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Hello Dave,
Thanks for all,
I would like a reference on digital signal processing, because I didn't understand very well what you said.
thanks
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I would recommend getting a copy of
Understanding Digital Signal Processing, 3rd Ed, R. G Lyons.
Also read this document. There are plenty of references at the end of it as well.
http://www.ovro.caltech.edu/~dwh/correlator/pdf/esc-320paper_hawkins.pdf (
http://www.ovro.caltech.edu/%7edwh/correlator/pdf/esc-320paper_hawkins.pdf)
In these slides, you will see power spectra calculated from radio galaxies
http://www.ovro.caltech.edu/~dwh/correlator/pdf/esc-320slides_hawkins.pdf (
http://www.ovro.caltech.edu/%7edwh/correlator/pdf/esc-320slides_hawkins.pdf)
Cheers,
Dave