96 Seismic Imaging • The SP should be located halfway between receivers, • The receiver interval e should be n (number of sensors) times the sensor interval i (e=ni). a b Figure 4.5 2D stack array geometry (after J. Meunier, 2004, IFP School course); (a) 2D stack array rules; (b) convolution of 2 combs representing a receiver array and a stack array. Some wave numbers of the stack response are zeroed by notches of the receiver response, resulting in an unaliased combined response (from Meunier, 1998). The extension of the 2D stack array theory to 3D acquisition is not straightforward. Source and receiver lines become source and receiver grids (x, y) and 1D arrays (combs) become 2D arrays (brushes).
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