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ZH: true phase script plots measured and actual local clock phases

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Eric Teunis de Boone 2023-02-07 14:17:17 +01:00
parent 5510ccb6d0
commit 61c3f608c9
1 changed files with 100 additions and 45 deletions
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145
simulations/airshower_beacon_simulation/bb_measure_clock_phase.py
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@ -83,64 +83,119 @@ if __name__ == "__main__":
# Plot True Phases at their locations # Plot True Phases at their locations
if show_plots or fig_dir: if show_plots or fig_dir:
fig, ax = plt.subplots(figsize=figsize) actual_clock_phases = lib.phase_mod(np.array([ -2*np.pi*a.attrs['clock_offset']*f_beacon for a in antennas ]))
spatial_unit='m' for i in range(2):
fig.suptitle('Clock phases\nf_beacon= {:2.0f}MHz'.format(f_beacon*1e3)) plot_residuals = i == 1
spatial_unit='m'
antenna_locs = list(zip(*[(ant.x, ant.y) for ant in antennas])) antenna_locs = list(zip(*[(ant.x, ant.y) for ant in antennas]))
ax.set_xlabel('x' if spatial_unit is None else 'x [{}]'.format(spatial_unit))
ax.set_ylabel('y' if spatial_unit is None else 'y [{}]'.format(spatial_unit))
scatter_kwargs = {}
scatter_kwargs['cmap'] = 'inferno'
#scatter_kwargs['vmin'] = -np.pi
#scatter_kwargs['vmax'] = +np.pi
color_label='$\\varphi(\\sigma_t)$ [rad]'
sc = ax.scatter(*antenna_locs, c=clock_phases, **scatter_kwargs) scatter_kwargs = {}
fig.colorbar(sc, ax=ax, label=color_label) scatter_kwargs['cmap'] = 'inferno'
if False: # Measurements
for i, ant in enumerate(antennas): if not plot_residuals:
ax.text(ant.x, ant.y, ant.name) title='Clock phases'
color_label='$\\varphi(\\sigma_t)$ [rad]'
if not True: fname_extra='measured.'
ax.plot(tx.x, tx.y, 'X', color='k', markeredgecolor='white')
if fig_dir: #scatter_kwargs['vmin'] = -np.pi
fig.savefig(path.join(fig_dir, path.basename(__file__) + f".F{freq_name}.pdf")) #scatter_kwargs['vmax'] = +np.pi
# Plot True Phases - Actual True Phases at their location # Plot Clock Phases - True Clock Phases at their location
if show_plots or fig_dir: else:
fig, ax = plt.subplots(figsize=figsize) title='Clock phase Residuals'
fig.suptitle('Clock phase Residuals\nf_beacon={:2.0f}MHz'.format(f_beacon*1e3)) color_label='$\\Delta\\varphi(\\sigma_t) = \\varphi_{meas} - \\varphi_{true}$ [rad]'
actual_clock_phases = np.array([ -2*np.pi*a.attrs['clock_offset']*f_beacon for a in antennas ]) fname_extra='residuals.'
