散射中心的時(shí)頻像特征研究

郭琨毅; 牛童瑤; 屈泉酉; 盛新慶

doi:10.11999/JEIT150598

散射中心的時(shí)頻像特征研究

doi: 10.11999/JEIT150598

基金項(xiàng)目:

國(guó)家自然科學(xué)基金面上項(xiàng)目(61471041)

計(jì)量
- 文章訪問數(shù): 1650
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- 被引次數(shù): 0
出版歷程
- 收稿日期: 2015-05-18
- 修回日期: 2015-11-09
- 刊出日期: 2016-02-19

Research on Signatures of Scattering Centers Shown in Time-frequency Representation

Funds:

The National Natural Science Foundation of China (61471041)

摘要

摘要: 散射中心是高頻區(qū)電磁散射的重要特征，其屬性特征，如散射幅度、位置，對(duì)方位的依賴性對(duì)于雷達(dá)成像及目標(biāo)識(shí)別具有重要意義。與其它雷達(dá)圖像相比，時(shí)頻圖像能更完整地反映出散射中心的屬性特征，但目前關(guān)于不同散射中心的時(shí)頻像特征研究還不完整。該文首先基于散射中心模型，從理論上分析了各個(gè)散射中心時(shí)頻像的特征，然后通過全波法電磁計(jì)算得到了典型結(jié)構(gòu)目標(biāo)的散射數(shù)據(jù)，從數(shù)值上驗(yàn)證了對(duì)時(shí)頻圖像特征的理論分析，最后總結(jié)了不同散射中心的時(shí)頻像特征，此結(jié)論有助于從時(shí)頻像中直觀地判斷目標(biāo)的散射中心類型和其對(duì)應(yīng)的物理結(jié)構(gòu)特點(diǎn)，可為基于時(shí)頻像的雷達(dá)目標(biāo)特征提取與識(shí)別提供一定的理論參考。
- 電磁散射 /
- 散射中心 /
- 屬性 /
- 時(shí)頻變換
Abstract: Scattering centers are important features of electromagnetic scattering at high frequencies. The aspect dependency of the amplitude and location of a scattering center has a significant influence on radar imaging and target recognition. Compared with other radar images, the Time-Frequency Representation (TFR) of radar returns more clearly presents features of scattering centers. In this paper, the signatures of TFR of different types of scattering centers are investigated theoretically and numerically. In numerical experiments, the scattering responses of several typical targets are computed by the full-wave numerical method. The conclusion of this paper on signatures of TFR of scattering centers can provide a theoretical reference for the feature extraction and target recognition from TFRs.
- Electromagnetic scattering /
- Scattering centers /
- Attributes /
- Time-frequency transform

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參考文獻(xiàn)(30)

劉擁軍, 葛德彪, 張忠治, 等. 有屬性的散射中心理論及應(yīng)用[J]. 電波科學(xué)學(xué)報(bào), 2004, 18(5): 559-563．

LIU Yongjun, GE Debiao, ZHANG Zhongzhi, et al. The theory of attributed scattering centers[J]. Chinese Journal of Radio Science, 2003, 18(5): 559-563.

張亞軍. 基于屬性散射中心模型的SAR目標(biāo)自動(dòng)識(shí)別[D]. [碩士論文], 西安電子科技大學(xué), 2014.

ZHANG Yajun. Automatic recognition of SAR targets based on attribute scattering center model[D]. [Master dissertation], Xidian University, 2014.

付耀文, 賈宇平, 莊釗文. 基于一維散射中心匹配的雷達(dá)目標(biāo)識(shí)別[J]. 電子學(xué)報(bào), 2006, 34(3): 404-407.

FU Yaowen, JIA Yuping, and ZHUANG Zhaowen. Radar target classification based on one dimensional scattering centers matching[J]. Acta Electronica Sinica, 2006, 34(3): 404-407.

張肖, 周建江, 汪飛. 基于空域?yàn)V波的雷達(dá)目標(biāo)二維散射中心快速提取[J]. 電子與信息學(xué)報(bào), 2014, 36(3): 523-528. doi: 10.3724/SP.J.1146.2013.00365.

ZHANG Xiao, ZHOU Jianjiang, and WANG Fei. Fast extraction of radar target 2D scattering centers based on spatial filtering[J]. Journal of Electronics Information Technology, 2014, 36(3): 523-528. doi: 10.3724/SP.J.1146. 2013.00365.

