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ZH: test script for true_phase/calculated phase at tx

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Eric Teunis de Boone 2022-12-15 13:35:33 +01:00
parent 2e227d1765
commit a4fa874b54
2 changed files with 73 additions and 1 deletions
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11
simulations/airshower_beacon_simulation/lib/tests/test_beacon_fourier.py
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@ -23,19 +23,28 @@ rng = np.random.default_rng(seed)
phase_res = np.zeros(int(N)) phase_res = np.zeros(int(N))
# Vary both the base time and the phase # Vary both the base time and the phase
t_extra = 0
for i in range(int(N)): for i in range(int(N)):
# Change timebase
t -= t_extra
t_extra = (2*rng.uniform(size=1) - 1) *1e3 t_extra = (2*rng.uniform(size=1) - 1) *1e3
t += t_extra t += t_extra
# Randomly phased beacon
phase = lib.phase_mod(np.pi*(2*rng.uniform(size=1) -1)) # rad phase = lib.phase_mod(np.pi*(2*rng.uniform(size=1) -1)) # rad
beacon = lib.sine_beacon(frequency, t, t0=0, phase=phase) beacon = lib.sine_beacon(frequency, t, t0=0, phase=phase)
if True: # blank part of the beacon
blank_low, blank_high = 2*int(1e3), 4*int(1e3)
beacon[blank_low:blank_high] = 0
measured = lib.find_beacon_in_traces([beacon], t, frequency, frequency_fit=False) measured = lib.find_beacon_in_traces([beacon], t, frequency, frequency_fit=False)
t -= t_extra
phase_res[i] = lib.phase_mod(measured[1][0] - phase) phase_res[i] = lib.phase_mod(measured[1][0] - phase)
fig, ax = plt.subplots() fig, ax = plt.subplots()
ax.set_title("Sine beacon phase determination\nwith random time shifts")
ax.set_xlabel("$\\varphi_{meas} - \\varphi_{true}$ [rad]") ax.set_xlabel("$\\varphi_{meas} - \\varphi_{true}$ [rad]")
ax.set_ylabel("#") ax.set_ylabel("#")
ax.hist(phase_res, bins='sqrt') ax.hist(phase_res, bins='sqrt')

63
simulations/airshower_beacon_simulation/lib/tests/test_calculated_phase_measurement.py Executable file
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@ -0,0 +1,63 @@
#!/usr/bin/env python3
"""
Test the functions in lib concerning
beacon generation and removing the geometrical phase
work correctly together.
"""
import matplotlib.pyplot as plt
import numpy as np
from earsim import Antenna
import lib
seed = 12345
dt = 1 # ns
frequency = 45e-3 # GHz
N = 5e2
c_light = 3e8*1e-9
t = np.arange(0, 10*int(1e3), dt, dtype=float)
rng = np.random.default_rng(seed)
phase_in = lib.phase_mod(np.pi*(2*rng.uniform(size=1) -1)) # rad
tx = Antenna(x=0,y=0,z=0,name='tx')
rx = Antenna(x=30,y=40,z=120,name='rx')
# Vary both the base time and the phase
t_extra = 0
phase_res = np.zeros(int(N))
for i in range(int(N)):
# Change timebase
t -= t_extra
t_extra = (2*rng.uniform(size=1) - 1) *1e3
t += t_extra
# Randomise Antenna Location
if True:
rx.x, rx.y, rx.z = (2*rng.uniform(size=3) -1) * 1e4
# Randomly phased beacon
# at Antenna
phase = lib.phase_mod(np.pi*(2*rng.uniform(size=1) -1)) # rad
beacon = lib.beacon_from(tx, rx, frequency, t, radiate_rsq=False, phase=phase, c_light=c_light)
if True: # blank part of the beacon
blank_low, blank_high = 2*int(1e3), 4*int(1e3)
beacon[blank_low:blank_high] = 0
measured = lib.find_beacon_in_traces([beacon], t, frequency, frequency_fit=False)
calculated_phase = lib.remove_antenna_geometry_phase(tx, rx, frequency, measured[1][0], c_light=c_light)
phase_res[i] = lib.phase_mod(calculated_phase - phase)
fig, ax = plt.subplots()
ax.set_title("Measured phase at Antenna - geometrical phase")
ax.set_xlabel("$\\varphi_{meas} - \\varphi_{true}$ [rad]")
ax.set_ylabel("#")
ax.hist(phase_res, bins='sqrt')
plt.show()