# Modify actual_clock_phases, the same way as clock_phases # Modify actual_clock_phases, the same way as clock_phases
# was modified # was modified
if remove_absolute_phase_offset_first_antenna or remove_absolute_phase_offset_minimum: if remove_absolute_phase_offset_first_antenna or remove_absolute_phase_offset_minimum:
if remove_absolute_phase_offset_first_antenna: # just take the first phase if remove_absolute_phase_offset_first_antenna: # just take the first phase
minimum_phase = actual_clock_phases[0] minimum_phase = actual_clock_phases[0]
else: # take the minimum else: # take the minimum
minimum_phase = np.min(actual_clock_phases, axis=-1) minimum_phase = np.min(actual_clock_phases, axis=-1)
actual_clock_phases -= minimum_phase actual_clock_phases -= minimum_phase
actual_clock_phases = lib.phase_mod(actual_clock_phases) actual_clock_phases = lib.phase_mod(actual_clock_phases)
clock_phase_residuals = lib.phase_mod(clock_phases - actual_clock_phases) clock_phase_residuals = lib.phase_mod(clock_phases - actual_clock_phases)
antenna_locs = list(zip(*[(ant.x, ant.y) for ant in antennas])) if not plot_residuals:
ax.set_xlabel('x' if spatial_unit is None else 'x [{}]'.format(spatial_unit)) loc_c = clock_phases
ax.set_ylabel('y' if spatial_unit is None else 'y [{}]'.format(spatial_unit)) else:
scatter_kwargs = {} loc_c = clock_phase_residuals
scatter_kwargs['cmap'] = 'inferno'
color_label='$\\Delta\\varphi(\\sigma_t) = \\varphi_{meas} - \\varphi_{true}$ [rad]'
sc = ax.scatter(*antenna_locs, c=clock_phase_residuals, **scatter_kwargs) ##
fig.colorbar(sc, ax=ax, label=color_label) ## Geometrical Plot
##
fig, ax = plt.subplots(figsize=figsize)
if fig_dir: ax.set_xlabel('x' if spatial_unit is None else 'x [{}]'.format(spatial_unit))
fig.savefig(path.join(fig_dir, path.basename(__file__) + f".residual.F{freq_name}.pdf")) ax.set_ylabel('y' if spatial_unit is None else 'y [{}]'.format(spatial_unit))
fig.suptitle(title+'\nf_beacon= {:2.0f}MHz'.format(f_beacon*1e3))
sc = ax.scatter(*antenna_locs, c=loc_c, **scatter_kwargs)
fig.colorbar(sc, ax=ax, label=color_label)
if False:
for i, ant in enumerate(antennas):
ax.text(ant.x, ant.y, ant.name)
if not True:
ax.plot(tx.x, tx.y, 'X', color='k', markeredgecolor='white')
if fig_dir:
fig.tight_layout()
fig.savefig(path.join(fig_dir, path.basename(__file__) + f".geom.{fname_extra}F{freq_name}.pdf"))
##
## Histogram
##
fig, axs = plt.subplots(2, 1, sharex=True, figsize=figsize)
colors = ['blue', 'orange']
if True:
phase2time = lambda x: x/(2*np.pi*f_beacon)
time2phase = lambda x: 2*np.pi*x*f_beacon
secax = axs[0].secondary_xaxis('top', functions=(phase2time, time2phase))
secax.set_xlabel('Time $\\Delta\\varphi/(2\\pi f_{beac})$ [ns]')
if plot_residuals:
fig.suptitle("Difference between Measured and True Clock phases")
else:
fig.suptitle("Comparison Measured and True Clock Phases")
axs[-1].set_xlabel(f'Antenna {title} {color_label}')
#
hist_kwargs = dict(bins='sqrt', density=False, alpha=0.8, histtype='step')
i=0
axs[i].set_ylabel("#")
axs[i].hist(loc_c, color=colors[0], label='Measured', ls='solid', **hist_kwargs)
if not plot_residuals: # also plot the true clock phases
axs[i].hist(actual_clock_phases, color=colors[1], label='Actual', ls='dashed', **hist_kwargs)
#axs[i].legend()
#
plot_kwargs = dict(alpha=0.6, ls='none')
i=1
axs[i].set_ylabel("Antenna no.")
axs[i].plot(loc_c, np.arange(len(loc_c)), marker='x' if plot_residuals else '3', color=colors[0], label='Measured', **plot_kwargs)
if not plot_residuals: # also plot the true clock phases
axs[i].plot(actual_clock_phases, np.arange(len(loc_c)), marker='4', color=colors[1], label='Actual', **plot_kwargs)
axs[i].legend()
# Save figure
if fig_dir:
fig.tight_layout()
fig.savefig(path.join(fig_dir, path.basename(__file__) + f".{fname_extra}F{freq_name}.pdf"))
print(f"True phases written to", antennas_fname) print(f"True phases written to", antennas_fname)