Volume 9 Issue 2
May  2020
Turn off MathJax
Article Contents
Article Navigation >  Journal of Radars  > 2020  >  9(2): 354-362
WEI Wei, ZHU Daiyin, and WU Di. Wavenumber domain algorithm based on the principle of chirp scaling for SAR imaging[J]. Journal of Radars, 2020, 9(2): 354–362. doi: 10.12000/JR19112
Citation: WEI Wei, ZHU Daiyin, and WU Di. Wavenumber domain algorithm based on the principle of chirp scaling for SAR imaging[J]. Journal of Radars, 2020, 9(2): 354–362. doi: 10.12000/JR19112
shu

Wavenumber Domain Algorithm Based on the Principle of Chirp Scaling for SAR Imaging

DOI: 10.12000/JR19112

  • Key Laboratory of Radar Imaging and Microwave Photonics, Ministry of Education, College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China

Funds:  The National Key Research and Development Program of China (2017YFB0502700), The National Natural Science Foundation of China (61671240), The Aeronautical Science Foundation of China (20182052013)
More Information
  • Corresponding author: ZHU Daiyin, zhudy@nuaa.edu.cn
  • Received Date: 2019-12-16
  • Rev Recd Date: 2020-02-13
    • Available Online: 2020-03-02
  • Publish Date: 2020-04-01
    Abstract
  • As a frequency-domain algorithm for Synthetic Aperture Radar (SAR) imaging, the Range Migration Algorithm (RMA) can theoretically achieve optimal performance. However, because its Stolt mapping is performed using pixel-by-pixel convolution, the computational efficiency of RMA is inadequate for massive SAR data processing requirements. In this paper, we propose a modified RMA based on the Principle of Chirp Scaling (PCS). First, SAR echo data is divided along the range direction, and the subswath signal is compensated by the second-order range-azimuth coupling term and high-order terms at the reference distance. Then, the nonlinear Stolt mapping is modified to become linear. Finally, Stolt interpolation is realized using PCS to efficiently resample the processed data. Demonstrating both well-focused performance and high computational efficiency, the proposed PCS-RMA employs only fast Fourier transforms and complex vector multiplication operations to achieve modified Stolt mapping. The processing results of several simulation data and X-band-measured airborne SAR data with a pulse bandwidth of 1.2 GHz verify the effectiveness of the proposed algorithm. The proposed algorithm can also be employed for the rapid processing of missile-borne, spaceborne, and drone-borne SAR data.

     

    • FullText(HTML)
  • loading
    • References(19)
  • [1]
    MOREIRA A, PRATS-IRAOLA P, YOUNIS M, et al. A tutorial on synthetic aperture radar[J]. IEEE Geoscience and Remote Sensing Magazine, 2013, 1(1): 6–43. doi: 10.1109/MGRS.2013.2248301
    [2]
    詹学丽, 王岩飞, 王超, 等. 一种基于脉冲压缩的机载条带SAR重叠子孔径实时成像算法[J]. 雷达学报, 2015, 4(2): 199–208. doi: 10.12000/JR14126

    ZHAN Xueli, WANG Yanfei, WANG Chao, et al. Research on overlapped subaperture real-time imaging algorithm for pulse compression airborne strip SAR system[J]. Journal of Radars, 2015, 4(2): 199–208. doi: 10.12000/JR14126
    [3]
    唐江文, 邓云凯, 王宇, 等. 高分辨率滑动聚束SAR BP成像及其异构并行实现[J]. 雷达学报, 2017, 6(4): 368–375. doi: 10.12000/JR16053

    TANG Jiangwen, DENG Yunkai, WANG Yu, et al. High-resolution slide spotlight SAR imaging by BP algorithm and heterogeneous parallel implementation[J]. Journal of Radars, 2017, 6(4): 368–375. doi: 10.12000/JR16053
    [4]
    胡静秋, 刘发林, 周崇彬, 等. 一种新的基于omega-K算法的稀疏场景压缩感知SAR成像方法[J]. 雷达学报, 2017, 6(1): 25–33. doi: 10.12000/JR16027

    HU Jingqiu, LIU Falin, ZHOU Chongbin, et al. CS-SAR imaging method based on inverse omega-K algorithm[J]. Journal of Radars, 2017, 6(1): 25–33. doi: 10.12000/JR16027
    [5]
    王金波, 唐劲松, 张森, 等. 一种宽带大斜视STOLT插值及距离变标补偿方法[J]. 电子与信息学报, 2018, 40(7): 1575–1582. doi: 10.11999/JEIT171068

