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plots.py
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174 lines (167 loc) · 9.74 KB
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import matplotlib.pyplot as plt
import numpy as np
from numpy.fft import fft2, fftshift, ifft2, ifftshift
from SAR_imaging import SAR_imaging
class plots:
def __init__(self, output_folder, sar:SAR_imaging):
self.output_folder=output_folder
self.sar:SAR_imaging=sar
#self.plotMTFs()
self.plotImages()
self.plotSpectra()
# plt.show()
def plotImages(self):
fig, (ax, ax1, ax2)=plt.subplots(1,3,layout='compressed',)
start_x=self.sar.N_x//2-50
end_x=self.sar.N_x//2+50
start_y=self.sar.N_y//2-50
end_y=self.sar.N_y//2+50
im=ax.imshow(self.sar.surface[start_y:end_y,start_x:end_x],origin='lower',extent=[self.sar.dx*start_x,self.sar.dx*end_x,self.sar.dy*start_y,self.sar.dy*end_y])
ax.set_xlabel("Azimuth [m]")
ax.set_ylabel("Range [m]")
ax.set_title("Ocean Wave Field")
cb=fig.colorbar(im, ax=ax)
cb.set_label("Elevation [m]")
im1=ax1.imshow(self.sar.I[start_y:end_y,start_x:end_x],cmap='gray',origin='lower', extent=[self.sar.dx*start_x,self.sar.dx*end_x,self.sar.dy*start_y,self.sar.dy*end_y])
ax1.set_xlabel("Azimuth [m]")
ax1.set_ylabel("Range [m]")
ax1.set_title("SAR Image")
im2=ax2.imshow(self.sar.noisy_I[start_y:end_y,start_x:end_x],cmap='gray',origin='lower',extent=[self.sar.dx*start_x,self.sar.dx*end_x,self.sar.dy*start_y,self.sar.dy*end_y])
ax2.set_xlabel("Azimuth [m]")
ax2.set_ylabel("Range [m]")
ax2.set_title("Noisy SAR Image")
fig.savefig(f'{self.output_folder}/images.png', dpi=150, bbox_inches='tight', pad_inches=0.1)
def plotMTFs(self):
fig1, ((axTilt, axHydrodynamic), (axRB, axVB))=plt.subplots(2,2)
axTilt.pcolor(self.sar.kx, self.sar.ky, abs(self.sar.tilt_mtf()), cmap='viridis')
axTiltContour=axTilt.contour(self.sar.kx, self.sar.ky, abs(self.sar.tilt_mtf()), colors='w')
axTilt.clabel(axTiltContour, axTiltContour.levels, inline=True, fontsize=10)
axTilt.set_title("Tilt MTF")
axTilt.set_xlabel("Azimuth Wavenumber")
axTilt.set_ylabel("Range Wavenumber")
axHydrodynamic.pcolor(self.sar.kx, self.sar.ky, abs(self.sar.hydrodynamic_mtf()))
axHydrodynamicContour=axHydrodynamic.contour(self.sar.kx, self.sar.ky, abs(self.sar.hydrodynamic_mtf()), colors='w')
axHydrodynamic.clabel(axHydrodynamicContour, axHydrodynamicContour.levels, inline=True, fontsize=10)
axHydrodynamic.set_title("Hydrodynamic MTF")
axHydrodynamic.set_xlabel("Azimuth Wavenumber")
axHydrodynamic.set_ylabel("Range Wavenumber")
axRB.pcolor(self.sar.kx, self.sar.ky, abs(self.sar.range_bunching_mtf()))
axRBContour=axRB.contour(self.sar.kx, self.sar.ky, abs(self.sar.range_bunching_mtf()), colors='w')
axRB.clabel(axRBContour, axRBContour.levels, inline=True, fontsize=10)
axRB.set_title("Range Bunching MTF")
axRB.set_xlabel("Azimuth Wavenumber")
axRB.set_ylabel("Range Wavenumber")
axVB.pcolor(self.sar.kx, self.sar.ky, abs(self.sar.velocity_bunching_mtf()))
