Fast Integral Equation Methods for Solving Scattering from Bodies of Revolution (Invited)

摘要

The analysis of scattering from multiple Bodies of Revolution (BoR) has important applications in microwave remote sensing, radar imaging and other areas. Due to the rotational symmetry, the three dimensional scattering and radiation problems from BoR structures can be reduced to series of two dimensional problems and solved by method of moment (BoR-MoM). This characteristic greatly reduced both the computational time and storage for solving this kind of problems. To further improve the efficiency of the BoR method, a spectral integral method is applied to combined with the BoR method for the single BoR problems. Furthermore, to extend the application of BoR method to multiple BoRs problems, two methods are introduced: The mode characteristic basis function method is applied as a direct solver for the multiple right-hand problems, while a fast iterative solver based on the multi-region iterative method is applied which is more suitable for the mono right-hand problems. The typical numerical results for all the methods are given to demonstrate the accuracy and efficiency.