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An enhanced time domain integral equation (TDIE) solver is proposed for analysis of transient scattering problems. It entails the use of causal-delayed temporal basis functions and curvilinear Rao-Wilton-Glisson (RWG) basis functions, both of which have the potential to reduce the number of unknowns. The causal-delayed temporal basis functions have twofold effects: one is causally to eliminate the...
In this paper, a robust TDIE solver based on using the quadratic B-spline temporal basis functions and curvilinear RWG spatial basis functions for transient scattering problems by arbitrarily-shaped bodies, including tapering ones, is presented. The MOT solutions converge at exponential rate at early time and then level off at machine precision, which demonstrates wonderful stability and accuracy.
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