Helper Functions
================

Constants
---------

.. autodata:: py1090.helpers.EARTH_RADIUS

Position geometry
-----------------

.. autofunction:: py1090.helpers.distance_between
.. autofunction:: py1090.helpers.bearing_between

Unit conversion
---------------

.. autofunction:: py1090.helpers.knots_to_kmh
.. autofunction:: py1090.helpers.knots_to_mps