IPKM/damaris-script-library
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Remove filtering and downsampling process

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Filtering and downsampling process in `satrec_res.py` was unnecessary and has been removed alongside similar modifications made in `satrec_exp.py`.
This commit is contained in:
Markus Rosenstihl
2024-02-27 16:57:51 +01:00
parent 7f4a1ac515
commit caf19bc468
2 changed files with 10 additions and 56 deletions
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36
Scripts/Saturation_Recovery/satrec_res.py
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@@ -29,42 +29,6 @@ def result():
# get actual sampling rate of timesignal:
sampling_rate = timesignal.get_sampling_rate()
# get user-defined spectrum width:
spec_width = pars['SW']
# specify cutoff frequency, in relative units:
cutoff = spec_width / sampling_rate
if cutoff < 1: # no filter applied otherwise
# number of filter's coefficients:
numtaps = 29
# use firwin to create a lowpass FIR filter:
fir_coeff = firwin(numtaps, cutoff)
# downsize x according to user-defined spectral window:
skip = int(sampling_rate / spec_width)
timesignal.x = timesignal.x[::skip]
for i in range(2):
# apply the filter to ith channel:
timesignal.y[i] = lfilter(fir_coeff, 1.0, timesignal.y[i])
# zeroize first N-1 "corrupted" samples:
timesignal.y[i][:numtaps-1] = 0.0
# circular left shift of y:
timesignal.y[i] = roll(timesignal.y[i], -(numtaps-1))
# downsize y to user-defined number of samples (SI):
timesignal.y[i] = timesignal.y[i][::skip]
# update the sampling_rate attribute of the signal's:
timesignal.set_sampling_rate(spec_width)
# ----------------------------------------------------
# rotate timesignal according to current receiver's phase:
timesignal.phase(pars['rec_phase'])