This class handles the solar Doppler stretch to calculate the shift of the solar lines with respect to the telluric lines. More...

#include <solar_doppler_shift_polynomial.h>

Inheritance diagram for FullPhysics::SolarDopplerShiftPolynomial:

Collaboration diagram for FullPhysics::SolarDopplerShiftPolynomial:

Public Member Functions
	SolarDopplerShiftPolynomial (const Time &t, const DoubleWithUnit &lat, const DoubleWithUnit &sol_zen, const DoubleWithUnit &sol_az, const DoubleWithUnit &elevation, const Constant &constant=DefaultConstant(), bool apply_doppler_shift=true)
	Create a SolarDopplerShiftPolynomial. More...

	SolarDopplerShiftPolynomial (double Doppler_shift, const Time &t, const Constant &constant=DefaultConstant(), bool apply_doppler_shift=true)
	Create a SolarDopplerShiftPolynomial. More...

virtual	~SolarDopplerShiftPolynomial ()

double	doppler_shift () const

virtual SpectralDomain	doppler_stretch (const SpectralDomain &Spec_domain) const
	Shift wavenumbers to account for doppler stretch. More...

virtual void	print (std::ostream &Os) const
	Print description of object. More...

std::string	print_to_string () const
	Print to string. More...

virtual DoubleWithUnit	solar_distance () const
	Return Earth-Sun distance. More...

DoubleWithUnit	solar_velocity () const
	Velocity of the center of the earth to the center of the sun. More...

DoubleWithUnit	total_velocity () const
	Total velocity, including rotation of earth. More...

Detailed Description

This class handles the solar Doppler stretch to calculate the shift of the solar lines with respect to the telluric lines.

This implementation uses a fit based on a 6th order polynomial fit to data from http://eclipse.gsfc.nasa.gov/TYPE/TYPE.html

Definition at line 17 of file solar_doppler_shift_polynomial.h.

Constructor & Destructor Documentation

◆ SolarDopplerShiftPolynomial() [1/2]

SolarDopplerShiftPolynomial::SolarDopplerShiftPolynomial	(	const Time &	t,
		const DoubleWithUnit &	lat,
		const DoubleWithUnit &	sol_zen,
		const DoubleWithUnit &	sol_az,
		const DoubleWithUnit &	elevation,
		const Constant &	constant = `DefaultConstant()`,
		bool	apply_doppler_shift = `true`
	)

Create a SolarDopplerShiftPolynomial.

Parameters

t	Time of sounding.
lat	The geodetic latitude on the Earth's surface
sol_zen	Solar zenith angle
sol_az	Solar azmimuth angle (direction looking FOV->sun) in degrees east of north
elevation	Elevation of point
constant	Instance of Constant subtype, used for solar_distance_param
apply_doppler_shift	Indicates if we should apply the doppler shift or not. If this is false, then we just pass the wave numbers through unchanged in doppler_stretch.

Definition at line 103 of file solar_doppler_shift_polynomial.cc.

◆ SolarDopplerShiftPolynomial() [2/2]

SolarDopplerShiftPolynomial::SolarDopplerShiftPolynomial	(	double	Doppler_shift,
		const Time &	t,
		const Constant &	constant = `DefaultConstant()`,
		bool	apply_doppler_shift = `true`
	)

Create a SolarDopplerShiftPolynomial.

This variation explicitly takes the doppler shift to apply. This is useful for FTS, where we want to use the doppler shift supplied in the runlog rather than calculating our own. Note that the solar distance calculation is still done by the fixed polynomial, only the doppler shift is changed.

Parameters

t	Time of sounding.
Doppler_shift	The doppler shift factor to use.
constant	Instance of Constant subtype, used for solar_distance_param
apply_doppler_shift	Indicates if we should apply the doppler shift or not. If this is false, then we just pass the wave numbers through unchanged in doppler_stretch.

Definition at line 152 of file solar_doppler_shift_polynomial.cc.