Volume 8 Issue 3
Jun.  2019
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Article Navigation >  Journal of Radars  > 2019  >  8(3): 373-381
WANG Yong and HUANG Xin. Research on in-pulse compensation method for imaging ship targets in FMCW-ISAR[J]. Journal of Radars, 2019, 8(3): 373–381. doi: 10.12000/JR18079
Citation: WANG Yong and HUANG Xin. Research on in-pulse compensation method for imaging ship targets in FMCW-ISAR[J]. Journal of Radars, 2019, 8(3): 373–381. doi: 10.12000/JR18079
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Research on In-pulse Compensation Method for Imaging Ship Targets in FMCW-ISAR

DOI: 10.12000/JR18079

  • School of Electronics and Information Engineering, Harbin Institution of Technology, Harbin 150001, China

Funds:  The National Natural Science Foundation of China (61622107, 61871146)
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  • Corresponding author: WANG Yong, wangyong6012@hit.edu.cn
  • Received Date: 2018-09-21
  • Rev Recd Date: 2018-11-20
    • Available Online: 2018-12-03
  • Publish Date: 2019-06-01
    Abstract
  • Given its advantages of low cost, low weight, and low power consumption, Frequency Modulated Continuous Wave-Inverse Synthetic Aperture Radar (FMCW-ISAR) has been widely used for imaging many kinds of targets. Since the FMCW signal can be regarded as a pulse signal whose duty ratio is one and pulse duration is relatively long, the motion of targets usually cannot be neglected. In this circumstance, the stop-go assumption is not valid, so ISAR images obtained using the traditional Range-Doppler (R-D) procedure exhibit two-dimensional blurring, which results in decreased resolution. In this paper, we investigate the blur problems of FMCW-ISAR in imaging ship targets, and construct a target motion model. Then, we analyze the influence of the in-pulse motion component in range profiles and final images. We propose a corresponding in-pulse compensation method to improve the resolution of ISAR images. A comparison with the imaging results of real measured echo data verifies the effectiveness of the proposed method in diminishing the 1-D-profile broadening and improving image quality.

     

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    • References(18)
  • [1]
    陈小龙, 关键, 黄勇, 等. 雷达低可观测动目标精细化处理及应用[J]. 科技导报, 2017, 35(20): 19–27.

    CHEN Xiao-long, GUAN Jian, HUANG Yong, et al. Radar refined processing and its applications for low-observable moving target[J]. Science &Technology Review, 2017, 35(20): 19–27.
    [2]
    保铮, 邢孟道, 王彤. 雷达成像技术[M]. 北京: 电子工业出版社, 2005.

    BAO Zhen, XING Meng-dao, and WANG Tong. Technology of Radar Imaging[M]. Beijing: Publishing House of Electronics Industry, 2005.
    [3]
    CHEN Z P, ZHANG W C, and LING Q Q. A novel phase compensation method for ISAR imaging in wideband radar[J]. Journal of Radars, 2013, 2(1): 23–29. doi: 10.3724/SP.J.1300.2013.13023
    [4]
    李宁, 汪玲, 张弓. 多基ISAR舰船侧视及俯视高分辨率成像方法[J]. 雷达学报, 2012, 1(2): 163–170. doi: 10.3724/SP.J.1300.2012.20021

    LI Ning, WANG Ling, and ZHANG Gong. High-resolution side-view and top-view imaging method of ship targets using multistatic ISAR[J]. Journal of Radars, 2012, 1(2): 163–170. doi: 10.3724/SP.J.1300.2012.20021
    [5]
    ZHANG X K, REN J W, SHAO Z L, et al. Vehicles detection experiments with Ka-band FMCW ISAR[C]. Proceedings of 2017 Progress in Electromagnetics Research Symposium, Singapore, 2017: 291–294.
    [6]
    杨琪, 邓彬, 蒋彦雯, 等. 基于调频连续波的太赫兹频段转台成像方法研究[J]. 空间电子技术, 2013(4): 25–28, 64. doi: 10.3969/j.issn.1674-7135.2013.04.007

