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Volume 41 Issue 1
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Journal of Beijing University of Aeronautics and Astronautics  > 2015  >  41(1): 33-37.
SUN Jingyu, WANG Zhongyu, LIANG Zhiguoet al. Evaluation method for distortion of arbitrary waveform[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(1): 33-37. doi: 10.13700/j.bh.1001-5965.2014.0079(in Chinese)
Citation: SUN Jingyu, WANG Zhongyu, LIANG Zhiguoet al. Evaluation method for distortion of arbitrary waveform[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(1): 33-37. doi: 10.13700/j.bh.1001-5965.2014.0079(in Chinese)
shu

Evaluation method for distortion of arbitrary waveform

doi: 10.13700/j.bh.1001-5965.2014.0079
  • 1.

    School of Instrumentation Science and Opto-electronics Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

  • 2. Beijing Changcheng Institute of Metrology and Measurement, Beijing 100095, China

  • Received Date: 27 Feb 2014
  • Publish Date: 20 Jan 2015
    Abstract
  • The index of distortion to evaluate the total quality of waveforms has special advantages and has been accepted widely by most people. Based on the analyses of the distortion definition of arbitrary waveform, a method using nonlinear-curve-fitting to evaluate the distortion of arbitrary waveform was discussed. Firstly, by moving the model in time domain, the“similar-fitting” model to the arbitrary waveform to be evaluated can be obtained. Then, using the least-square fitting method, the fitting curve on amplitude domain can be gotten, and this is just the best fitting curve to the arbitrary waveform to be evaluated. Thus, the distortion of the arbitrary waveform can be calculated. The results of the experiment show that this method has obviously practicability and flexibility, and can resolve the problem of evaluation for the distortion of arbitrary waveform. And then, it can resolve the problem of calibration for arbitrary waveform and arbitrary waveform generator (AWG).

     

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