wradlib.georef.misc.bin_altitude¶
- wradlib.georef.misc.bin_altitude(r, theta, sitealt, re, ke=1.3333333333333333)¶
Calculates the height of a radar bin taking the refractivity of the atmosphere into account.
Based on [Doviak et al., 1993] the bin altitude is calculated as
\[h = \sqrt{r^2 + (k_e r_e)^2 + 2 r k_e r_e \sin\theta} - k_e r_e\]- Parameters
r (
numpy:numpy.ndarray) – Array of ranges [m]theta (scalar or
numpy:numpy.ndarraybroadcastable to the shape) – of r elevation angles in degrees with 0° at horizontal and +90° pointing vertically upwards from the radarsitealt (float) – Altitude in [m] a.s.l. of the referencing radar site
re (float) – earth’s radius [m]
ke (float) – adjustment factor to account for the refractivity gradient that affects radar beam propagation. In principle this is wavelength- dependent. The default of 4/3 is a good approximation for most weather radar wavelengths
- Returns
altitude (
numpy:numpy.ndarray) – Array of heights of the radar bins in [m]