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Entry  Thu Dec 17 02:57:08 2009, Jenne, Update, WienerFiltering, L1 DARM Static Wiener Filtered data L1darmCompPlot_17Dec2009_4daysLong.png
    Reply  Thu Dec 17 07:47:29 2009, Jenne, Update, WienerFiltering, L1 DARM Static Wiener Filtered data L1darmComp_17Dec2009_6day_residualsNormSurfacePlot.pngL1darmComp_17Dec2009_6day_ratioBLRMS.pngL1darmComp_17Dec2009_6day_rawBLRMS.pngL1darmComp_17Dec2009_6day_residualsBLRMS.png
Message ID: 2426     Entry time: Thu Dec 17 07:47:29 2009     In reply to: 2425
Author: Jenne 
Type: Update 
Category: WienerFiltering 
Subject: L1 DARM Static Wiener Filtered data 

This surface plot is the same as the previous one, with a little more data than I had previously. 

This time around, I also include the "BLRMS" plots for this data.  The first one takes each residual and normalizes it by the DARM_CTRL signal at that time, separates the spectra into bands, and integrates underneath the spectra within that band.  The second one is the raw DARM_CTRL signal's spectra at each time, and integrates under the spectra for each band, and the third BLRMS plot does the same thing for the residuals.  Unfortunately, these plots don't have the same handy black stripe during time which I don't analyze that the spectrogram utilizes.

From the second BLRMS plot we can see that the large red splotch in the spectrogram is due to higher noise in the DARM spectrum, and that (by looking at the Ratio BLRMS plot) the Wiener filter still does a pretty good job during this time.  I expect that for later times when the seismic (or something) event is gone, the Wiener filter will continue performing almost as well as it had been initially.

Again, once the script finishes applying the filter to the many ten minute chunks (the huge time drain is the data fetching, so this shouldn't be a limiting factor for using Wiener filters online), I'll post a final plot.

Attachment 1: L1darmComp_17Dec2009_6day_residualsNormSurfacePlot.png  389 kB  | Hide | Hide all
L1darmComp_17Dec2009_6day_residualsNormSurfacePlot.png
Attachment 2: L1darmComp_17Dec2009_6day_ratioBLRMS.png  23 kB  | Hide | Hide all
L1darmComp_17Dec2009_6day_ratioBLRMS.png
Attachment 3: L1darmComp_17Dec2009_6day_rawBLRMS.png  20 kB  | Hide | Hide all
L1darmComp_17Dec2009_6day_rawBLRMS.png
Attachment 4: L1darmComp_17Dec2009_6day_residualsBLRMS.png  20 kB  | Hide | Hide all
L1darmComp_17Dec2009_6day_residualsBLRMS.png
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