wradlib.georef.satellite.correct_parallax¶
-
wradlib.georef.satellite.
correct_parallax
(sr_xy, nbin, drt, alpha)¶ Adjust the geo-locations of the SR pixels
With SR, we refer to precipitation radars based on space-born platforms such as TRMM or GPM.
The sr_xy coordinates of the SR beam footprints need to be in the azimuthal equidistant projection of the ground radar. This ensures that the ground radar is fixed at xy-coordinate (0, 0), and every SR bin has its relative xy-coordinates with respect to the ground radar site.
Parameters: - sr_xy (
numpy.ndarray
) – Array of xy-coordinates of shape (nscans, nbeams, 2) - nbin (int) – Number of bins along SR beam.
- drt (float) – Gate lenght of SR in meter.
- alpha (
numpy.ndarray
) – Array of local zenith angles of the SR beams with shape (nscans, nbeams).
Returns: - sr_xyp (
numpy.ndarray
) – Array of parallax corrected coordinates of shape (nscans, nbeams, nbins, 2). - r_sr_inv (
numpy.ndarray
) – Array of ranges from ground to SR platform of shape (nbins). - z_sr (
numpy.ndarray
) – Array of SR bin altitudes of shape (nscans, nbeams, nbins).
- sr_xy (