ras_pattern

pycraf.antenna.ras_pattern(phi, diameter, wavelength, eta_a=<Quantity 100. %>, do_bessel=False)

Antenna gain as a function of angular distance after ITU-R Rec RA.1631.

Parameters:

phiQuantity

Angular distance from looking direction [deg]

diameterQuantity

Antenna diameter [m]

wavelengthQuantity

Observing wavelength [m]

eta_aQuantity

Antenna efficiency (default: 100%)

do_besselbool, optional

If set to True, use Bessel function approximation for inner 1 deg of the pattern (see RA.1631 for details). (default: False)

Returns:

gainQuantity

Antenna gain [dBi]

Notes

• See ITU-R Rec. RA.1631-0 for further explanations and applicability of this model.