Regional electromagnetic environment ray propagation path parallel search method

Abstract

The invention discloses a regional electromagnetic environment ray propagation path parallel search method. The method comprises the steps that an electromagnetic environment region to be calculated is rasterized, parallel search is conducted on all ray propagation paths starting from a radiation source, statistics is conducted on all paths reaching grids, and the field intensity distribution of the whole region is obtained. The regional electromagnetic environment ray propagation path parallel search method has the advantages that as field intensity calculation of a small grid point in the region is completed, calculation of the field intensity distribution of the whole region is completed, and therefore the calculation quantity is greatly reduced; all the ray paths in the region can be searched for concurrently, and parallel computing architectures including cuda, OpenCL, open MP, Mpi, MapReduce and the like are quite suitable for accelerating the search process; the calculation quantity of the field intensity distribution of the whole region is reduced into the calculation quantity of the small grid point in the region, the additional calculation quantity caused by the size increase of the region is greatly reduced, and the bottleneck limiting the regional electromagnetic calculation is broken.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic computing, and in particular relates to a parallel search method for ray propagation paths in a regional electromagnetic environment. Background technique [0002] In predicting the propagation characteristics of radio waves in areas such as urban communities and electronic shooting ranges, the ray tracing method applied to the search of regional ray propagation paths has been widely used. It simplifies the propagation of electromagnetic waves on the path to direct, reflection and diffraction. The attenuation loss on each propagation path is established, and the total field strength is derived from the contribution of each path to the field. [0003] In order to obtain the electromagnetic field strength distribution of the whole region, the traditional ray tracing method can only obtain the field strength of a point in the region by searching all the ray propagation paths in the whole regi...

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Problems solved by technology

[0003] In order to obtain the electromagnetic field strength distribution of the whole region, the traditional ray tracing method can only obtain the field strength of a point in the region by searching all the ray propagation paths in the whole region once, that is, the calculation of the field strength of a point in the region is done through traversal search The ray path of the entire area is determined. To obtain the field strength distribution of the entire area, it is necessary to perform multiple serial traversal searches on the ray propagation path in the entire area. Requirements for fast search of medium-ray propagation paths

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