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Volume 31 Issue 10
Oct.  2005
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Journal of Beijing University of Aeronautics and Astronautics  > 2005  >  31(10): 1063-1065.
Ye Shaohua, Zhou Yinqing. Motion compensation processing for airborne SAR data based on real sensing data of IMU/GPS[J]. Journal of Beijing University of Aeronautics and Astronautics, 2005, 31(10): 1063-1065. (in Chinese)
Citation: Ye Shaohua, Zhou Yinqing. Motion compensation processing for airborne SAR data based on real sensing data of IMU/GPS[J]. Journal of Beijing University of Aeronautics and Astronautics, 2005, 31(10): 1063-1065. (in Chinese)
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Motion compensation processing for airborne SAR data based on real sensing data of IMU/GPS

  • School of Electronics and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

  • Received Date: 26 May 2004
  • Publish Date: 31 Oct 2005
    Abstract
  • The motion compensation technique for airborne stripmap mode SAR(synthetic aperture radar) was briefly analyzed, the strong motion errors with small aircraft Y12 were evident through analyzing the position parameters offered by an IMU/GPS(inertial measurement units/global positioning system) unit with laser gyros, then the motion compensation processing, which combined with range-Doppler image formation algorithm, was tested based on the high precision APC(antenna phase center) position parameters provided by the laser IMU/GPS unit. The results showed that high quality SAR images could be obtained directly from SAR raw data with serious motion errors through motion compensation procedure, so any kind of autofocus procedures with heavy computation load does not needed to correct the residual motion errors.

     

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    • References(1)
  • [1] Madson S N, Christensen E L, Skou N, et al. The Danish SAR system:design and initial test[J] IEEE Trans, on GRS, 1991, 29(3):417~425 [2] Dirk J C. Motion compensation for synthetic aperture radar[J] IEEE Trans, on AES, 1975, 11(3):338~348 [3] Moreira A, Huang Y. Airborne SAR processing of highly squinted data using a chirp scaling approach with integrated motion compensation[J] IEEE Trans, on GRS, 1994, 32(5):1029~1040 [4] Wahl D E, Eichel P H, Ghiglia D C, et al. Phase gradient autofocus a robust tool for high resolution SAR phase correction[J] IEEE Trans, on AES, 1994, 30(3):827~835 [5] Berizzi F, Corsini G. Autofocusing of inverse synthetic aperture radar images using contrast optimization[J] IEEE Trans, on AES, 1996, 32(2):1185~1191
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