axVBContour=axVB.contour(self.sar.kx, self.sar.ky, abs(self.sar.velocity_bunching_mtf()), colors='w')
axVB.clabel(axVBContour, axVBContour.levels, inline=True, fontsize=10)
axVB.set_title("Velociy Bunching MTF")
axVB.set_xlabel("Azimuth Wavenumber")
axVB.set_ylabel("Range Wavenumber")
fig1.tight_layout()
#fig1.savefig(f'{self.output_folder}/mtfs.svg', format='svg', dpi=150, bbox_inches='tight', pad_inches=0.1)
#fig1.savefig(f'{self.output_folder}/mtfs.pdf', format='pdf', dpi=150, bbox_inches='tight', pad_inches=0.1)
fig2, (axOrbitalMTF, axOrbital)=plt.subplots(1,2)
axOrbitalMTF.pcolor(self.sar.kx, self.sar.ky, abs(self.sar.orbital_velocity_mtf()), cmap='gist_gray')
axOVContour=axOrbitalMTF.contour(self.sar.kx, self.sar.ky, abs(self.sar.orbital_velocity_mtf()), colors='w')
axOrbitalMTF.clabel(axOVContour, axOVContour.levels, inline=True, fontsize=10)
axOrbitalMTF.set_title("Orbital Velocity MTF")
axOrbitalMTF.set_xlabel("Azimuth Wavenumber")
axOrbitalMTF.set_ylabel("Range Wavenumber")
plotColorbar=axOrbital.imshow(self.sar.mean_orbital_velocity(), origin='lower')
axOrbital.set_title("Orbital Velocity")
axOrbital.set_xlabel("Azimuth [N]")
axOrbital.set_ylabel("Range [N]")
# plt.colorbar(plotColorbar, ax=axOrbital)
fig2.tight_layout()
#fig2.savefig(f'{self.output_folder}/orbital.svg', format='svg', dpi=150, bbox_inches='tight', pad_inches=0.1)
#fig2.savefig(f'{self.output_folder}/orbital.pdf', format='pdf', dpi=150, bbox_inches='tight', pad_inches=0.1)
fig3, (axRARAbs, axRarPhase)=plt.subplots(1,2)
axRARAbsPlot=axRARAbs.pcolor(self.sar.kx, self.sar.ky, abs(self.sar.RAR_MTF()), cmap='gist_gray')
absContour=axRARAbs.contour(self.sar.kx, self.sar.ky, abs(self.sar.RAR_MTF()),20, colors='w')
# plt.colorbar(axRARAbsPlot, ax=axRARAbs)
axRARAbs.clabel(absContour, absContour.levels, inline=True, fontsize=10)
axRARAbs.set_title("RAR MTF")
axRARAbs.set_xlabel("Azimuth Wavenumber")
axRARAbs.set_ylabel("Range Wavenumber")
axRarPhasePlot=axRarPhase.pcolor(self.sar.kx, self.sar.ky, abs(np.angle(self.sar.RAR_MTF())), cmap='gist_gray')
phaseContour=axRarPhase.contour(self.sar.kx, self.sar.ky, np.rad2deg(abs(np.angle(self.sar.RAR_MTF()))), 20, colors='w')
# plt.colorbar(axRarPhasePlot, ax=axRarPhase)
axRarPhase.clabel(phaseContour, phaseContour.levels, inline=True, fontsize=10)
axRarPhase.set_title("RAR MTF")
axRarPhase.set_xlabel("Azimuth Wavenumber")
axRarPhase.set_ylabel("Range Wavenumber")
fig3.tight_layout()
#fig3.savefig(f'{self.output_folder}/rar.svg', format='svg', dpi=150, bbox_inches='tight', pad_inches=0.1)
#fig3.savefig(f'{self.output_folder}/rar.pdf', format='pdf', dpi=150, bbox_inches='tight', pad_inches=0.1)
fig4, (axSARAbs, axSARPhase)=plt.subplots(1,2)
axRARAbsPlot=axSARAbs.pcolor(self.sar.kx, self.sar.ky, abs(self.sar.SAR_MTF()), cmap='gist_gray')
absContourSAR=axSARAbs.contour(self.sar.kx, self.sar.ky, abs(self.sar.SAR_MTF()),20, colors='w')
