Volume 4 Issue 4
Oct.  2015
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Zhan Xue-li, Wang Yan-fei, Wang Chao, Li He-ping. A Digital Dechirp Approach for Synthetic Aperture Radar[J]. Journal of Radars, 2015, 4(4): 474-480. doi: 10.12000/JR14117
Citation: Zhan Xue-li, Wang Yan-fei, Wang Chao, Li He-ping. A Digital Dechirp Approach for Synthetic Aperture Radar[J]. Journal of Radars, 2015, 4(4): 474-480. doi: 10.12000/JR14117

A Digital Dechirp Approach for Synthetic Aperture Radar

doi: 10.12000/JR14117
  • Received Date: 2014-10-22
  • Rev Recd Date: 2015-01-08
  • Publish Date: 2015-08-28
  • In this study, a digital dechirp approach for Synthetic Aperture Radar (SAR) is discussed. It can be applied to lightweight MiniSar systems with longer pulse width than swath. With this method, and after data acquisition with lower sampling rate than the bandwidth of the transmitted LFM signal and digital dechirp, pulse compression can be obtained by spectral analysis in the range direction without aliasing. The approach is described in detail and the sampling frequency selection criteria are derived. Theoretical formulations and numerical simulations verify the validity of the proposed approach.

     

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  • [1]
    Curlander J C and McDonough R N. Synthetic Aperture Radar: System and Signal Processing[M]. New York: Wiley, 1991, Chapter 1.
    [2]
    李春升, 杨威, 王鹏波. 星载SAR成像处理算法综述[J]. 雷达学 报, 2013, 2(1): 111-122. Li Chun-sheng, Yang Wei, and Wang Peng-bo. A review of spaceborne SAR algorithm for image formation[J]. Journal of Radars, 2013, 2(1): 111-122.
    [3]
    Lacomme P, Hardange J P, Marchais J C, et al.. Air and Spaceborne Radar Systems: An Introduction[M]. US: William Andrew, 2001, Chapter 14.
    [4]
    Edrich M and Weiss G. Second-generation Ka-band UAV SAR system[C]. Proceedings of the 38th European Microwave Conference, Amsterdam, 2008: 1636-1639.
    [5]
    Evan C, Zaugg Z, and David G L. Theory and application of motion compensation for LFM-CW SAR[J]. IEEE Transactions on Geosciense Remote Sensing, 2008, 46(10): 2990-2998.
    [6]
    Otten M, Van Rossum W, and Van Der Graaf M. Multichannel imaging with the AMBER FMCW SAR[C]. European Conference on Synthetic Aperture Radar, Berlin, 2014: 209-212.
    [7]
    Acevo-Herrea R, Aguasca A, Mallorqui J J, et al.. Highcompacted FM-CW SAR for boarding on small UAVS[C]. International Geoscience and Remote Sensing Symposium, Cape Town, South Africa, 2009, 2: 543-546.
    [8]
    Liu Yue and Deng Yun-kai. CARMSARa compact and reconfigurable miniature SAR system for high resolution remote sensing[C]. European Conference on Synthetic Aperture Radar, Nuremberg, 2012: 294-297.
    [9]
    董勇伟, 梁兴东, 丁赤飚. 调频连续波SAR数字接收机技术研 究[J]. 数据采集与处理, 2009, 24(S): 69-73. Dong Yong-wei, Liang Xing-dong, and Ding Chi-biao. Research on FMCW SAR digital receiver[J]. Journal of Data Acquisition Processing, 2009, 24(S): 69-73.
    [10]
    高许岗, 雍延梅. 无人机载微型SAR系统设计与实现[J]. 雷达 科学与技术, 2014, 12(1): 35-38. Gao Xu-gang and Yong Yan-mei. Design and realization of UAV high resolution miniature SAR[J]. Radar Science and Technology, 2014, 12(1): 35-38.
    [11]
    金胜, 朱天林, 邓振淼, 等. 基于去斜的步进频合成高分辨距离 像新方法[J]. 系统工程与电子技术, 2012, 34(6): 1126-1130. Jin Sheng, Zhu Tian-lin, Deng Zhen-miao, et al.. Dechirpbased method for synthesizing high resolution range profle(HRRP) via stepped frequency waveforms[J]. Systems Engineering and Electronics, 2012, 34(6): 1126-1130.
    [12]
    江碧涛, 张云华, 姜景山. 宽带调频步进信号的全去斜处理方 法[J]. 测试技术学报, 2008, 22(3): 225-230. Jiang Bi-tao, Zhang Yun-hua, and Jiang Jing-shan. A De- Chirp processing method for wide-band stepped-frequency chirp signals[J]. Journal of Test and Measurement Technology, 2008, 22(3): 225-230.
    [13]
    Cumming I G and Wong F H. Digital Processing of Synthetic Aperture Radar Data[M]. Norwood, MA: Artech House, 2005, Chapter 9.
    [14]
    詹学丽, 王岩飞, 王超, 等. 一种基于脉冲压缩的机载条带 S A R 重叠子孔径实时成像算法[J]. 雷达学报, D O I : 10.12000/JR14126. Zhan Xue-li, Wang Yan-fei, Wang Chao, et al.. Research on overlapped subaperture real-time imaing algorithm for pulse compression airborne strip SAR system[J]. Journal of Radars, DOI: 10.12000/JR14126.
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