- kal2gpsweek - Returns the GPS-week for a given calendar date.
- readsp3 - Reads data files with satelite and clock data in SP3-format from a file. (experimentell)
- readyuma - Reads the almanac data in yuma-format from a file. (experimentell)
- skyplot - generate a skyplot
- xyz2asz - Transformation: Cartesian (WGS84) to topozentric coordinates.