# plt.colorbar(axRARAbsPlot, ax=axSARAbs)
axSARAbs.clabel(absContourSAR, absContourSAR.levels, inline=True, fontsize=10)
axSARAbs.set_title("SAR MTF")
axSARAbs.set_xlabel("Azimuth Wavenumber")
axSARAbs.set_ylabel("Range Wavenumber")
axsarPhasePlot=axSARPhase.pcolor(self.sar.kx, self.sar.ky, abs(np.angle(self.sar.SAR_MTF())), cmap='gist_gray')
phaseContourSAR=axSARPhase.contour(self.sar.kx, self.sar.ky, np.rad2deg(abs(np.angle(self.sar.SAR_MTF()))), 20, colors='w')
# plt.colorbar(axsarPhasePlot, ax=axSARPhase)
axSARPhase.clabel(phaseContourSAR, phaseContourSAR.levels, inline=True, fontsize=10)
axSARPhase.set_title("SAR MTF")
axSARPhase.set_xlabel("Azimuth Wavenumber")
axSARPhase.set_ylabel("Range Wavenumber")
fig4.tight_layout()
#fig4.savefig(f'{self.output_folder}/sar.svg', format='svg', dpi=150, bbox_inches='tight', pad_inches=0.1)
#fig4.savefig(f'{self.output_folder}/sar.pdf', format='pdf', dpi=150, bbox_inches='tight', pad_inches=0.1)
def plotSpectra(self):
fig, ((ax1,ax2, ax3), (ax4, ax5, ax6))=plt.subplots(2, 3,layout='compressed',)
ax1.contour(self.sar.kx, self.sar.ky,abs(self.sar.PSI))
ax1.set_title("Original Spectrum")
ax1.set_xlabel("Azimuth Wavenumber")
ax1.set_ylabel("Range Wavenumber")
ax2.contour(self.sar.kx, self.sar.ky,abs(fftshift(fft2(self.sar.surface))))
ax2.set_title("Sea surface Spectrum")
ax2.set_xlabel("Azimuth Wavenumber")
ax2.set_ylabel("Range Wavenumber")
ax3.contour(self.sar.kx, self.sar.ky,abs(fftshift(fft2(self.sar.noisy_I))))
ax3.set_title("Noisy SAR Spectrum")
ax3.set_xlabel("Azimuth Wavenumber")
ax3.set_ylabel("Range Wavenumber")
ax4.contour(self.sar.kx, self.sar.ky,abs(self.sar.linear_mapping_transform()))
ax4.set_title("Linear Mapping")
ax4.set_xlabel("Azimuth Wavenumber")
ax4.set_ylabel("Range Wavenumber")
ax5.contour(self.sar.kx, self.sar.ky,abs(self.sar.quasilinear_mapping_transform()))
ax5.set_title("Quasilinear Mapping")
ax5.set_xlabel("Azimuth Wavenumber")
ax5.set_ylabel("Range Wavenumber")
ax6.contour(self.sar.kx, self.sar.ky,abs((self.sar.nonlinear_mapping_transform(3))))
ax6.set_title("Nonlinear Mapping")
ax6.set_xlabel("Azimuth Wavenumber")
ax6.set_ylabel("Range Wavenumber")
if self.sar.wind_speed==10:
ax1.set_xlim(-0.25,0.25)
ax2.set_xlim(-0.25,0.25)
ax3.set_xlim(-0.25,0.25)
ax4.set_xlim(-0.25,0.25)
ax5.set_xlim(-0.25,0.25)
ax6.set_xlim(-0.25,0.25)
ax1.set_ylim(-0.25,0.25)
ax2.set_ylim(-0.25,0.25)
ax3.set_ylim(-0.25,0.25)
ax4.set_ylim(-0.25,0.25)
ax5.set_ylim(-0.25,0.25)
ax6.set_ylim(-0.25,0.25)
elif self.sar.wind_speed==15:
ax1.set_xlim(-0.125,0.125)
ax2.set_xlim(-0.125,0.125)
ax3.set_xlim(-0.125,0.125)
ax4.set_xlim(-0.125,0.125)
ax5.set_xlim(-0.125,0.125)
ax6.set_xlim(-0.125,0.125)
ax1.set_ylim(-0.125,0.125)
ax2.set_ylim(-0.125,0.125)
ax3.set_ylim(-0.125,0.125)
ax4.set_ylim(-0.125,0.125)
ax5.set_ylim(-0.125,0.125)
ax6.set_ylim(-0.125,0.125)
fig.tight_layout()
fig.savefig(f'{self.output_folder}/spectra.png', dpi=150, bbox_inches='tight', pad_inches=0.1)