Cross-scale multi-mechanism fusion electromagnetic scattering numerical solution method

Abstract

The invention belongs to the technical field of electronics, and particularly relates to a cross-scale multi-mechanism fusion electromagnetic scattering numerical solution method. The method comprises the following steps: 1, typical platform modeling; 2, adaptive mesh generation based on a bilinear patch for a platform model; and 3, solution of a complex structure cross-scale multi-mechanism electromagnetic disturbance coupling numerical value: carrying out the complex structure cross-scale multi-mechanism electromagnetic disturbance coupling numerical value on the bilinear patch segmented in the step 2 by using a parallel high-order moment method based on regional decomposition, namely an HOMoM-MLFMA hybrid algorithm. According to the method, through rough subdivision of a smooth structure and fine subdivision of a complex fine structure of the typical platform, adaptive grid modeling of the typical platform can be realized, and on this basis, an adaptive high-order moment method is utilized to realize accurate electromagnetic modeling.

Description

technical field [0001] The invention belongs to the field of electronic technology, and in particular relates to a cross-scale multi-mechanism fusion electromagnetic scattering numerical solution method. Background technique [0002] Complex targets usually contain a variety of physical structures, such as cavities, dihedrals, cubes, cylinders, and spheres. Different physical structures have different electromagnetic scattering characteristics. The RCS of complex targets usually does not have an analytical solution, and it is usually necessary to apply numerical calculation methods to solve the target RCS value. Generally, the surface of a complex target is first divided into individual patches, the RCS value of each patch is calculated, and then the calculated patch RCS is synthesized. The calculation method adopted needs to balance the contradiction between calculation accuracy and calculation amount. The usual geometric optics method, physical optics method and other me...

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Problems solved by technology

The usual geometric optics method, physical optics method and other methods have a huge amount of calculation, and need to be corrected before they can be used for RCS calculation problems of complex targets.

[0003] To segment complex targets, traditional MoM often uses triangles (surface meshes) for geometric modeling. Geometric modeling requires a lot of triangular meshes, and the model accuracy is not high, so geometric modeling errors will reduce the accuracy of electromagnetic calculation results. precision

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