| Complex target is a complex construction with the object and rough surface background(such as a low flying aircraft, a aircraft carrier on the sea, desert environment tanks and so on),it is widely used in many fields, the EM scattering calculation is a hot problem in recent years.For complex target scattering calculation, the background rough surface is very huge so thecomputational complexity of it is completely high. The best method is to design an efficienthybrid analytical-numerical method, this paper is to use the hybrid algorithm thoughts carriedout an iterative IEM-MoM method. That is: the paper used a new analytical iterative IEM forcaculating the scattering EM field of the rough surface. For the object part, the paper chosethe traditional numerical method-MoM for an accurate result. The examples show that theiterative IEM-MoM is2.5times speed faster than MoM while uses only18%memery of itdose. Even compare with the MLFMA-MoM, the new method is also1times faster and thememory is only accounts half of it. Compare with the KA-MoM, it with the2timescalculation accuracy. And at last, the paper used MPI to do the parallelization acceleratedprocessing for the new method according to the iterative IEM’s own characteristic. Numericalexperiments show that the parallel processing further effectively improve the iterative IEMmethod calculation efficiency. As a whole, the new hybrid iterative IEM-MoM method is afast computing speed computing method with accuracy standard. |
PDF Full Text Request