Ephemerides of individual spacecraft and metadata for using orbits in waveform modeling. More...

#include <glass_lisa.h>

Public Attributes
char	OrbitFileName [1024]
	Filename input from `--orbit` command line argument when using numerical orbits.

int	Norb
	Size of orbit arrays.

double *	t
	time step relative to start of mission (seconds)

void(*	orbit_function )(struct Orbit , double, double , double , double )
	Function prototyp for retreiving spacecraft locations. More...

Constellation Parameters
double	L
	Average armlength of constellation.

double	fstar
	Transfer frequency $f_* = 1/(L/c)$ .

double	ecc
	Eccentricity of spacecraft orbits.

double	R
	Distance to constellation guiding center from Sun (1 AU)

Spacecraft Ephemerides
Cartesian ecliptic coordinates, in meters, where the x-y plane is the ecliptic.
double **	x
	x-coordinate at each time step

double **	y
	y-coordinate at each time step

double **	z
	z-coordinate at each time step

Derivatives of Orbits for Cubic Spline Interpolation
Stores the derivatives for the cubic spline for the location of each spacecraft ( $dx,dy,dz$ ) and some internal `GSL` workspace `acc`.
gsl_spline **	dx
	spline derivatives in x-coordinate

gsl_spline **	dy
	spline derivatives in y-coordinate

gsl_spline **	dz
	spline derivatives in z-coordinate

gsl_interp_accel *	acc
	gsl interpolation work space

Detailed Description

Ephemerides of individual spacecraft and metadata for using orbits in waveform modeling.

If numerical orbit files are provided, they are interpolated to the sample rate of the data using GSL cubic spline functions.

If not, the eccentric inclined analytic model is computed once at the data sampling rate and stored.

Member Data Documentation

void(* Orbit::orbit_function) (struct Orbit *, double, double *, double *, double *)

Function prototyp for retreiving spacecraft locations.

Parameters

[in]	time	(double)
[in]	orbit	data (Orbit*)
[out]	eccliptic	carteisian location of each spacecraft

If an orbit file is input this points to interpolate_orbits() which uses GSL cubic splines to interpolate the ephemerides at the needed time steps

Otherwise this points to analytic_orbits() which is passed an arbitrary time $t$ and returns the spacecraft location.

The documentation for this struct was generated from the following file: