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Volume 26 Issue 12
Dec.  2004
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Lei Wan-ming, Hu Xue-cheng. High Resolution Airborne SAR Motion Compensation Based on Echo Data[J]. Journal of Electronics & Information Technology, 2004, 26(12): 1908-1914.
Citation: Lei Wan-ming, Hu Xue-cheng. High Resolution Airborne SAR Motion Compensation Based on Echo Data[J]. Journal of Electronics & Information Technology, 2004, 26(12): 1908-1914.

High Resolution Airborne SAR Motion Compensation Based on Echo Data

  • Received Date: 2003-07-11
  • Rev Recd Date: 2004-03-15
  • Publish Date: 2004-12-19
  • This paper amply analyzes the airborne SAR motion compensation mechanism on the range compression data and complex image data, and proposes a motion compen-sation algorithm for the high resolution airborne SAR. This algorithm makes use of the sub-aperture technique to estimate the sub-apertures Doppler rate with the improved max-imum contrast method, and then performs time-domain motion compensation for range compressing data and executes the frequency-domain motion compensation for complex im-age with PGA method. The raw data imaging result shows that the algorithm can effectively overcome the disadvantage of the scene dependence of the singularity motion compensation algorithm, and improve the SAR image quality.
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  • Moreira A, Huang Yonghong. Airborne SAR processing of highly squinted data using a chirp scaling approach with integrated motion compensation . IEEE Trans. on GRS, 1994, 32(5):1029-1040[2]Moreira J R. A new method of aircraft motion error extract from radar raw data for real time motion compensation. IEEE Trans.on GRS, 1990, 28(4): 620-626.[3]Gallon A.[J].Impagnatiello F. Motion compensation in chirp scaling SAR processing using phase gradient autofocusing . IGARSS 98, Alenia, Aerospazio, Rome, Italy.1998,:-[4]Blacknell D, Freeman A, et al.. Geometric accuracy in airborne SAR images. IEEE Trans. on AES, 1989, 25(2): 241-255.[5]Wahl D E, Eichel P H, Ghiglia D C, et al.. Phase gradient autofocus-a robust tool for high resolution SAR phase correction. IEEE Trans. on AES, 1994, 30(3): 827-835.[6]Eichel P H, Wahl D E. Phase gradient algorithm as an optional estimator of the phase derivative[J].Optics letters.1989, 14(20):1101-1103
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