Moving target atmospheric disturbance characteristic simulation method

Abstract

The invention discloses a moving target atmospheric disturbance characteristic simulation method. The method includes obtaining target geometry parameters, establishing target three-dimensional model,dividing grids of a target and flow field solving area; setting flow field calculation conditions, selecting a flow field calculation model, obtaining target atmospheric disturbance flow field parameters, calculating flow field refractive index distribution, calculating a refractive index gradient according to a Barron operator, calculating a disturbance atmospheric deflection transmission path through Runge-Kutta light tracing, and obtaining a deflection angle of light passing through a disturbance field. According to the method, simulation analysis is carried out on light deflection generated when ground object light passes through an atmospheric disturbance area formed by a high-speed target for the first time. The method can be used for atmospheric disturbance simulation analysis of any target flying in the atmospheric layer, can analyze the deflection condition of the ground object light of any spectral band passing through the target atmospheric disturbance area, and can also analyze the deflection condition formed by the ground object light of different spectral bands passing through the atmospheric disturbance area of the target at different incident angles. A new means isprovided for target atmospheric disturbance simulation analysis, and the method can be applied to atmospheric disturbance field characteristic research.

Description

technical field [0001] The invention relates to a method for simulating the atmospheric disturbance characteristics of a moving target, which is a new method for simulating the atmospheric disturbance characteristics caused by the high-speed movement of the target in the atmosphere. The deflection of light can provide design input for the visual observation of atmospheric disturbances by optical means, and provide a new technical means for the study of atmospheric disturbance characteristics, which can be applied to the optimization of aerodynamic shape of high-speed moving targets, low resolution and wide Detection, etc., can be applied to the background of ground objects, breaking through the limitation that the aerodynamic characteristics must be obtained in the wind tunnel, and greatly reducing the difficulty and cost of obtaining aerodynamic characteristics. Background technique [0002] The high-speed flight of a high-speed moving target in the atmosphere will inevitab...

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Problems solved by technology

Therefore, the use of wind tunnel tests to study the characteristics of atmospheric disturbances of high-speed moving targets in the atmosphere has many limitations.

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