Module swiftnav::geoid

Geoid height calculation

GNSS positions have a height which is usually referenced to a ellipsoid, a smooth surface which very roughly approximates the mean sea level. This ellipsoid can deviate by a large amount for the actual local mean sea level due to the variations in the local gravitational field. A geoid model is built to better approximate these variations in mean sea level, and can be used to give a height relative to mean sea level which can be more helpful to an end user.

Enums

• GeoidModel
  List of potential Geoid models used

Functions

• get_geoid_model
  Gets the geoid model compiled into the Swiftnav crate
• get_geoid_offset
  Get the offset of the geoid from the WGS84 ellipsoid