pub fn repeat_period(system: GnssSystem) -> DurationExpand description
Return the default ground-track repeat period for a GNSS constellation.
GPS, QZSS, NavIC, and SBAS default to one mean sidereal day. GLONASS,
Galileo, and BeiDou use the design repeat cycles of 8, 10, and 7 sidereal
days respectively. Use orbit_repeat_lag when a GPS-like per-satellite
broadcast-orbit refinement is available.