一种大转角SAR图像散射中心各向异性提取方法

高悦欣; 李震宇; 盛佳恋; 邢孟道

doi:10.11999/JEIT151261

一种大转角SAR图像散射中心各向异性提取方法

doi: 10.11999/JEIT151261

基金项目:

高等学校博士学科点专项科研基金(优先发展领域) (20120203130001)

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- 被引次数: 0
出版历程
- 收稿日期: 2015-11-09
- 修回日期: 2016-04-19
- 刊出日期: 2016-08-19

Extraction Method for Anisotropy Characteristic of Scattering Center in Wide-angle SAR Imagery

Funds:

Specialized Research Fund for the Doctoral Program of Higher Education (SRFDP)(20120203130001)

摘要

摘要: 基于各向异性特性反映了散射中心本身属性，该文提出一种大转角SAR条件下提取散射中心各向异性特性的算法。首先根据属性散射中心模型分析单个散射中心的回波构成；之后以单位矩阵作为标准正交基，将各向异性特性的估计转化为求解散射中心幅度变化的逆问题；再利用散射中心幅度变化的实数特性与连续性对该逆问题进行约束求解，实现了对散射中心各向异性特性的提取。Matlab仿真和电磁计算数据的处理结果验证了算法的准确性以及稳定性；与现有算法对比，所提算法运算效率高。
- 大转角SAR /
- 散射中心 /
- 各向异性
Abstract: Based on the fact that anisotropy characteristic represents some intrinsic properties of scattering centers, an algorithm for extracting anisotropy characteristic of scattering centers is proposed when wide-angle SAR is used. Firstly, the components of the echo from a single scattering center are analyzed based on attributed scattering center model. Secondly, the estimation of anisotropy characteristic is transformed into an inverse issue of solving variation of single scattering centers amplitude by using identity matrix as orthonormal basis. Finally, the inverse issue is solved under the constraints that the amplitude of scattering centers should be real and continuous. As a result, anisotropy characteristic is extracted from the solution of the inverse issue. Estimation results of both Matlab simulated and electromagnetic computation data validate that the proposed algorithm is not only precise but also robust. Moreover, the proposed method is more efficient compared with traditional methods.
- Wide-angle SAR /
- Scattering center /
- Anisotropy

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参考文献(28)

ASH J N, ERTINE, POTTER L C, et al. Wide-angle synthetic aperture radar imaging: models and algorithms for anisotropic scattering[J]. IEEE Signal Processing Magazine, 2014, 31(4): 16-26. doi: 10.1109/MSP.2014.2311828.

MJDAT, IVANA S,NHON N ?, et al. Sparsity-driven synthetic aperture radar imaging: Reconstruction, autofocusing, moving targets, and compressed sensing[J]. IEEE Signal Processing Magazine, 2014, 31(4): 27-40. doi: 10.1109/MSP.2014.2312834.

KUSH R V, MJDAT C, JOHN W F, et al. Sparse representation in structured dictionaries with application to synthetic aperture radar[J]. IEEE Transactions on Signal Processing, 2008, 56(8): 3548-3561. doi: 10.1109/TSP.2008. 919392.

KIM A, FISHER J, and WILLSKY A. Detection and analysis of anisotropic scattering in SAR data[J]. Multidimensional Systems and Signal Processing, 2003, 14(1): 49-82. doi: 10.1023/A:1022268908156.

姬伟杰, 童创明. 二维海面上舰船目标电磁散射及合成孔径雷达成像技术研究[J]. 物理学报, 2012, 61(16): 11-18. doi: 10.7498/aps.61.160301.

JI Weijie and TONG Chuangming. Research on electromagnetic scattering computation and synthetic aperture radar imaging of ship located on two-dimensional ocean surface[J]. Acta Physica Sinica, 2012, 61(16): 11-18. doi: 10.7498/aps.61.160301.

周剑雄. 光学区雷达目标三维散射中心重构理论与技术[D]. [博士论文], 国防科学技术大学, 2006. doi: 10.7666/d. y1101904.

ZHOU Jianxiong. The theory and technology on reconstruction of 3D scattering center from optical region radar[D]. [Ph.D. dissertation], National University of Defense Technology, 2006. doi: 10.7666/d.y1101904.

段佳, 张磊, 邢孟道, 等. 合成孔径雷达目标特征提取新方法[J]. 西安电子科技大学学报(自然科学版), 2014, 41(4): 13-19. doi: 10.3969/j.issn.1001-2400.2014.04.003.

DUAN Jia, ZHANG Lei, XING Mengdao, et al. Novel feature extraction method for synthetic aperture radar targets[J]. Journal of Xidian University (Natural Science), 2014, 41(4): 13-19. doi: 10.3969/j.issn.1001-2400.2014.04.003.

