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Volume 27 Issue 1
Jan.  2001
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Journal of Beijing University of Aeronautics and Astronautics  > 2001  >  27(1): 16-19.
Du Yongle, Yan Chao. Adaptive local time step method for DSMC code[J]. Journal of Beijing University of Aeronautics and Astronautics, 2006, 32(04): 387-390. (in Chinese)
Citation: XU Hua-ping, ZHOU Yin-qing, CHEN Jie, et al. Interferometric SAR Phase Noise Reduction[J]. Journal of Beijing University of Aeronautics and Astronautics, 2001, 27(1): 16-19. (in Chinese)
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Interferometric SAR Phase Noise Reduction

  • Beijing University of Aeronautics and Astronautics, Dept. of Electronic Engineering

  • Received Date: 08 Sep 1999
  • Publish Date: 31 Jan 2001
    Abstract
  • The phase noise suppression methods applied on the interferogram of interferometric synthetic aperture radar(INSAR) are studied.Multilook average approach(low pass linear filter) is discussed,and the new concept of range and azimuth critical look number used in multilook approach is proposed and its calculation formulas are deduced.The modified neighborhood field average filter,modified median filter and mode filter are analyzed,and a new practical method,which combines multilook average and nonlinear filter to reduce noise in the wrapped phase map,is presented.At the end of this paper,the characteristics of these approaches are compared and the experimental results by processing ERS-1/2 data are used to confirm that the method is more effective in suppressing noise in the interferogram of INSAR.

     

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    • References(1)
  • [1] Goldstein R M,Zebker H A,Werner C L.Satellite radar interferometry:Two-dimensional phase unwrapping[J].Radio Science,1988,23(4):713~720. [2] ebker H A,Werner C L,Rosen P A,et al.Accuracy of topographic maps derived from ERS-1 interferometric Radar[J].IEEE Transactions on Geoscience and Remote Sensing,1994,32(4):823~836. [3] ust D,Bamler R. Phase statistics of interferograms with applications to synthetic aperture radar[J].Applied Optics,1994,33(20):4361~4368. [4] Candeias A L B,Mura J C,Dutra L V,et al.Interferogram phase noise reduction using morphological and modified median filters. In:IEEE Proceedings of the International Geoscience and Remote Sensing Symposium, 1995.166~168. [5] Ghiglia D C,Mastin G A,Romero L A.Cellular-automata method for phase unwrapping[J].Optical Society of America,1987,4(1):267~280.
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