In the context of spectral estimation, this paper examines the use of an ‘orthonormal basis’ wherein prior knowledge (in the form of fixed poles) may be incorporated in the solution and FIR structures are then seen as a special case of implicitly involving prior knowledge of all poles at the origin. The main technical results are ones that quantify the accuracy of the resulting spectral estimat...

in this paper, an advanced formulation of the spectral finite element method (sfem) is presented and applied in order to carry out site response analysis of 2d topographic structures subjected to vertically propagating incident in-plane waves in time-domain. the accuracy, efficiency and applicability of the formulation are demonstrated by solving some wave scattering examples. a numerical param...