段佳, 张磊, 盛佳恋, 等. 独立属性散射中心参数降耦合估计方法[J]. 电子与信息学报, 2012, 34(8): 1853-1859. doi: 10. 3724/SP.J.1146.2011.01302.

DUAN Jia, ZHANG Lei, SHENG Jialian, et al. Parameters decouple and estimation of independent attributed scattering centers[J]. Journal of Electronics Information Technology, 2012, 34(8): 1853-1859. doi: 10.3724/SP.J.1146.2011.01302.

吴敏, 张磊, 段佳, 等. 基于属性散射中心模型的SAR超分辨成像算法[J]. 宇航学报, 2014, 35(9): 1058-1064. doi: 10.3873/ j.issn.1000-1328.2014.09.011.

WU Min, ZHANG Lei, DUAN Jia, et al. Super-resolution SAR imaging algorithm based on attribute scattering center model[J]. Journal of Astronautics, 2014, 35(9): 1058-1064. doi: 10.3873/j.issn.1000-1328.2014.09.011.

李飞, 纠博, 刘宏伟, 等. 基于稀疏表示的SAR图像属性散射中心参数估计算法[J]. 电子与信息学报, 2014, 36(4): 931-937. doi: 10.3724/SP.J.1146.2013.00576.

LI Fei, JIU Bo, LIU Hongwei, et al. Sparse representation based algorithm for estimation of attributed scattering center parameter on SAR imagery[J]. Journal of Electronics Information Technology, 2014, 36(4): 931-937. doi: 10.3724/ SP.J.1146.2013.00576.

DUAN Jia, ZHANG Lei, and XING Mengdao. Polarimetric target decomposition based on attributed scattering center model for synthetic aperture radar targets[J]. IEEE Geoscience and Remote Sensing Letters, 2014, 11(12): 2095-2099. doi: 10.1109/LGRS.2014.2320053.

李飞, 纠博, 王英华, 等. 一种SAR目标属性特征提取算法[J]. 西安电子科技大学学报(自然科学版), 2015, 42(3): 15-21. doi: 10.3969/j.issn.1001-2400.2015.03.003.

LI Fei, JIU Bo, WANG Yinghua, et al. Novel method for attributed feature extraction from SAR imagery[J]. Journal of Xidian University (Natural Science), 2015, 42(3): 15-21. doi: 10.3969/j.issn.1001-2400.2015.03.003.

DANE F F and MICHAEL A S. A high-frequency multipeak model for wide-angle SAR imagery[J]. IEEE Transactions on Geoscience and Remote Sensing, 2013, 51(7): 4279-4291. doi: 10.1109/TGRS.2012.2226732.

POTTER L C and MOSES R L. Attributed scattering centers for SAR ATR[J]. IEEE Transactions on Image Processing, 1997, 5(1): 79-91. doi: 10.1109/83.552098.

陶勇, 胡卫东. 基于方位特性表征的属性散射中心模型参数估计方法[J]. 信号处理, 2010, 26(5): 736-740. doi: 10.3969/ j.issn.1003-0530.2010.05.017.

TAO Yong and HU Weidong. An aspect-dependence characteristics-based approach for parameter estimation of attribute scattering center model[J]. Signal Processing, 2010, 26(5): 736-740. doi: 10.3969/j.issn.1003-0530.2010.05.017.

Gerry M J, Potter L C, Gupta J I, et al. A parametric model for synthetic aperture radar measurements[J]. IEEE Transactions on Antennas and Propagation, 1999, 47(7): 1179-1188. doi: 10.1109/8.785750.

IVANA S, MJDAT C, and WILLIAM C K. Joint space aspect reconstruction of wide-angle SAR exploiting sparsity [C]. Proceedings of the SPIE Defense and Security Symposium, Orlando, FL, USA, 2008: 697005. doi: 10.1117/ 12.786288.

林达, 徐新, 潘雪峰, 等. 一种新的MSTAR SAR图像分割方法[J]. 武汉大学学报(信息科学版), 2014, 39(11): 1314-1317. doi: 10.13203/j.whugis20130262.

LIN Da, XU Xin, PAN Xuefeng, et al. Segmentation of SAR image of MSTAR SAR chips based on attributed scattering center feature and markov random field[J]. Geomatics and Information Science of Wuhan University, 2014, 39(11): 1314-1317. doi: 10.13203/j.whugis20130262.

LARS M H U, HANS H, and GUNNAR S. Synthetic- aperture radar processing using fast factorized back- projection[J]. IEEE Transactions on Aerospace and Electronic Systems, 2003, 39(3): 760-776. doi: 10.1109/TAES. 2003.1238734.

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