Investigation on electromagnetic responses of some complex wire-surface composite objects using hybrid TDIE-TDPO based MOT method

An efficient hybrid method, based on time-domain integral equation (TDIE) and time-domain physical optics (TDPO), is proposed for investigating on electromagnetic responses of some complex wire-surface composite objects illuminated by an electromagnetic pulse (EMP), respectively. Three triangular-type basis functions are used to represent the currents on the bodies, wires, and wire/surface junctions, respectively. A set of hybrid TDIE-TDPO equations are solved by marching-on-in-time scheme (MOT). In comparison with the full TDIE-based MOT method, computational complexity is reduced drastically using our developed hybrid TDIE-TDPO method, and with the accuracy maintained successfully. Numerical results of EMP responses of some composite objects are given to demonstrate its versatility, accuracy and efficiency.