doi:

DOI: 10.3724/SP.J.1300.2012.20046

Journal of Radars (雷达学报) 2012/1:2 PP.124-135

Progress in Circular SAR Imaging Technique


Abstract:
Circular SAR (CSAR) is a newly developed all-directional high resolution 3D imaging mode in recent years, to satisfy the demand of finer observation. The National Key Laboratory of Science and Technology on Microwave Imaging, Institute of Electronics, Chinese Academy of Sciences (MITL, IECAS), had the first test flight experiment in Aug. 2011 with a P-band full polarization SAR system, and successfully obtained the all-directional high resolution circular SAR image. The initial results show that CSAR technique has the encouraging potential capability in the fields of high precision mapping, disaster evaluation, resource management and the other related applications. This paper firstly makes a detailed discussion on the progress of circular SAR imaging technique, which emphases on the several airborne experiments performed these years to show CSAR’s attractive features, then studies and illustrates the key techniques, and finally discusses the development trends.

Key words:Synthetic Aperture Radar (SAR),Circular SAR (CSAR),All-directional observation,High resolution,3D imaging

ReleaseDate:2014-07-21 16:18:56



[1] 林赟, 谭维贤, 洪文, 等. 圆迹SAR极坐标格式算法研究[J]. 电子与信息学报, 2010, 32(12): 2802-2807. Lin Yun, Tan Wei-xian, Hong Wen, et al. Polar format algorithm for circular synthetic aperture radar[J]. Journal of Electronics & Information Technology, 2010, 32(12): 2802- 2807.

[2] 林赟. 圆迹合成孔径雷达成像算法研究[D]. [博士论文], 中国科学院电子学研究所, 2011. Lin Yun. Study on algorithms for circular synthetic aperture radar imaging[D]. [Ph.D.dissertation], Institute of Electronics, Chinese Academy of Sciences, 2011.

[3] Soumekh M. Reconnaissance with slant plane circular SAR imaging[J]. IEEE Transactions on Image Processing, 1996, 5(8): 1252-1265.

[4] Ishimaru A, Chan T, and Kuga Y. Experimental studies on circular SAR imaging in clutter using angular correction function technique[J]. IEEE Transactions on Geoscience and Remote Sensing, 1999, 37(5): 2192-2197.

[5] Soumekh M. Synthetic Aperture Radar Signal Processing[M]. New York: John Wiley & Sons, Inc., 1999: 486-539.

[6] Ishimaru A, Chan T, and Kuga Y. An imaging technique using confocal synthetic aperture radar[J]. IEEE Transactions on Geoscience and Remote Sensing, 1998, 36(5): 1524-1530.

[7] 苏志刚, 彭应宁, 王秀坛. 曲线合成孔径雷达中散射点三维特征提取方法[J]. 清华大学学报(自然科学版), 2005, 45(7): 947-950. Su Zhi-gang, Peng Ying-ning, and Wang Xiu-tan. Extraction of 3-D features of scatterers in curvilinear SAR[J]. Journal of Tsinghua University(Science and Technology), 2005, 45(7): 947-950.

[8] 吴仁彪, 苏志刚, 刘家学, 等. 一种基于曲线SAR的三维目标特征提取与自聚焦新算法[J]. 遥感学报, 2002, 6(6): 490-495. Wu Ren-biao, Su Zhi-gang, Liu Jia-xue, et al. A novel autofocus and 3-D target feature extraction algorithm for curvilinear SAR[J]. Journal of Remote Sensing, 2002, 6(6): 490-495.

[9] 唐智, 李景文, 周荫清, 等. 曲线合成孔径雷达信号模型与孔径形状研究[J]. 系统工程与电子技术, 2006, 28(8): 1115-1119. Tang Zhi, Li Jing-wen, Zhou Yin-qing, et al. Study on aperture shape in curvilinear synthetic aperture radar[J]. Systems Engineering and Electronics, 2006, 28(8): 1115-1119.

[10] 刘浩, 吴季. 基于曲线合成孔径雷达的三维目标特征提取[J]. 遥感技术与应用, 2004, 19(6): 493-497. Liu Hao and Wu Ji. Three dimensional target feature extraction using curvilinear synthetic aperture radar[J]. Remote Sensing Technology and Application, 2004, 19(6): 493-497.

[11] Lin Yun, Hong Wen, Tan Wei-xian, et al. Extension of range migration algorithm to squint circular SAR imaging[J]. IEEE Geoscience and Remote Sensing Letters, 2011, 8(4): 651-655.

[12] Lin Yun, Hong Wen, Tan Wei-xian, et al. Interferometric circular SAR method for three-dimensional imaging[J]. IEEE Geoscience and Remote Sensing Letters, 2011, 8(6): 1026- 1030.

[13] Lin Yun, Hong Wen, and Tan Wei-xian. A novel PGA technique for circular SAR based on echo regeneration[C]. CIE International Conference on Radar, Chengdu, China, Oct. 24-27, 2011: 411-413.

