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Please use this identifier to cite or link to this item: http://arks.princeton.edu/ark:/88435/dsp011g05ff83b
Title: Novel angular velocity estimation technique for plasma filaments
Contributors: Mate, Lampert
Mate, Lampert
Ahmed, Diallo
Stewart, Zweben
U. S. Department of Energy contract number DE-AC02-09CH11466
Issue Date: Dec-2022
Publisher: Princeton Plasma Physics Laboratory, Princeton University
Abstract: Data for the figures in text format. Please read the README file for detailed description.
URI: http://arks.princeton.edu/ark:/88435/dsp011g05ff83b
Referenced By: https://doi.org/10.1063/5.0128818
Appears in Collections:NSTX

Files in This Item:
File Description SizeFormat 
fig1ab.txtTwo example consecutive frames of a rotating filament. Each line represents 64 horizontal pixels from the frame, each column represents vertical 80 pixels. Frame #1 and frame #2 are in the same file and contain the data for Fig. 1(a) and Fig. 1(b).37.52 kBTextView/Download
fig3abcd.txtPre-processing steps for the analysis. Same representation as for Fig. 1. Fig 3 (a,b,c,d) are in the same file in respective order: GPI_SLICED_FULL data (Fig. 3 (a)): Data for Figure 3 (a) GPI_NORMALIZED data (Fig. 3 (b)): Data for Figure 3 (b) GPI_DETREND_VEL data (Fig. 3 (c)): Data for Figure 3 (c) GPI_GAUSS_DIFF data (Fig. 3 (d)): Data for Figure 3 (d)321.38 kBTextView/Download
fig4a.txtFourier magnitude spectrum of a pre-processed GPI frame. x (pix) is the x coordinate in the Fourier magnitude spectrum. y (pix) is the y coordinate. FFT linear is the Fourier magnitude spectrum. Each line represents a horizontal row of pixels in the x axis while each column represents a vertical column of pixels in the y axis.866.03 kBTextView/Download
fig4b.txtSame representation as Fig. 4 (a), but for the consecutive frame.865.08 kBTextView/Download
fig4c.txtLog-polar transformed Fourier magnitude spectrum of the spectrum in Fig. 4 (a). phi (deg) is the polar coordinate in the transformed spectrum. r (pix) is the radial coordinate in the transformed spectrum. FFT logpol: Log-polar Fourier magnitude spectrum. Each line represents a horizontal row of pixels in the polar axis while each column represents a vertical column of pixels in the radial axis.2.55 MBTextView/Download
fig4d.txtSame representation as Fig. 4 (c), but for the consecutive frame.2.56 MBTextView/Download
fig5.txtCross-correlation coefficient function calculated between the log-polar transformed Fourier magnitude spectra for the full polar and the [-31,31] radial range. r lag (pix): radial lag coordinate in the CCCF. phi lag (deg): polar lag coordinate in the CCCF 2D CCCF data: 2D spatial cross-correlation coefficient function. Each line represents a horizontal row of pixels in the phi lag axis while each column represents a vertical column of pixels in the r lag axis.876.55 kBTextView/Download
fig6.txtResults of the cross-correlation threshold assessment for NSTX GPI measurement for shot 141319. Each row represents a point in the time series. The columns represent the time, and the angular velocity estimates for different correlation thresholds from 0.9 to 0.4 with 0.1 increments, respectively.44.05 kBTextView/Download
fig7.txtSynthetic frames of a normal (Frame #1, Fig. 7 (a)) and a rotated (Frame #2, Fig. 7 (b)) Gaussian-structure. Same representation as in Figure 1.210.75 kBTextView/Download
fig8.txtRelative uncertainty of the angular rotation estimation vs. angle of rotation and the Gaussian structure size. Angle rotation: rotation in degrees. Size vector: FWHM of the Gaussian structures in pixels. Relative uncertainty: Each row corresponds to a Gaussian size setting. Each column corresponds to an angle of rotation setting.8.9 kBTextView/Download
fig9.txtRelative uncertainty of the angular rotation estimation vs. angle and elongation. Angle rotation: rotation in degrees Elongation: elongation of the Gaussian-structure. Relative uncertainty: Each row corresponds to a rotation angle setting, each column corresponds to an elongation setting.16.49 kBTextView/Download
fig10.txtMean and standard deviation of the relative uncertainty vs. angle of rotation and relative noise level. Angle of rotation: angle of rotation in degrees. Relative noise level: relative noise level settings. Mean relative uncertainty of the angular rotation estimation: Each row corresponds to a rotation angle setting, each column corresponds to a relative noise level setting. Data for Fig. 10 (a). Standard deviation of the relative uncertainty of the angular rotation estimation: Each row corresponds to a rotation angle setting, each column corresponds to a relative noise level setting. Data for Fig. 10 (b).30.26 kBTextView/Download
fig11_484.177ms.txt87.97 kBTextView/Download
fig11_484.180ms.txt87.23 kBTextView/Download
fig11_484.182ms.txt88.28 kBTextView/Download
fig11_484.185ms.txt88.03 kBTextView/Download
fig11_484.187ms.txt87.68 kBTextView/Download
fig11_484.190ms.txt87.8 kBTextView/Download
fig11_484.193ms.txt87.58 kBTextView/Download
fig11_484.195ms.txt87.73 kBTextView/Download
fig11_484.198ms.txt87.82 kBTextView/Download
fig12.txtAngular velocity estimation results for blobs in shot 141307. Time (ms): Time vector in milliseconds. Angular velocity (rad/s): Angular velocity in rad/s.14.78 kBTextView/Download
fig13_-2.5us.txt89.19 kBTextView/Download
fig13_-5us.txt88.7 kBTextView/Download
fig13_-7.5us.txt89.07 kBTextView/Download
fig13_-10us.txt89.34 kBTextView/Download
fig13_2.5us.txt88.87 kBTextView/Download
fig13_5us.txt89.19 kBTextView/Download
fig13_7.5us.txt89.43 kBTextView/Download
fig13_10us.txt88.91 kBTextView/Download
fig13_t_ELM.txt89.1 kBTextView/Download
fig14.txtAngular velocity estimation results for an ELM filament in shot 141319. Time (ms): Time vector in milliseconds. Angular velocity (rad/s): Angular velocity in rad/s.9.7 kBTextView/Download
fig15a.txtComparison of the angular velocity estimation techniques for shot 141307. Time CCCF (ms): Time vector in milliseconds for the CCCF technique. Angular velocity CCCF (krad/s): Angular velocity calculated with the CCCF based technique. Time contour (ms): Time vector in milliseconds for the contour technique. Angular velocity contour (krad/s): Angular velocity estimate with the contour based technique. Time watershed (ms): Time vector in milliseconds for the watershed technique. Angular velocity watershed (krad/s):Angular velocity estimate with the watershed based technique.42.74 kBTextView/Download
fig15b.txtComparison of the angular velocity estimation techniques for shot 141319. Same representation as for Fig. 15 (a).36.22 kBTextView/Download
README.txtDetailed description of all of the data files.5.11 kBTextView/Download


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