Developments in time-domain integral-equation modeling at Imperial College

This paper reviews the status of time-domain integral-equation modeling. It concentrates on work concerning the development of the method at Imperial College, done since the review of Gomez Martin et al. (1992). A curvilinear, isoparametric approach, incorporating Gaussian quadrature, with special treatment of singular and hypersingular integrals, is described. The approach is implicit, providing stable predictions without recourse to the averaging schemes found necessary with explicit treatments. The issues of parallelization, hybridization to time-domain optical methods, and application to dielectric and lossy targets are addressed