Angular spectrum method: Difference between revisions

Content deleted Content added
Kpean (talk | contribs)
No edit summary
mNo edit summary
Line 4:
 
# Sampling the complex (real and imaginary components of a) pressure field over a grid of points lying in cross-sectional plane within the field.
# Taking the 2D-[[Fast Fourier transform|FFT]] (two dimensional [[Fourier Transform]]) of the pressure field contour - this will decompose the field into a 2D "angular spectrum" of component plane waves each traveling in a unique direction.
# Multiplying each point in the 2D-FFT by a propagation term which accounts for the phase change that each plane wave will undergo on its journey to the prediction plane.
# Taking the 2D-IFFT (two dimensional inverse [[Fourier transform]]) of the resulting data set to yield the field contour over the prediction plane.