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Electromagnetic solving method for particle launching simulation

A particle and electromagnetic technology, applied in the field of electromagnetic solving, can solve the problem of large amount of calculation of backtracking algorithm, and achieve the effect of high parallelism of calculation and increase of calculation speed.

Active Publication Date: 2012-07-25
BEIHANG UNIV
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AI Technical Summary

Problems solved by technology

The backward tracking algorithm is more accurate than the forward tracking algorithm, but the forward algorithm can calculate the situation distribution in the entire space according to the ray beam emitted once, and the reverse algorithm can only calculate one point at a time, so the backward tracking algorithm Large amount of calculation

Method used

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  • Electromagnetic solving method for particle launching simulation
  • Electromagnetic solving method for particle launching simulation
  • Electromagnetic solving method for particle launching simulation

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Embodiment Construction

[0018] Such as figure 1 Shown, the concrete implementation method of the present invention is as follows:

[0019] 1. Emit particles from the emission source, and add the emitted new particles to the particle list. The emission density of particles in various directions is mainly determined by the pattern factor of the antenna θ and φ are the angular coordinate components of a point in the spherical coordinate system.

[0020] Taking the emission source as the vertex, the space is divided into equal intervals in all directions, and the sampling interval Δθ of θ is given, The sampling interval Generally speaking

[0021] The angles after splitting are:

[0022] θ i =iΔθ i=1, 2, 3...int(π / Δθ) (1)

[0023]

[0024] defined in The number of particles emitted at one time in the range is n i no j , with a maximum value of N 1 N 2 (n i no j for n i with n j product of N 1 N 2 for N 1 with N 2 product of N 1 with N 2 is a given constant, if Then N 1 =...

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Abstract

The invention relates to an electromagnetic solving method for particle launching simulation. The electromagnetic propagation is simulated by the motion of particles, and the density of particles represents electromagnetic energy. Each particle has the attributes of position, velocity, total displacement distance, interval angle, lifetime, existence and the like, and the particles follow the electromagnetic reflection and diffraction laws. In this way, the rendering of particles can be visualized; space can be partitioned according to the required resolution, the number of particles in a grid can be counted, and the electromagnetic energy of the point can be solved; the motion of particles represents the diffusion of irradiation, and the calculation of diffusion factor can be omitted. The electromagnetic solving method has the characteristics of high accuracy, simple and visual method and high degree of parallelism, and can be applicable to various electromagnetic calculation solving and visualization systems.

Description

technical field [0001] The invention relates to an electromagnetic solution method, in particular to a method for calculating the electromagnetic distribution situation by simulating the emission of electromagnetic particles, which is used for electromagnetic calculation solution and electromagnetic situation visualization in a large area. Background technique [0002] Whether it is in the military field or in the civilian field, electromagnetism plays an important role. For a large area, it will be a huge and impossible project to use special equipment to receive or detect. Therefore, the electromagnetic It is of great significance to calculate the distribution situation. [0003] The ray tracing method (Ray Tracing) is a relatively common electromagnetic calculation method, and the ray tracing method is divided into forward tracing and reverse tracing. Forward tracing means that ray tracing starts from the emission source, emits a large number of rays at equal angular int...

Claims

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Application Information

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IPC IPC(8): G01R29/08
Inventor 张霖穆兰任磊陶飞
Owner BEIHANG UNIV
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