ARTS built-in documentation server
Workspace Method antenna_responseGaussian
Sets up a gaussian antenna response.
The method assumes that the response is the same for all
frequencies and polarisations, and that it can be modelled as
The grid generated is approximately
si * [-xwidth_si:dx_si:xwidth_si]
where si is the standard deviation corresponding to the FWHM.
That is, width and spacing of the grid is specified in terms of
number of standard deviations. If xwidth_si is set to 2, the
response will cover about 95% the complete response. For
xwidth_si=3, about 99% is covered. If xwidth_si/dx_si is not
an integer, the end points of the grid are kept and the spacing
of the grid is reduced (ie. spacing is equal or smaller *dx_si*).
If the 2D option is selected (*do_2d*), a circular antenna is
assumed and the response is any direction follows the 1D case.
The antenna repsonse is not normalised.
Authors: Patrick Eriksson
|OUT||antenna_response||(GriddedField4)||The antenna pattern/response.|
|GIN||fwhm||(Numeric)||Full width at half-maximum|
|GIN||xwidth_si||(Numeric, Default: 3)||Half-width of response, in terms of std. dev.|
|GIN||dx_si||(Numeric, Default: 0.1)||Grid spacing, in terms of std. dev.|
|GIN||do_2d||(Index, Default: 0)||Set to 1 to create a 2D antenna pattern.|