[14] Lin Yun, Hong Wen, Tan Wei-xian, et al. Compressed sensing technique for circular SAR imaging[C]. IET International Radar Conference, Guilin, 2009: 53.

[15] 洪文,林赟,王彦平, 等. 一种圆迹合成孔径雷达的大场景极坐标格式三维成像方法[P]. 中国, 200910085551, 2009. Hong Wen, Lin Yun, and Wang Yan-ping. A wide field polar format algorithm 3-D imaging method for circular Synthetic Aperture Radar[P]. China, 200910085551, 2009.

[16] Tan W X, Hong W, Wang Y P, et al. A novel three-dimensional microwave imaging mode and experiment: bistatic circular Synthetic Aperture Radar[C]. Progress in Electromagnetic Research, Beijing, 2009.

[17] Tan W X, Wang Y P, Hong W, et al. Circular SAR experiment for human body imaging[C]. Asian and Pacific conference on Synthetic Aperture Radar, Hefei, 2007: 90-93.

[18] Hong W, Wang Y P, Tan W X, et al. Tomographic SAR and circular SAR experiments in anechoic chamber[C]. European Conference on Synthetic Aperture Radar, Friedrichshafen, 2008, 2: 261-264.

[19] 谭维贤. 合成孔径雷达三维成像理论与方法研究[D]. [博士论文], 中国科学院电子学研究所, 2009. Tan Wei-xian. Study on theory and algorithms for three- dimensional synthetic aperture radar imaging[D]. [Ph.D. dissertation], Institute of Electronics, Chinese Academy of Sciences, 2009.

[20] 吴雄峰. 圆周SAR共焦三维成像原理与方法研究[D]. [硕士论文]. 中国科学院电子学研究所, 2007. Wu Xiong-feng. Studies on confocal three dimensional imaging principles and algorithms of circular synthetic aperture radar[D]. [Master dissertation], Institute of Electronics, Chinese Academy of Sciences, 2007.

[21] 吴雄峰, 王彦平, 吴一戎, 等. 圆周合成孔径雷达投影共焦三维成像算法[J]. 系统工程与电子技术, 2008, 30(10): 1874-1878. Wu Xiong-feng, Wang Yan-ping, Wu Yi-rong, et al. Projected confocal 3-D imaging algorithm for circular SAR[J]. Systems Engineering and Electronics, 2008, 30(10): 1874-1878.

[22] 王小青, 朱敏慧, 陈永强, 等. 地球同步轨道圆轨迹合成孔径雷达三维微波成像方法[P]. 中国, 200710176924, 2007. Wang Xiao-qing, Zhu Min-hui, Chen Yong-qiang, et al. 3D microwave imaging method for geosynchronous circular synthetic aperture radar[P]. China, 200710176924, 2007.

[23] Kou Lei-lei, Wang Xiao-qing, Xiang Mao-sheng, et al. Circular SAR processing using an improved omega-k type algorithm[J]. Journal of Systems Engineering and Electronics, 2010, 21(4): 572-579.

[24] Kou Lei-lei, Wang Xiao-qing, Zhu Min-hui, et al. Resolution analysis of circular SAR with partial circular aperture measurements[C]. European Conference on Synthetic Aperture Radar, Aachen, Germany, June 2010: 665-668.

[25] Frölind P O, Ulander L M H, and Gustavsson A. First results on VHF-band SAR imaging using circular tracks[C]. European Conference on Synthetic Aperture Radar, Friedrichshafen, 2008, 2: 221-224.

[26] Per-Olov Frölind, Anders Gustavsson, Mikael Lundberg, et al. Circular-aperture VHF-band synthetic aperture radar for detection of vehicles in forest concealment[J]. IEEE Transactions on Geoscience and Remote Sensing, 2012, 50(4): 1329-1339.

[27] Oriot H and Cantalloube H. Circular SAR imagery for urban remote sensing[C]. European Conference on Synthetic Aperture Radar, Friedrichshafen, 2008, 2: 205-208.

[28] Pinheiro M, Prats P, Scheiber R, et al. Tomographic 3D reconstruction from airborne circular SAR[C]. IEEE International Geoscience & Remote Sensing Symposium, Cape Town, South Africa, July 12-17, 2009: Ⅲ 21-24.

[29] Octavio Ponce, Pau Prats, Marc Rodriguez-Cassola, et al. Processing of circular SAR trajectories with fast factorized back-projection[C]. IEEE International Geoscience & Remote Sensing Symposium, Vancouver, Canada, July 24-29, 2011: 3692-3695.

[30] 黄培康, 许小剑. 旋转目标微波成像中的旁瓣抑制研究[J]. 宇航学报, 1988, 4: 24-31. Huang Pei-kang and Xu Xiao-jian. On the reduction of sidelobe in microwave imaging of rotating targets[J]. Journal of Astronautics, 1988, 4: 24-31.

PDF