Compute the cross-power spectral density of two complex functions for a single spherical harmonic degree.

Usage

cpsd = SHCrossPowerDensityLC (cilm1, cilm2, l)

Parameters

cpsd : output, complex(dp)
The cross-power spectral density of the two complex functions for spherical harmonic degree l.
cilm1 : input, complex(dp), dimension (2, lmaxin1+1, lmaxin1+1)
The first complex function expressed in complex spherical harmonics.
cilm2 : input, complex(dp), dimension (2, lmaxin2+1, lmaxin2+1)
The second complex function expressed in complex spherical harmonics.
l : input, integer(int32)
The spherical harmonic degree. This must be less than or equal to the minimum of lmaxin1 and lmaxin2.

Description

SHCrossPowerDensityLC will calculate the cross-power spectral density of two complex functions expressed in complex 4-pi normalized spherical harmonics for a single spherical harmonic degree l. This is calculated as:

cpsd = Sum_{i=1}^2 Sum_{m=0}^l cilm1(i, l+1, m+1) * conjg[cilm2(i, l+1, m+1)] / (2l + 1).

See also

shpowerlc, shpowerdensitylc, shcrosspowerlc, shpowerspectrumc, shpowerspectrumdensityc, shcrosspowerspectrumc, shcrosspowerspectrumdensityc

Tags: fortran
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