Advanced Search
Volume 29 Issue 8
Jan.  2011
Turn off MathJax
Article Contents
Li Ya-chao, Zhou Feng, Xing Meng-dao, Bao Zheng. An Effective Method for Ship Dechirp Data Imaging in Helicopter SAR System[J]. Journal of Electronics & Information Technology, 2007, 29(8): 1794-1798. doi: 10.3724/SP.J.1146.2005.01535
Citation: Li Ya-chao, Zhou Feng, Xing Meng-dao, Bao Zheng. An Effective Method for Ship Dechirp Data Imaging in Helicopter SAR System[J]. Journal of Electronics & Information Technology, 2007, 29(8): 1794-1798. doi: 10.3724/SP.J.1146.2005.01535

An Effective Method for Ship Dechirp Data Imaging in Helicopter SAR System

doi: 10.3724/SP.J.1146.2005.01535
  • Received Date: 2005-11-28
  • Rev Recd Date: 2006-05-22
  • Publish Date: 2007-08-19
  • In view of unsteadily flying, the helicopter brings about great errors to moving targets imaging, especially SAR imaging of moving ship. So this paper shows an effective method based on an idea that uses motion compensation, general second-step keystone transform twice and at the same time, finds an isolated point and adopts WVD transform to estimate Doppler parameters for removing range walk and curvature. And what is more, the detailed deductions are given in this paper.Finally, the SAR image of moving ship is acquired in the azimuth frequency field. The simulation results of three moving point-targets and the imaging result of real ship data confirme this method.
  • loading
  • Sparr T. Moving target motion estimation and focusing in SAR images[C]. International Radar Conference, Yantai, China, IEEE, 9-12 May, 2005: 290-294.Qu Chang-wen, He You, Su Feng, and Huang Yong. SAR moving targets detection based on the chirp-Fourier transform[C]. International Radar Conference, Yantai, China, IEEE, 9-12 May, 2005: 802-805.[2]陈仁元, 张长耀, 邓海涛, 王燕宇. 直升机合成孔径雷达对海面动目标成像[C]. 中国合成孔径雷达会议论文集, 合肥, 2003, 12, 1-4: 264-267.[3]李士国, 单荣光, 储晓彬, 倪晋麟. 基于SAR/ISAR的机载雷达舰船成像[J]. 信号处理, 2000, 16(2): 151-155.[4]Tang Li-bo.[J].Li Dao-jing, Hong Wen, and Cao Fang. High resolution SAR imaging of moving ships[C].Geoscience and Remote Sensing Symposium,IGARSS05 Proceedings, IEEE International, Beijing, P.R.China, 25-29 July.2005,:-[5]李杰, 向敬成, 黄顺吉. 合成孔径雷达慢运动目标成像处理的研究[J]. 电子科技大学学报, 1995, 24(2): 119-125.[6]Shun-Sheng Zhang, Tao Zeng, Teg Long, and Hai-Peng Yuan. Dim target detection based on keystone transform[J]. International Radar Conference, Yantai, China, IEEE, 9-12 May, 2005: 889-894.[7]Perry R P. SAR imaging of moving targets[J].IEEE Trans. on Aerospace and Electronic Systems.1999, 35(1):188-200[8]盛蔚, 毛士艺. 基于keystone变换的地面运动目标检测研究[J]. 系统工程与电子技术, 2002, 24(11): 2-5. Sheng Wei and Mao Shi-yi. Ground moving target detection with an SAR system based on keystone transform. Systems Engineering and Electronics, 2002, 24(11): 2-5.[9]保铮, 邢孟道, 王彤编著.雷达成像技术[M]. 北京:电子工业出版社,2005, 第2,5,6章.[10]张贤达, 保铮编著. 非平稳信号的分析与处理[M]. 北京:国防工业出版社,1998, 第2,3章.[11]L Cohen. Time-frequency distributions-review[J].Proc. IEEE, 1978, 77(1): 86-91.[12]盛蔚, 毛士艺. 一种合成孔径雷达对地面运动目标成像和精确定位的算法[J]. 电子与信息学报. 2004, 26(4): 598-606. Sheng Wei and Mao Shi-yi. An effective method for ground moving target imaging and location in SAR system. Journal of Electronics Information Technology. 2004, 26(4): 598-606.[13]邢孟道, 保铮, 郑义明, 冯大政. 适合于大型平稳和机动目标的成像算法[J]. 信号处理, 2001, 27(3): 43-45, 49.[14]陈文驰, 邢孟道. 基于keystone变换的多目标ISAR成像算法[J]. 现代雷达. 2005, 17(1): 47-55.
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Article Metrics

    Article views (3529) PDF downloads(876) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return