The Fourier transform of the crosscorrelation of g1(t) and g2(t) is
where are the Fourier transforms of , and the superscribed bar indicates a complex conjugate. Here is called the cross-energy spectrum. See Figure F-22 and Sheriff and Geldart (1995, 285, 538, and 541-542) .
- Sheriff, R. E. and Geldart, L. P., 1995, Exploration Seismology, 2nd Ed., Cambridge Univ. Press.