On 4 Feb 2017, at 2:02 am, Lili Feng <Lili.Feng@colorado.edu> wrote:

Hi everyone,

I’m currently using the function obspy.signal.array_analysis.array_processing to perform beamforming.

Does anyone know what formula that the function used to compute the absolute power and the relative power? Is there any paper describing the algorithm? 

The obspy website provides a reference paper:

Kværna, T. and Ringdal, F. (1986),

Stability of various f-k estimation techniques,

in Scientific Report: Semiannual Technical Summary 1 - 1986/1987, NORSAR, Kjeller, Norway.

But unfortunately, I cannot find it on internet…Anyone has a electronic version of the paper?

Thanks in advance!

Lili

--

Lili Feng

Ph.D Student
Center for Imaging the Earth's Interior

Department of Physics

University of Colorado Boulder

+1-(720)-412-4379

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