Use of the Wigner‐Ville distribution in interpreting and identifying ULF waves in triaxial magnetic records

  title={Use of the Wigner‐Ville distribution in interpreting and identifying ULF waves in triaxial magnetic records},
  author={Peter J. Chi and Christopher T. Russell},
  journal={Journal of Geophysical Research},
[1] Magnetospheric ultra-low-frequency (ULF) waves (f = 1 mHz to 1 Hz) exhibit highly time-dependent characteristics due to the dynamic properties of these waves and, for observations in space, the spacecraft motion. These time-dependent features may not be properly resolved by conventional Fourier techniques. In this study we examine how the Wigner-Ville distribution (WVD) can be used to analyze ULF waves. We find that this approach has unique advantages over the conventional Fourier… 

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