Volume 7 Issue 3
Jul.  2018
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Fan Huaitao, Zhang Zhimin, Li Ning. Channel Phase Mismatch Calibration for Multichannel in Azimuth SAR Imaging Based on Eigen-structure Method[J]. Journal of Radars, 2018, 7(3): 346-354. doi: 10.12000/JR17012
Citation: Fan Huaitao, Zhang Zhimin, Li Ning. Channel Phase Mismatch Calibration for Multichannel in Azimuth SAR Imaging Based on Eigen-structure Method[J]. Journal of Radars, 2018, 7(3): 346-354. doi: 10.12000/JR17012

Channel Phase Mismatch Calibration for Multichannel in Azimuth SAR Imaging Based on Eigen-structure Method

DOI: 10.12000/JR17012
Funds:  The National Natural Science Foundation of China (61422113, 61601437)
  • Received Date: 2017-01-24
  • Rev Recd Date: 2017-03-15
  • Publish Date: 2018-06-28
  • As one of the most important means to achieve a High-Resolution and Wide-Swath (HRWS) imaging of the earth, multichannel in azimuth Synthetic Aperture Radar (SAR) have attracted considerable attention in recent years. However, prior to the unambiguous reconstruction of the multichannel SAR signal, each channel needs to be well calibrated, otherwise the performance of the reconstruction processor may degrade or even lose its effectiveness. Accurate baseband Doppler centroid estimation are critical for channel mismatch calibration and high-resolution imaging in the multichannel SAR systems. However, in the multichannel HRWS SAR system, the signal acquired by each channel is under-sampled that renders the traditional Doppler centroid estimation methods obsolete. In this paper, an eigen-structure method has been used to achieve a robust estimation of the baseband Doppler centroid and the phase mismatch in the multichannel SAR system. Processing with simulated and experimental C-band, four-channel airborne SAR data validates the effectiveness of this method.

     

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  • [1]
    Gebert N, Krieger G, and Moreira A. High resolution wide swath SAR imaging with digital beamforming-performance analysis, optimization, system design[C]. Proceedings of the 6th European Conference on Synthetic Aperture Radar, Dresden, Germany, July 2006: 341–344.
    [2]
    Gebert N, de Almeida F, and Krieger G. Airborne demonstration of multichannel SAR imaging[J]. IEEE Geoscience and Remote Sensing Letters, 2011, 8(5): 963–967. DOI: 10.1109/LGRS.2011.2144563
    [3]
    Kim J H, Younis M, Prats-Iraola P, et al. First spaceborne demonstration of digital beamforming for azimuth ambiguity suppression[J]. IEEE Transactions on Geoscience and Remote Sensing, 2013, 51(1): 579–590. DOI: 10.1109/TGRS.2012.2201947
    [4]
    Li Zhenfang, Bao Zheng, Wang Hongyang, et al. Performance improvement for constellation SAR using signal processing techniques[J]. IEEE Transactions on Aerospace and Electronic Systems, 2006, 42(2): 436–452. DOI: 10.1109/TAES.2006.1642562
    [5]
    Zhang Lei, Xing Mengdao, Qiu Chengwei, et al. Adaptive two-step calibration for high resolution and wide-swath SAR imaging[J]. IET Radar,Sonar&Navigation, 2010, 4(4): 548–559.
    [6]
    Zhang Shuangxi, Xing Mengdao, Xia Xianggen, et al. Multichannel HRWS SAR imaging based on range-variant channel calibration and multi-Doppler-direction restriction ambiguity suppression[J]. IEEE Transactions on Geoscience and Remote Sensing, 2014, 52(7): 4306–4327. DOI: 10.1109/TGRS.2013.2281329
    [7]
    张磊, 全英汇, 邢孟道, 等. 一种子空间投影的高分辨宽测绘带SAR成像通道均衡方法[J]. 电子与信息学报, 2010, 32(1): 1–6. DOI: 10.3724/SP.J.1146.2008.01821

