與信息學(xué)報(bào), 2018, 40(12): 2854-2860. doi: 10.11999/JEIT180115
引用本文: 張磊, 何思遠(yuǎn), 朱國強(qiáng), 張?jiān)迫A, 殷紅成, 閆華. 雷達(dá)目標(biāo)三維散射中心位置正向推導(dǎo)和分析[J]. 電子與信息學(xué)報(bào), 2018, 40(12): 2854-2860. doi: 10.11999/JEIT180115
Lei ZHANG, Siyuan HE, Guoqiang ZHU, Yunhua ZHANG, Hongcheng YIN, Hua YAN. Forward Derivation and Analysis for 3-D Scattering Center Position of Radar Target[J]. Journal of Electronics & Information Technology, 2018, 40(12): 2854-2860. doi: 10.11999/JEIT180115
Citation: Lei ZHANG, Siyuan HE, Guoqiang ZHU, Yunhua ZHANG, Hongcheng YIN, Hua YAN. Forward Derivation and Analysis for 3-D Scattering Center Position of Radar Target[J]. Journal of Electronics & Information Technology, 2018, 40(12): 2854-2860. doi: 10.11999/JEIT180115

雷達(dá)目標(biāo)三維散射中心位置正向推導(dǎo)和分析

doi: 10.11999/JEIT180115 cstr: 32379.14.JEIT180115
  • 1.

    武漢大學(xué)電子信息學(xué)院 ??武漢 ??430072

  • 2.

    電磁散射重點(diǎn)實(shí)驗(yàn)室 ??北京 ??100854

基金項(xiàng)目: 國家自然科學(xué)基金(61571333)
詳細(xì)信息
    作者簡介:

    張磊：男，1991年生，博士生，研究方向?yàn)槔走_(dá)目標(biāo)特性及電磁仿真等

    何思遠(yuǎn)：女，1982年生，教授，主要研究方向?yàn)橛?jì)算電磁學(xué)、雷達(dá)目標(biāo)特性與目標(biāo)識別等

    朱國強(qiáng)：男，1959年生，教授，長期從事目標(biāo)電磁散射特性、天線理論與技術(shù)等方面的研究

    張?jiān)迫A：男，1981年生，副教授，主要研究方向?yàn)槿斯る姶挪牧显O(shè)計(jì)與應(yīng)用、新型天線理論與應(yīng)用、電磁散射與目標(biāo)特性等

    殷紅成：男，1967年生，研究員，長期從事電磁散射、雷達(dá)目標(biāo)特性、目標(biāo)識別等方面的研究

    閆華：男，1981年生，高級工程師，主要研究方向?yàn)槟繕?biāo)電磁散射建模與特性分析等

    通訊作者:

    何思遠(yuǎn)　 siyuanhe@whu.edu.cn

  • 中圖分類號: TN955

Forward Derivation and Analysis for 3-D Scattering Center Position of Radar Target

  • 1.

    School of Electronic Information, Wuhan University, Wuhan 430072, China

  • 2.

    National Electromagnetic Scattering Laboratory, Beijing 100854, China

Funds: The National Natural Science of China (61571333)
  • 摘要: 為了更好地將散射中心與目標(biāo)結(jié)構(gòu)聯(lián)系起來，該文基于目標(biāo)幾何模型給出一種在單次和2次耦合散射機(jī)理下雷達(dá)目標(biāo)部件級3維散射中心位置正向推算方法。重點(diǎn)探究了2次耦合散射機(jī)理下強(qiáng)散射情況的射線等效位置確定原理及方法。對其他弱散射情況，應(yīng)用等價(jià)變換等效為強(qiáng)散射情況。最后，使用此位置推算方法推導(dǎo)并分析了直角二面角，鈍角二面角，SLICY, T72坦克模型的部件級3維散射中心位置，并與相應(yīng)的仿真或?qū)崪ySAR圖像進(jìn)行比對以驗(yàn)證此位置推算方法的正確性。
    Abstract: To link better scattering centers with target structures, a forward method is presented to deduce the component-level 3-D scattering center position of radar target under the mechanisms of single and double scattering based on target geometric model. Under the mechanism of double scattering, the principle and method for determining the ray equivalent position is introduced especially under the situation of strong scattering. As for other weak scattering situations, the equivalent transformation is used to transform the weak scattering situations to the strong one. Finally, this position derivation method is applied to the models of right dihedral angle, obtuse dihedral angle, SLICY and T72 tank to deduce and analyze their component-level scattering center positions. The corresponding simulated or actual SAR images are used for contrast to validate the accuracy of the position derivation method.
    • HTML全文

  • 圖  1  不同入射角下垂直入射直角二面角棱邊俯視示意圖

    圖  2  垂直入射鈍角二面角棱邊示意圖及射線等效位置分布圖

    圖  4  直角二面角仿真SAR圖像

    圖  6  面分離的直角二面角仿真SAR圖像

    圖  3  直角二面角幾何模型圖

    圖  8  面分離的鈍角二面角仿真SAR圖像

    圖  7  面分離的鈍角二面角幾何模型圖

    圖  5  面分離的直角二面角幾何模型圖

    圖  9  SLICY幾何模型及實(shí)測SAR圖像與散射中心模型重構(gòu)SAR圖像對比圖

    圖  10  T72坦克幾何模型及仿真SAR圖像與散射中心模型重構(gòu)SAR圖像對比圖

    表  1  SLICY實(shí)測SAR圖像峰值位置與本文方法推算位置對比表

    散射源編號 1 2 3
    部件 三面角(前右) 頂帽(矮) 頂帽(高)
    機(jī)理 3次耦合散射 2次耦合散射 2次耦合散射
    實(shí)測圖像八鄰域峰值提取位置(m) (–0.0173, –1.3806) (–0.2407, –0.0262) (0.6531, –0.6933)
    本文方法推斷投影位置(m) (–0.0043, –1.2648) (–0.1798, –0.0683) (0.5791, –0.7669)
    位置誤差(m) (0.0130, 0.1158) (0.0609, 0.0421) (0.0740, 0.0736)
    下載: 導(dǎo)出CSV

    表  2  T72坦克仿真SAR圖像主要峰值位置與本文方法推算位置對比表

    散射源編號 1 2 3 4
    部件 燃料桶(右) 燃料桶(左) 后方擋板(左) 后方擋板(右)
    機(jī)理 單次散射 單次散射 單次散射 單次散射
    仿真圖像八鄰域峰值提取位置(m) (1.0077, –2.0791) (–1.0594, –2.0791) (–0.4393, –3.1312) (0.3876, –3.1312)
    本文方法推斷投影位置(m) (1.0075, –2.1394) (–1.0022, –2.1394) (–0.4411, –3.1568) (0.4328, –3.1568)
    位置誤差(m) (0.0002, 0.0603) (0.0572, 0.0603) (0.0018, 0.0256) (0.0452, 0.0256)
    下載: 導(dǎo)出CSV
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  • 收稿日期:  2018-01-26
  • 修回日期:  2018-07-05
  • 網(wǎng)絡(luò)出版日期:  2018-07-20
  • 刊出日期:  2018-12-01

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