Volume 36 Issue 2
Feb.  2010
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Yang Shan, Bai Ming, Miao Junganget al. Fast method of eliminating extraneous in near filed measurement of calibration load[J]. Journal of Beijing University of Aeronautics and Astronautics, 2010, 36(2): 235-238. (in Chinese)
Citation: Yang Shan, Bai Ming, Miao Junganget al. Fast method of eliminating extraneous in near filed measurement of calibration load[J]. Journal of Beijing University of Aeronautics and Astronautics, 2010, 36(2): 235-238. (in Chinese)

Fast method of eliminating extraneous in near filed measurement of calibration load

  • Received Date: 16 Jan 2009
  • Publish Date: 28 Feb 2010
  • A method to analyze and eliminate the extraneous wave from near field measurement of the radiometer temperature calibration load based on fast inverse diffraction algorithm was presented. The inverse diffraction algorithm is used for field reconstruction by calculating the backward propagation of a diffraction field. Both the fast-Fourier-transform direct integration(FFT-DI) and diffracted Gaussian beam analysis(DGBA) were implemented and combined with the inverse diffraction algorithm for fast inverse diffraction algorithm. An outline of the analysis on the near field measurement was presented, along with the filtered field without extraneous wave, which verifies the performance of this method. Furthermore, it was suggested that combination of these two fast inverse diffraction algorithm for higher efficiency.

     

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