    Zhang Lei, Quan Yinghui, Xing Mengdao, et al. An SSP based channel calibration for high-resolution and wide-swath SAR imagery[J]. Journal of Electronics&Information Technology, 2010, 32(1): 1–6. DOI: 10.3724/SP.J.1146.2008.01821
    [8]
    Feng Jin, Gao Canguan, Zhang Yi, et al. Phase mismatch calibration of the multichannel SAR based on azimuth cross correlation[J]. IEEE Geoscience and Remote Sensing Letters, 2013, 10(4): 903–907. DOI: 10.1109/LGRS.2012.2227107
    [9]
    Liu Yanyang, Li Zhenfang, Wang Zhibin, et al. On the baseband Doppler centroid estimation for multichannel HRWS SAR imaging[J]. IEEE Geoscience and Remote Sensing Letters, 2014, 11(12): 2050–2054. DOI: 10.1109/LGRS.2014.2318511
    [10]
    Li Jianbin, Li Xiaoping, Lin Mingfu, et al. Maximum-likelihood-based Doppler centroid estimation algorithm for MC-HRWS SAR system[J]. Electronics Letters, 2014, 50(22): 1630–1631. DOI: 10.1049/el.2014.2723
    [11]
    刘艳阳, 李真芳, 杨桃丽, 等. 一种单星方位多通道高分辨率宽测绘带SAR系统通道相位偏差时域估计新方法[J]. 电子与信息学报, 2012, 34(12): 2913–2919. DOI: 10.3724/SP.J.1146.2012.00562

    Liu Yanyang, Li Zhenfang, Yang Taoli, et al. A novel channel phase bias estimation method for spaceborne along-track multi-channel HRWS SAR in time-domain[J]. Journal of Electronics&Information Technology, 2012, 34(12): 2913–2919. DOI: 10.3724/SP.J.1146.2012.00562
    [12]
    王志斌, 刘艳阳, 李真芳, 等. 基于多普勒谱优化的HRWS SAR系统通道相位偏差估计算法[J]. 电子与信息学报, 2016, 38(12): 3026–3033. DOI: 10.11999/JEIT161038

    Wang Zhibin, Liu Yanyang, Li Zhenfang, et al. Phase bias estimation algorithm for HRWS SAR system in azimuth based on Doppler spectrum optimization[J]. Journal of Electronics&Information Technology, 2016, 38(12): 3026–3033. DOI: 10.11999/JEIT161038
    [13]
    Gebert N. Multi-channel azimuth processing for high-resolution wide-swath SAR imaging[D]. [Ph.D. dissertation], German Aerospace Center, 2009: 20, 22.
    [14]
    Krieger G, Gebert N, and Moreira A. Unambiguous SAR signal reconstruction from nonuniform displaced phase center sampling[J]. IEEE Geoscience and Remote Sensing Letters, 2004, 1(4): 260–264. DOI: 10.1109/LGRS.2004.832700
    [15]
    Friedlander B and Weiss A J. Eigenstructure methods for direction finding with sensor gain and phase uncertainties[C]. Proceedings of International Conference on Acoustics, Speech, and Signal Processing, California, USA, April 1988: 2681–2684.
    [16]
    Guo Xiaojiang, Gao Yesheng, Wang Kaizhi, et al. Improved channel error calibration algorithm for azimuth multichannel SAR systems[J]. IEEE Geoscience and Remote Sensing Letters, 2016, 13(7): 1022–1026. DOI: 10.1109/LGRS.2016.2561961
    [17]
    Cumming I G and Wong F H. Digital Processing of Synthetic Aperture Radar Data: Algorithms and Implementation[M]. Norwood: Artech House, 2005: 194–200.
    [18]
    Lanari R, Zoffoli S, Sansosti E, et al. New approach for hybrid strip-map/spotlight SAR data focusing[J]. IEE Proceedings-Radar,Sonar and Navigation, 2001, 148(6): 363–372. DOI: 10.1049/ip-rsn:20010662
    [19]
    Baumgartner S V and Krieger G. Simultaneous high-resolution wide-swath SAR imaging and ground moving target indication: Processing approaches and system concepts[J]. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2015, 8(11): 5015–5029. DOI: 10.1109/JSTARS.2015.2450019
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