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wradlib.georef.satellite.GeorefSatelliteMethods

wradlib.georef.satellite.GeorefSatelliteMethods#

class wradlib.georef.satellite.GeorefSatelliteMethods[source]#

Bases: object

wradlib xarray SubAccessor methods for Georef Satellite Methods.

correct_parallax(drt, **kwargs)[source]#

Adjust the geolocations 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:
Returns:

obj (xarray.Dataset) – obj with added coordinates in ground radar projection and range

dist_from_orbit(bw_sr, freq, re)[source]#

Returns range distances of SR bins (in meters) as seen from the orbit

With SR, we refer to precipitation radars based on space-born platforms such as TRMM or GPM.

Parameters:

  • obj (xarray.Dataset)

  • bw_sr (float) – Beam width of SR in degree.

  • freq (int) – Frequency index of PR.

  • re (float) – earth radius [m]

Returns:

obj (xarray.Dataset) – obj with added PR bin range distances from SR platform in orbit.

correct_parallax(drt, **kwargs)

Adjust the geolocations of the SR pixels

dist_from_orbit(bw_sr, freq, re)

Returns range distances of SR bins (in meters) as seen from the orbit
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