mc_antenna.cc File Reference

Monte Carlo Antenna implementation. More...

#include "mc_antenna.h"
#include <cfloat>
#include <sstream>

Go to the source code of this file.

Functions
Numeric	ran_gaussian (Rng &rng, const Numeric sigma)
	ran_gaussian. More...
Numeric	ran_uniform (Rng &rng)
	ran_uniform. More...
void	rotmat_enu (MatrixView R_ant2enu, ConstVectorView prop_los)
	rotmat_enu. More...
void	rotmat_stokes (MatrixView R_pra, const Index &stokes_dim, const Numeric &f1_dir, const Numeric &f2_dir, ConstMatrixView R_f1, ConstMatrixView R_f2)
	rotmat_stokes. More...
ostream &	operator<< (ostream &os, const MCAntenna &)

Variables
const Numeric	PI
const Numeric	DEG2RAD
const Numeric	RAD2DEG

Detailed Description

Monte Carlo Antenna implementation.

Author

Cory Davis cdavi.nosp@m.s@st.nosp@m.affma.nosp@m.il.e.nosp@m.d.ac..nosp@m.uk

Date

2005-12-01

Definition in file mc_antenna.cc.

Function Documentation

operator<<()

ostream& operator<<	(	ostream &	os,
		const MCAntenna &
	)

Definition at line 247 of file mc_antenna.cc.

ran_gaussian()

Numeric ran_gaussian	(	Rng &	rng,
		const Numeric	sigma
	)

ran_gaussian.

Returns the gaussian random deviate. Draw a random normal (Gaussian) deviate. Polar (Box-Mueller) method; See Knuth v2, 3rd ed, p122.

Parameters

[in]	rng	Rng random number generator instance.
[in]	sigma	Standard deviation parameter for gaussian distribution.

Author

Cory Davis

Date

2003-12-01

Definition at line 38 of file mc_antenna.cc.

References Rng::draw(), sqrt(), ARTS::Var::x(), and ARTS::Var::y().

Referenced by MCAntenna::draw_los(), and psd_cloudice_MH97().

ran_uniform()

Numeric ran_uniform

(

Rng &

rng

)

ran_uniform.

*** FIXMEDOC ***

Definition at line 55 of file mc_antenna.cc.

References Rng::draw().

rotmat_enu()

void rotmat_enu	(	MatrixView	R_ant2enu,
		ConstVectorView	prop_los
	)

rotmat_enu.

Calculates rotation matrix from antenna frame to ENU frame. The columns of the rotation matrix are the v, h, and k components of the propagating wave in the ENU frame.

Parameters

[out]	R_ant2enu	rotation matrix from antenna frame to ENU frame.
[in]	prop_los	los (zenith and azimuth).

Author

Ian S. Adams

Date

2016-09-07

Definition at line 63 of file mc_antenna.cc.

References DEG2RAD.

Referenced by MCGeneral(), and MCRadar().

rotmat_stokes()

void rotmat_stokes	(	MatrixView	R_pra,
		const Index &	stokes_dim,
		const Numeric &	f1_dir,
		const Numeric &	f2_dir,
		ConstMatrixView	R_f1,
		ConstMatrixView	R_f2
	)

rotmat_stokes.

Calculates the PRA matrix for the stokes vector to account for polarization rotation from ENU frame to antenna frame. Designed to handle sign properly for radiometer and radar (both tx and rx) using the bs_dir argument which (1 = away from sensor, -1 = into sensor), based on Mishchenko's convention for third Stokes. The assumption is that the polarization basis vectors have magnitude of one; therefore, a check is not made for the purpose of computational efficiency.

Parameters

[out]	R_pra	rotation matrix.
[in]	stokes_dim	number of stokes vector elements to consider.
[in]	f1_dir	propagation direction of polarization basis 1 (-1.0 or 1.0).
[in]	f2_dir	propgation direction of polarization basis 2 (-1.0 or 1.0).
[in]	R_f1	rotation matrix (into ENU) for basis f1.
[in]	R_f2	photon rotation (into ENU) for basis f2.

Author

Ian S. Adams

Date

2016-09-07

Definition at line 86 of file mc_antenna.cc.

References joker, and ARTS::Var::stokes_dim().

Referenced by MCGeneral(), and MCRadar().

Variable Documentation

DEG2RAD

const Numeric DEG2RAD

extern

Referenced by MCAntenna::draw_los(), and rotmat_enu().

PI

const Numeric PI

extern

RAD2DEG

const Numeric RAD2DEG

extern

Referenced by MCAntenna::draw_los(), and MCAntenna::return_los().