Returns height difference [m] from slope distance slope_dist [m]
and vertical angle v [rad]. The default mean refraction
coefficient k is 0.13.
Earth curvature (1 / EARTH_RADIUS) and mean refraction coefficient
(k) are automatically taken into account by Leica instruments when
calculating the height difference if enabled in the settings.
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| real(kind=r8), | intent(in) | :: | slope_dist | 
                 Slope distance [m].  | 
        ||
| real(kind=r8), | intent(in) | :: | v | 
                 Vertical cycle reading [rad].  | 
        ||
| real(kind=r8), | intent(in), | optional | :: | k | 
                 Mean refraction coefficient.  |