Patent ID: 6262943
Filing Date: 2001-07-17
Classification: G01V,G06K,H03H,Y10S

Abstract:
A method of localising noise effects in a first signals s.sub.inc by means of a representation thereof: a model signal .SIGMA.b.sub.inc comprising at least one modelled component b.sub.inc representable by a parameter set comprising at least one model parameter (a.sub.0, a.sub.1, a.sub.2, . . . , a.sub.n).sub.inc characterised in that the method comprises the steps of:(a) subtracting the model signal .SIGMA.b.sub.inc from the first signal ss.sub.inc to derive a residual signal r.sub.inc ;(b) scaling the residual signal r.sub.inc by a multiplicative pseudo-integrating factor .rho. having a value between zero and unity;(c) adding the scaled residual signal obtained in Step (b) to at least a proportion of the model signal .SIGMA.b.sub.inc to give at least one pseudo-integrated signal PIdata.sub.inc, wherein perturbing noise effects in the scaled residual signal are localised.