def get_earth_radii(self):
        """Get earth radii from prologue

        Returns:
            Equatorial radius, polar radius [m]
        """
        earth_model = self.prologue['GeometricProcessing']['EarthModel']
        a = earth_model['EquatorialRadius'] * 1000
        b = (earth_model['NorthPolarRadius'] +
             earth_model['SouthPolarRadius']) / 2.0 * 1000
        return a, b
def get_earth_radii ( self ) : earth_model = self . prologue [ 'GeometricProcessing' ] [ 'EarthModel' ] a = earth_model [ 'EquatorialRadius' ] * 1000 b = ( earth_model [ 'NorthPolarRadius' ] + earth_model [ 'SouthPolarRadius' ] ) / 2.0 * 1000 return a , b
Get earth radii from prologue

        Returns:
            Equatorial radius, polar radius [m]