    YANG Qi, DENG Bin, JIANG Yan-wen, et al. Study of terahertz rotating platform imaging algorithm based on FMCW[J]. Space Electronic Technology, 2013(4): 25–28, 64. doi: 10.3969/j.issn.1674-7135.2013.04.007
    [7]
    SU F L, SU Y, and GAO J J. Range Doppler imaging for LFMCW ISAR based on azimuth interpolation[C]. Proceedings of the 2012 IEEE 11th International Conference on Signal Processing, Beijing, China, 2012: 2048–2052.
    [8]
    SU F L, YANG H X, and GAO J J. Imaging for inverse synthetic aperture radar with linear frequency modulation continuous wave signal[C]. Proceedings of the 2012 5th International Congress on Image and Signal Processing, Chongqing, China, 2012: 1817–1821.
    [9]
    CHANG W, LI Z H, JIN K, et al. Long-distance imaging with frequency modulation continuous wave and inverse synthetic aperture radar[J]. IET Radar, Sonar & Navigation, 2015, 9(6): 653–659. doi: 10.1049/iet-rsn.2014.0326
    [10]
    CHANG W, LI Z, JIN K, et al. Imaging of space targets in FMCW-ISAR[C]. Proceedings of IET International Radar Conference 2013, Xi’an, China, 2013: 1–4. DOI: 10.1049/CP.2013.0214.
    [11]
    朱小鹏, 张群, 罗迎, 等. 基于调频连续波的双基逆合成孔径雷达研究[J]. 电波科学学报, 2011, 26(4): 771–776.

    ZHU Xiao-peng, ZHANG Qun, LUO Ying, et al. ISAR imaging analysis of bi-static FMCW radar[J]. Chinese Journal of Radio Science, 2011, 26(4): 771–776.
    [12]
    常雯, 李增辉, 杨健. 基于迭代Radon-Wigner变换的FMCW-ISAR目标速度估计及速度补偿[J]. 清华大学学报(自然科学版), 2014, 54(4): 464–468.

    CHANG Wen, LI Zeng-hui, and YANG Jian. Velocity estimation and compensation in FMCW-ISAR based on the iterative Radon-Wigner transform[J]. Journal of Tsinghua University (Science and Technology), 2014, 54(4): 464–468.
    [13]
    GIUSTI and MARTORELLA M. Range Doppler and image autofocusing for FMCW inverse synthetic aperture radar[J]. IEEE Transactions on Aerospace and Electronic Systems, 2011, 47(4): 2807–2823. doi: 10.1109/TAES.2011.6034666
    [14]
    张昆帆, 马德宝, 王丰, 等. 一种新的一维距离像补偿方法[J]. 信息工程大学学报, 2011, 12(4): 452–457. doi: 10.3969/j.issn.1671-0673.2011.04.015

    ZHANG Kun-fan, MA De-bao, WANG Feng, et al. New method of compensation for profile[J]. Journal of Information Engineering University, 2011, 12(4): 452–457. doi: 10.3969/j.issn.1671-0673.2011.04.015
    [15]
    刘磊. 逆合成孔径雷达二维及三维成像方法研究[D]. [博士论文], 西安电子科技大学, 2016.

    LIU Lei. Study of two-dimensional and three-dimensional inverse synthetic aperture radar imaging methods[D]. [Ph.D. dissertation], Xidian University, 2016.
    [16]
    唐鹏飞, 林钱强, 袁斌, 等. 基于积分二次相位函数和分数阶Fourier变换的多分量LFM信号参数估计[J]. 信号处理, 2012, 28(7): 926–931. doi: 10.3969/j.issn.1003-0530.2012.07.003

    TANG Peng-fei, LIN Qian-qiang, YUAN Bin, et al. Parameter estimation of multi-component LFM signals using integrated quadratic phase function and fractional Fourier transform[J]. Signal Processing, 2012, 28(7): 926–931. doi: 10.3969/j.issn.1003-0530.2012.07.003
    [17]
    涂志宇. 高速运动目标逆合成孔径雷达运动补偿研究[D]. [硕士论文], 南京理工大学, 2004.

    TU Zhi-yu. Research on motion compensation of inverse synthetic aperture radar for high-speed-moving targets[D]. [Master dissertation], Nanjing University of Science & Technology, 2004.
    [18]
    刘永坦. 雷达成像技术[M]. 哈尔滨: 哈尔滨工业大学出版社, 1999: 187–194.

    LIU Yong-tan. Radar Imaging Technology[M]. Harbin: Harbin Institute of Technology Press, 1999: 187–194.
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