SatelliteModelCreate

This program creates a satellite macro model for the estimation of non-gravitational accelerations acting on a satellite. Mandatory input values are the satelliteName, mass, coefficientDrag and information about the satellite surfaces. For low Earth orbiting satellites, like GRACE for instance, a good guess for the drag coefficient could be 2.3. Apart from that, it is latter on possible to estimate a more precise variable drag coefficient (e.g. miscAccelerations:atmosphericDrag), which will override this initial guess. Concerning the satellite surfaces an external file must be imported which must contain information about each single satellite plate in terms of plate area, the associated plate normal and re-radiation properties (reflexion, diffusion and absorption) properties in the visible and IR part. Examplarily, a description of the macro model for GRACE can be found under: https://podaac-tools.jpl.nasa.gov/drive/files/allData/grace/docs/ProdSpecDoc_v4.6.pdf Additionally, it is possible to add further information like antennaThrust, solar panel, temporal mass changes and massInstrument using the modules option.

Name	Type	Annotation
outputfileSatelliteModel	filename
satellite	sequence
satelliteName	string
mass	double
coefficientDrag	double
surfaces	sequence
inputfile	filename	each line must contain one surface element
type	expression	0: plate, 1: sphere, 2: cylinder
area	expression	[m^2]
normalX	expression
normalY	expression
normalZ	expression
reflexionVisible	expression
diffusionVisible	expression
absorptionVisible	expression
reflexionInfrared	expression
diffusionInfrared	expression
absorptionInfrared	expression
specificHeatCapacity	expression	0: no thermal radiation, -1: direct reemission [Ws/K/m^2]
module	choice
antennaThrust	sequence
thrustX	double
thrustY	double
thrustZ	double
solarPanel	sequence
rotationAxisX	double
rotationAxisY	double
rotationAxisZ	double
normalX	double	Direction to sun
normalY	double	Direction to sun
normalZ	double	Direction to sun
indexSurface	uint	index of solar panel surfaces
massChange	sequence
time	time
mass	double
massInstrument	sequence
inputfileInstrument	filename