Method for Seismic-Array-Beamforming/FK-Analysis/Capon
Parameters:
stream Stream object, the trace.stats dict like class must
contain a obspy.core.util.AttribDict with ‘latitude’, ‘longitude’ (in
degrees) and ‘elevation’ (in km), or ‘x’, ‘y’, ‘elevation’ (in km)
items/attributes. See param coordsys
win_len (Float) Sliding window length in seconds
win_frac (Float) Fraction of sliding window to use for step
coordsys valid values: ‘lonlat’ and ‘xy’, choose which stream
attributes to use for coordinates
timestamp (string) valid values: ‘julsec’ and ‘mlabday’; ‘julsec’ returns
the timestamp in secons since 1970-01-01T00:00:00, ‘mlabday’
returns the timestamp in days (decimals represent hours, minutes
and seconds) since ‘0001-01-01T00:00:00’ as needed for matplotlib
date plotting (see e.g. matplotlibs num2date)
method (int) the method to use 0 == bf, 1 == capon
store (function) A custom function which gets called on each iteration. It is
called with the relative power map and the time offset as first and
second arguments and the iteration number as third argument. Useful for
storing or plotting the map for each iteration. For this purpose the
dump function of this module can be used.
Returns:
numpy.ndarray of timestamp, relative relpow, absolute relpow,
backazimut, slowness