楊莉. 一維距離像特性分析及目標(biāo)識(shí)別方法研究[D]. [碩士論文], 哈爾濱工業(yè)大學(xué), 2014.

YANG Li. Study of feature analysis and target recognition for high resolution range profile[D]. [Master dissertation], Harbin Institute of Technology, 2014.

賀思三. 雷達(dá)成像中的非理想散射現(xiàn)象分析[D]. [碩士論文], 國(guó)防科學(xué)技術(shù)大學(xué), 2005.

HE Sisan. The analysis of nonideal scattering phenomena in radar imaging[D]. [Master dissertation], National University of Defense Technology, 2005.

CHEN V C. Time-frequency Transforms for Radar Imaging and Signal Analysis[M]. Boston: Artech House, 2001: 23-42.

周洋. 基于小波變換的非局部圖像去噪方法研究[D]. [碩士論文], 西安電子科技大學(xué), 2014.

ZHOU Yang. Non-local image denoising method based on wavelet transform[D]. [Master dissertation], Xidian University, 2014.

黃培康, 殷紅成, 許小劍, 等. 雷達(dá)目標(biāo)特性[M]. 北京: 電子工業(yè)出版社, 2005: 2-7.

HUANG Peikang, YIN Hongcheng, XU Xiaojian, et al. Radar Target Features[M]. Beijing: Publishing House of Electronics Industry, 2005: 2-7.

POTTER L C and MOSES R L. Attributed scattering centers for SAR ATR[J]. IEEE Transactions on Image Processing, 1997, 5(1): 79-91.

POTTER L C, CHING D M, CARRIERE R, et al. A GTD-based parametric model for radar scattering[J]. IEEE Transactions on Antennas and Propagation, 1995, 43(10): 1058-1067.

GUO Kunyi, LI Qifeng, SHENG Xinqing, et al. Sliding scattering center model for extended streamlined targets[J]. Progress In Electromagnetics Research, 2013, 139(3): 499-516.

GUO Kunyi and SHENG Xinqing. A precise recognition approach of ballistic missile warhead and decoy[J]. Journal of Electromagnetic Waves and Applications, 2009, 23(14): 1867-1875.

QU Quanyou, GUO Kunyi, and SHENG Xinqing. An accurate bistatic scattering center model for extended cone- shaped targets[J]. IEEE Transactions on Antennas and Propagation, 2014, 62(10): 5209-5218.

QU Quanyou, GUO Kunyi, and SHENG Xinqing. Scattering centers induced by creeping waves on streamlined cone- shaped targets in bistatic mode[J]. IEEE Antennas and Wireless Propagation Letters, 2015, 14: 462-465.

PATHAK P H, BURNSIDE W D, and MARHEFKA R J. A uniform GTD analysis of the diffraction of electromagnetic waves by a smooth convex surface[J]. IEEE Transactions on Antennas and Propagation, 1980, 28(5): 631642.

CARBOR D. Theory of communication[J]. Journal of the Institute of Electrical Engineers, 1946, 93: 429-457.

劉海燕, 田鋼, 石戰(zhàn)結(jié). 幾種時(shí)頻分析方法的比較和實(shí)際應(yīng)用[J]. CT理論與應(yīng)用, 2015, 24(2): 199-208.

LIU Haiyan, TIAN Gang, and SHI Zhanjie. The comparison of time-frequency analysis methods and their applications [J]. Computerized Tomography Theory and Applications, 2015, 24(2): 199-208.

周劍雄. 光學(xué)區(qū)雷達(dá)目標(biāo)三維散射中心重構(gòu)理論與技術(shù)[D]. [博士論文], 國(guó)防科學(xué)技術(shù)大學(xué), 2006.

ZHOU Jianxiong. The theory and methodology of reconstructing 3D position of scattering centers in the optical region[D]. [Ph.D. dissertation], National University of Defense Technology, 2006.

SHENG X Q, JIN J M, SONG J M, et al. On the formulation of the hybrid finite-element boundary-integral methods for 3D scattering using multi-level fast multipole algorithm[C]. IEEE Antennas and Propagation Society International Symposium, Atlanta, GA, USA, 1998, Vol.1: 236-239.

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