README.md

GT Class

Class name	Function
Gobs	GNSS observation: read/edit/write/visualization
Gnav	GNSS navigation: read/edit/write/visualization
Gtime	GPS time: time system conversion
Gpos	Geodetic position: coordinate system conversion
Gvel	Velocity: coordinate system conversion
Gcov	Covariance: coordinate system conversion
Gsat	Satellite-related data: edit/visualization
Gsol	Position solution: read/edit/write/visualization
Gstat	Position status: read/edit/write/visualization
Grtk	RTK control class
Gopt	Process option: read/edit/write
Gfun	Wrapper for positioning function
C	Define constants