一种基于快速分解后向投影的条带SAR成像新方法

李浩林; 张磊; 邢孟道; 保铮

doi:10.11999/JEIT141633

一种基于快速分解后向投影的条带SAR成像新方法

doi: 10.11999/JEIT141633

基金项目:

国家自然科学基金(61301280)

计量
- 文章访问数: 1689
- HTML全文浏览量: 220
- PDF下载量: 650
- 被引次数: 0
出版历程
- 收稿日期: 2014-12-25
- 修回日期: 2015-03-23
- 刊出日期: 2015-08-19

Innovative Strategy for Stripmap SAR Imaging Using Fast Factorized Back-projection

摘要

摘要: 快速分解后向投影(Fast Factorized Back-Projection, FFBP)最初用于超宽带SAR成像，并在聚束SAR信号处理领域取得了巨大的成功。然而，由于积分孔径和角域升采样的限制，FFBP算法难以直接用于条带SAR处理。为了提高FFBP算法在条带SAR处理的实用性，该文从积分孔径和角域波数带宽的角度出发，提出一种适用于条带SAR处理的重叠图像法。该方法极大地保留FFBP算法的运算效率，有效地避免因角域升采样带来数据量大的问题。最后，通过斜视条带SAR仿真实验验证了该方法的有效性。
- 合成孔径雷达 /
- 后向投影积分 /
- 快速分解后向投影 /
- 积分孔径 /
- 角波数带宽
Abstract: Fast Factorized Back-Projection (FFBP) is originally developed for Ultra-WideBand (UWB) Synthetic Aperture Radar (SAR), and it shows great success for spotlight SAR signal processing. However, its implementation is not straightforward for stripmap SAR due to the limitation of integration aperture and angular upsampling. To investigate the applicability of FFBP to stripmap SAR, this paper describes a reasonable implementation of overlapped-image method based on integration aperture and angular wavenumber bandwidth. This approach retains high efficiency of the original FFBP. Finally, the simulated squinted SAR data are utilized to verify the effectiveness of the proposed method.
- SAR /
- Back-Projection (BP) integration /
- Fast Factorized Back-Projection (FFBP) /
- Integration aperture /
- Angular wavenumber bandwidth

HTML全文

参考文献(21)

Cumming I G and Wong F H. Digital Signal Processing of Synthetic Aperture Radar Data: Algorithms and Implementation[M]. Boston, MA: Artech House, 2005: 5-7.

Shippey G, Banks S, and Pihl J. SAS image reconstruction using fast polar back projection: comparisons with fast factored back projection and Fourier-domain imaging[C]. IEEE Oceans 2005-Europe, Brest, France, 2005: 96-101.

Jakowatz C V and Doren N. Comparison of polar formatting and back-projection algorithms for spotlight-mode SAR image formation[J]. SPIE, 2006, Vol. 6237: 62370H-1- 62370H-7.

胡建民, 王岩飞, 李和平. 基于回波数据的超高分辨率SAR通道相位误差估计与补偿[J]. 电子与信息学报, 2012, 34(7): 1602-1608.

Hu Jian-min, Wang Yan-fei, and Li He-ping. Channel phase error estimation and compensation for ultra-high resolution SAR based on echo data[J]. Journal of Electronics Information Technology, 2012, 34(7): 1602-1608.

吴明宇, 杨桃丽, 吴顺君, 等. 星载多通道高分辨率宽测绘带SAR系统运动目标检测方法[J]. 电子与信息学报, 2014, 36(2): 441-444.

Wu Ming-yu, Yang Tao-li, Wu Shun-jun, et al.. Ground moving target indication for spaceborne multi-channel high resolution wide swath SAR system[J]. Journal of Electronics Information Technology, 2014, 36(2): 441-444.

冉金和, 张剑云, 武拥军. 机载并行双站大斜视SAR两步式成像算法[J]. 电子与信息学报, 2014, 36(5): 1036-1043.

Ran Jin-he, Zhang Jian-yun, and Wu Yong-jun. Two-step imaging algorithm for airborne parallel high squint SAR[J]. Journal of Electronics Information Technology, 2014, 36(5): 1036-1043.

潘舟浩, 李道京, 刘波, 等. 基于BP 算法和时变基线的机载InSAR 数据处理方法研究[J]. 电子与信息学报, 2014, 36(7): 1585-1591.

Pan Zhou-hao, Li Dao-jing, Liu Bo, et al.. Processing of the airborne InSAR data based on the BP algorithm and the time-varying baseline[J]. Journal of Electronics Information Technology, 2014, 36(7): 1585-1591.

Gorham L A, Majumder U K, Buxa P et al.. Implementation and analysis of a fast backprojection algorithm[J]. SPIE, 2006, Vol. 6237: 62370G-1-62370G-8.

Yegulalp A F. Fast backprojection algorithm radar for synthetic aperture radar[C]. Proceedings of IEEE Radar Conference, Waltham, MA, USA, 1999: 60-65.

Ulander L M H, Hellsten H, and Stenstr?m G. Synthetic-aperture radar processing using fast factorized back-projection[J]. IEEE Transactions on Aerospace and Electronic Systems, 2003, 39(3): 760-776.

Carrara W G, Goodman R S, and Majewski R M. Spotlight Synthetic Aperture Radar: Signal Processing Algorithm[M]. Boston, MA: Artech House, 1995.

Ulander L M H, Fr?lind P O, and Mursin D. Fast factorized backprojection algorithm for processing microwave SAR data[C]. Proceedings of 6th European Conference on Synthetic Aperture Radar, Dresden, Germany, 2006: 577-580.

Moon K and Long D G. A new factorized backprojection algorithm for stripmap synthetic aperture radar[J]. Positioning, 2013, 4(1): 42-56.

Fr?lind P O and Ulander L M H. Evaluation of angular interpolation kernels in fast back-projection SAR processing[J]. IEE Proceedings-Radar, Sonar and Navigation, 2006, 153(3): 243-249.

Zhang Lei, Li Hao-lin, and Qiao Zhi-jun. A fast BP algorithm with wavenumber spectrum fusion for high-resolution spotlight SAR imaging[J]. IEEE Geoscience and Remote Sensing Letters, 2014, 11(9): 1460-1464.

李浩林, 张磊, 杨磊. 一种改进的快速分解后向投影SAR成像算法[J]. 电子与信息学报, 2013, 35(6): 1435-1441.

Li Hao-lin, Zhang Lei, and Yang Lei. A novel fast factorized back-projection algorithm for synthetic aperture radar imaging[J]. Journal of Electronics Information Technology, 2013, 35(6): 1435-1441.

施引文献

资源附件(0)

访问统计