Design method of micro-pulse laser radar optical path parameter topological structure

Abstract

The invention discloses a design method of a micro-pulse laser radar optical path parameter topological structure, belongs to the technical field of pulse measurement, is used for designing the optical path parameter topological structure, and comprises the following steps: establishing an all-optical path parameter topological model; topological optimization is carried out, and a design domain, a design load, constraints and boundary conditions are defined; based on the SIMP model, solving the quality characteristics, the element stiffness matrix and the node displacement of the discrete finite element unit; solving a light path total structure function and sensitivity; judging a convergence condition, and establishing a continuous light path structural body topological optimization model; through CFD numerical simulation, a working load in a running state is obtained to serve as an optimization condition of topological optimization, and an optical path structure reconstruction model is established for mass distribution of a topological optimization result; and carrying out size optimization analysis on the light path structure reconstruction model, and verifying results of weight reduction and rigidity increase of a topological optimization result. According to the invention, through topological optimization, a mass distribution result with a complete force transmission path and a clear structure is obtained.

Description

technical field [0001] The invention discloses a design method of a micro-pulse laser radar optical path parameter topology structure, which belongs to the technical field of pulse measurement. Background technique [0002] The design of the optical path is a key factor in the measurement quality of the micropulse lidar, which directly affects the attenuation of the echo signal in the process of transmission or reflection. Aerosol refers to a heterogeneous system composed of solid and liquid particles suspended in a gas and a gas carrier. At the same time, these particles have physical and chemical characteristics independent of air, and these characteristics are exactly what we need to pay attention to and study. Micropulse lidar can use the scattering and absorption of aerosol particles to laser light, measure the backscattering of aerosol, and invert the distribution of atmospheric aerosol extinction coefficient with height, so as to obtain the distribution of aerosol in...

AI Technical Summary

Problems solved by technology

[0005] The present invention proposes a method for designing the topological structure of micro-pulse laser radar optical path parameters, which solves the problem that in the prior art, the mass of each optical device of the laser radar optical path connected to the whole is relatively large, the overall structure of the optical path takes up a large space, the structure is not compact, and Insufficient rigidity, lack of stability, etc.

Images