GPS Based Reduced-Dynamic Orbit Determination for Low Earth Orbiters with Ambiguity Fixing

Table 2

Orbit models used in this paper.

Satellite model	Cannonball model (constant surface and mass) [25]
Earth gravity field	GGM03S 75 × 75 [39]
Earth tides	Solid tides [40]
Atmospheric density	Harris-Priester [25]
Solar radiation pressure	Assuming the surface normal is always aligned with the sun; Including eclipses and distance from the sun [25]
Planetary ephemerides	Low precision model [25]
Coordinates transformations	IERS1996/IAU1980 transformations [41]