Optimize scattered fields for large grid of angles

[GoogleCodeExporter]

Further optimize scattered field calculation for large grid of angles,
trying to use FFT-based ideas to transforming 3D array of polarizations to
a sphere surface in spectral space.

Original issue reported on code.google.com by yurkin on 24 Dec 2008 at 7:37

• Blocked on: #138

[GoogleCodeExporter]

Original comment by yurkin on 7 Jun 2010 at 5:46

• Changed title: Optimize scattered fields for large grid of angles

[GoogleCodeExporter]

Expanding scattered fields in spherical harmonics can be used to solve this 
issue.

Original comment by yurkin on 6 Jul 2013 at 10:41

• Now blocked on: #138

[myurkin]

A recent relevant paper is http://dx.doi.org/10.1016/j.jqsrt.2015.06.024, which describes a FFT-based approach.

[myurkin]

Some approach from the family of non-equidistant FFTs may potentially help here.