    WANG Jinbo, TANG Jinsong, ZHANG Sen, et al. Range scaling compensation method based on STOLT interpolation in broadband squint SAS imaging[J]. Journal of Electronics &Information Technology, 2018, 40(7): 1575–1582. doi: 10.11999/JEIT171068
    [6]
    LIN Yun, HONG Wen, TAN Weixian, et al. Extension of range migration algorithm to squint circular SAR imaging[J]. IEEE Geoscience and Remote Sensing Letters, 2011, 8(4): 651–655. doi: 10.1109/LGRS.2010.2098843
    [7]
    TANG Shiyang, ZHANG Linrang, GUO Ping, et al. An omega-K algorithm for highly squinted missile-borne SAR with constant acceleration[J]. IEEE Geoscience and Remote Sensing Letters, 2014, 11(9): 1569–1573. doi: 10.1109/LGRS.2014.2301718
    [8]
    SHIN H S and LIM J T. Omega-K algorithm for spaceborne spotlight SAR imaging[J]. IEEE Geoscience and Remote Sensing Letters, 2012, 9(3): 343–347. doi: 10.1109/LGRS.2011.2168380
    [9]
    ZHU Daiyin, YE Shaohua, and ZHU Zhaoda. Polar format agorithm using chirp scaling for spotlight SAR image formation[J]. IEEE Transactions on Aerospace and Electronic Systems, 2008, 44(4): 1433–1448. doi: 10.1109/TAES.2008.4667720
    [10]
    FAN Bo, QIN Yuliang, YOU Peng, et al. An improved PFA with aperture accommodation for widefield spotlight SAR imaging[J]. IEEE Geoscience and Remote Sensing Letters, 2015, 12(1): 3–7. doi: 10.1109/LGRS.2014.2322858
    [11]
    LUO Xiulian, DENG Yunkai, WANG R, et al. Image formation processing for sliding spotlight SAR with stepped frequency chirps[J]. IEEE Geoscience and Remote Sensing Letters, 2014, 11(10): 1692–1696. doi: 10.1109/LGRS.2014.2306206
    [12]
    LIU Yongcai, WANG Wei, PAN Xiaoyi, et al. Inverse omega-K algorithm for the electromagnetic deception of synthetic aperture radar[J]. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2016, 9(7): 3037–3049. doi: 10.1109/JSTARS.2016.2543961
    [13]
    NIE Xin, ZHU Daiyin, MAO Xinhua, et al. The application of the principle of chirp scaling in processing stepped chirps in spotlight SAR[J]. IEEE Geoscience and Remote Sensing Letters, 2009, 6(4): 860–864. doi: 10.1109/LGRS.2009.2027212
    [14]
    PIGNOL F, COLONE F, and MARTELLI T. Lagrange-polynomial-interpolation-based keystone transform for a passive radar[J]. IEEE Transactions on Aerospace and Electronic Systems, 2018, 54(3): 1151–1167. doi: 10.1109/TAES.2017.2775924
    [15]
    CUMMING I G and WONG F H. Digital Signal Processing of Synthetic Aperture Radar Data: Algorithms and Implementation[M]. Boston, MA, USA: Artech House, 2005: 225–362.
    [16]
    LANARI R and FORNARO G. A short discussion on the exact compensation of the SAR range-dependent range cell migration effect[J]. IEEE Transactions on Geoscience and Remote Sensing, 1997, 35(6): 1446–1452. doi: 10.1109/36.649799
    [17]
    吴玉峰, 叶少华, 冯大政. 基于方位相位编码的脉内聚束SAR成像方法[J]. 雷达学报, 2018, 7(4): 437–445. doi: 10.12000/JR17114

    WU Yufeng, YE Shaohua, and FENG Dazheng. Intra-pulse spotlight SAR imaging method based on azimuth phase coding[J]. Journal of Radars, 2018, 7(4): 437–445. doi: 10.12000/JR17114
    [18]
    YANG Mingdong, ZHU Daiyin, and SONG Wei. Comparison of two-step and one-step motion compensation algorithms for airborne synthetic aperture radar[J]. Electronics Letters, 2015, 51(14): 1108–1110. doi: 10.1049/el.2015.1350
    [19]
    XING Mengdao, WU Yufeng, ZHANG Y D, et al. Azimuth resampling processing for highly squinted synthetic aperture radar imaging with several modes[J]. IEEE Transactions on Geoscience and Remote Sensing, 2014, 52(7): 4339–4352. doi: 10.1109/TGRS.2013.2281454
    • Relative Articles
    • Supplements(0)
    • Cited By
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索
    Get Citation
    PDF
    XML
    Article views(5258) PDF downloads(702) Cited by()
    Proportional views
    Related

    京ICP备20021838号-8   Supported by: Beijing Renhe Information Technology Co. Ltd     百度统计

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return