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距离弯曲情形的超分辨成像及目标特征参量提取

孙长印 保铮

孙长印, 保铮. 距离弯曲情形的超分辨成像及目标特征参量提取[J]. 电子与信息学报, 2001, 23(8): 729-735.
引用本文: 孙长印, 保铮. 距离弯曲情形的超分辨成像及目标特征参量提取[J]. 电子与信息学报, 2001, 23(8): 729-735.
Sun Changyin, Bao Zheng . SUPER-RESOLUTION IMAGING AND TARGET FEATURE EXTRACTION IN THE PRESENCE OF WAVEFRONT CURVATURE EFFECTS[J]. Journal of Electronics & Information Technology, 2001, 23(8): 729-735.
Citation: Sun Changyin, Bao Zheng . SUPER-RESOLUTION IMAGING AND TARGET FEATURE EXTRACTION IN THE PRESENCE OF WAVEFRONT CURVATURE EFFECTS[J]. Journal of Electronics & Information Technology, 2001, 23(8): 729-735.

距离弯曲情形的超分辨成像及目标特征参量提取

SUPER-RESOLUTION IMAGING AND TARGET FEATURE EXTRACTION IN THE PRESENCE OF WAVEFRONT CURVATURE EFFECTS

  • 摘要: PFA算法的性能受到距离弯曲引起的成像误差的影响,传统的处理方法是限制场景的尺寸。本文从超分辨处理的角度出发,对距离弯曲引起的空变的二次相位误差(QPEs)采取精确估计和补偿的方法进行预处理,然后得到超分辨图像及目标特征参量。相位误差的粗估计采用离散多项式相位变换(DPT)方法,而误差精估计则基于RELAX类算法。仿真和实测数据证明了本文方法的有效性。
  • Jakowatz, Charles, et al., Spotlight-Mode Synthet ic Apert ure Radar: A Signal Processing Ap- proach, Bost on, Kluwer Academic Publishers, 1996, 361-363.[2]C. V. Jakowatz, et al., Space-variant post-filt ering for correction of wavefront curvature effects in spot light-mode SAR imagery via polar format ting, SPIE Proc. on Optical Engineeering inAerospace Sensing, Orlando, FL: April,1997, 3070, 33-42.[3]W. Carrara, et al., Spotlight Synthetic Aperture Radar: Signal Processing Algorithms. Boston Art ech House, 1995, Chapter 6. [4]J. Li, P. Stoica, Efficient mixed-spectrum estimat, ion with applications to t arget feature extractionIEEE Trans. on SP, 1996, 44(2), 281-295.[4]J. Li, P. Stoica, An adaptive filtering approach to spectral est imation and SAR imaging. IEEETrans. on SP, 1996, 44(6), 1469-1484.[5]S. Peleg, B. Friedlander, The discrete polynomial-phase transform, IEEE Trans. on SP. 199543(8), 1901-1914.
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出版历程
  • 收稿日期:  1999-07-30
  • 修回日期:  2000-04-03
  • 刊出日期:  2001-08-19

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