nqrduck/nqrduck-spectrometer-limenqr
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Fixed a bug where the pulse had the wrong freq.

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This commit is contained in:
jupfi 2023-08-02 11:04:07 +02:00
parent 35effabd52
commit 901190e068
1 changed files with 12 additions and 2 deletions
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14
src/nqrduck_spectrometer_limenqr/controller.py
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@ -80,7 +80,8 @@ class LimeNQRController(BaseSpectrometerController):
# time domain x and y data # time domain x and y data
tdx = lime.HDF.tdx[evidx] - lime.HDF.tdx[evidx][0] tdx = lime.HDF.tdx[evidx] - lime.HDF.tdx[evidx][0]
tdy = np.abs(lime.HDF.tdy[evidx] / lime.nav) tdy = lime.HDF.tdy[evidx] / lime.nav
tdy = tdy - np.mean(tdy)
measurement_data = Measurement( measurement_data = Measurement(
tdx, tdx,
@ -194,7 +195,16 @@ class LimeNQRController(BaseSpectrometerController):
TXPulse.TX_PULSE_SHAPE TXPulse.TX_PULSE_SHAPE
).value ).value
pulse_amplitude = abs(pulse_shape.get_pulse_amplitude(event.duration)) pulse_amplitude = abs(pulse_shape.get_pulse_amplitude(event.duration))
# We need modulate the pulse amplitude by the IF frequency
# Create the complex exponential to shift the frequency
tdx = np.linspace(0, float(event.duration), int(float(event.duration) * lime.sra))
shift_signal = np.cos(2 * np.pi * self.module.model.if_frequency * tdx)
# Apply the shift by multiplying the time domain signal
pulse_amplitude = (pulse_amplitude * shift_signal)
pulse_amplitude /= np.max(pulse_amplitude) pulse_amplitude /= np.max(pulse_amplitude)
if len(lime.pfr) == 0: if len(lime.pfr) == 0:
# Add the TX pulse to the pulse frequency list (lime.pfr) # Add the TX pulse to the pulse frequency list (lime.pfr)
lime.pfr = [ lime.pfr = [
@ -315,7 +325,7 @@ class LimeNQRController(BaseSpectrometerController):
offset = self.module.model.OFFSET_FIRST_PULSE * (1 / lime.sra) offset = self.module.model.OFFSET_FIRST_PULSE * (1 / lime.sra)
rx_duration = event.duration rx_duration = event.duration
rx_begin = previous_events_duration + offset + CORRECTION_FACTOR rx_begin = float(previous_events_duration) + offset + CORRECTION_FACTOR
if rx_duration: if rx_duration:
rx_stop = rx_begin + float(rx_duration) rx_stop = rx_begin + float(rx_duration)
return rx_begin * 1e6, rx_stop * 1e6 return rx_begin * 1e6, rx_stop * 1e6