Simulation method of laser Doppler spectrum

By simulating the incident laser into a virtual photon group, calculating its interaction with the discrete particle population, and generating a spectrum, the problem of the Doppler spectrum of the discrete particle population in the prior art is solved, and accurate spectrum simulation and simulation are achieved.

CN120580912APending Publication Date: 2025-09-02INST OF APPLIED PHYSICS & COMPUTATIONAL MATHEMATICS
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Patent Information

Application Number
CN202510576033.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-06
Publication Date
2025-09-02

AI Technical Summary

Technical Problem

In the prior art, the laser Doppler spectrum under discrete particle swarm cannot be effectively simulated.

Method used

The incident laser is characterized as a virtual photon group, and its initial state parameters are obtained, the state parameters after the virtual photons interact with the discrete particle swarm are calculated, the frequency shift of the virtual photons is counted, and the frequency spectrum is generated. The state parameters include spatial position, propagation direction, polarization state and frequency.

Benefits of technology

Accurate simulation and simulation of the laser Doppler spectrum in discrete particle populations is realized. By simulating the transport process of the laser light field, the change of photon state parameters after the interaction between the photons and particles is calculated, and the distribution of power spectrum intensity with frequency shift is obtained.

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Abstract

The invention relates to the technical field of laser, in particular to a laser Doppler spectrum simulation method. The laser Doppler spectrum simulation method comprises the following steps: representing incident laser as a virtual photon group; obtaining state parameters of the virtual photons at the initial moment; calculating state parameters after the virtual photons and the discrete particle swarms act; counting the frequency shift of the virtual photons emitted from the discrete particle swarms to generate a frequency spectrum; according to the simulation method of the laser Doppler spectrum, in the simulation process, virtual photons are propelled in the space in the area where a particle swarm is located in the movement direction of the virtual photons so as to simulate the transportation process of a laser light field, and photon state parameter changes after interaction of the photons and particles are calculated; and counting photons which leave the regional space where the particle swarm is located and return to be received by the probe, thereby obtaining the distribution condition of power spectrum intensity along with frequency shift, and realizing accurate simulation and simulation of the laser Doppler spectrum in the particle swarm.
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