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Questions - spectrum

Right method for finding 2-D Spatial Spectrum from CSD

I try to implement the spatial spectrum from the above equation (attached) Where kX, kY are the grid points in k space, C(w,r) - cross spectral densities between the i'th and j'th sensor(here it is a...
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pluto

python

signal-processing

fft

spectrum

cross-correlation

Votes: 0

Answers: 2

Latest Answer

It looks to me like you're zooming in on the central lobe. This would also explain why the scale doesn't go from 0 to 1. If I change these lines: kx = np.linspace(-20*k,20*k,nx) # space vector ky= n...
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Peter K.

python signal.scipy.welch for complex input returns frequency indices which are not ordered negative to positive

My aim is to plot the PSD of a complex vector x. I calculated the spectrum estimation using scipy.welch (version 1.4.1): f, Px = scipy.signal.welch(**x**, return_onesided=False, detrend=False) and th...
test-img

Idnv

python

scipy

signals

spectrum

Votes: 0

Answers: 1

Latest Answer

Think about angles a complex value moves between two samples, it can be from 0 to 360 (this is the order that welch will return), but another way to see for say 200 degrees is that it is a 360-200=160...
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Bob

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