A target damage assessment method for bullet-mesh intersection of a near-burst fragment distribution field

Abstract

The invention discloses a target damage assessment method for bullet-mesh intersection of a near-burst fragment distribution field. The method comprises the steps of obtaining a centroid pixel coordinate of a fragment image; Calculating spatial three-dimensional position coordinate parameters of the fragments; Establishing coordinate systems respectively; Obtaining a fragment static distribution function at the moment of bullet explosion; Obtaining a fragment dynamic distribution function; Establishing a target damage mathematical model based on a rectangular unit; Obtaining an association model between the position, the speed, the direction vector, the fragment size and the shape of the fragment and the target damage; And obtaining the damage probability and penetration thickness of the target by the fragment field. According to the method, the calculation method for the random target damage by aiming at the fragment field can be obtained, and a theoretical basis is provided for further research on target damage assessment.

Description

technical field [0001] The invention relates to the technical field of photoelectric testing, in particular to a target damage assessment method for the intersection of projectiles and objects in the distribution field of near-explosive fragments. Background technique [0002] The fragments or shock waves formed by the warhead explosion will cause structural or functional damage to the target. Since the intensity of the shock wave decays rapidly during the propagation process, its killing range is very limited. However, the fragments impact and penetrate the target at high speed with their mass, which will cause different degrees of damage to the target. Damage effectiveness is the most important performance index in the evaluation of combat effectiveness of weapon systems. The effectiveness of fragments on target damage determines the feasibility and effectiveness of ammunition weapons to damage targets. The high-altitude explosion point damage system has the characteristi...

AI Technical Summary

Problems solved by technology

[0003] The research on the effectiveness of target damage mainly focuses on two aspects: the penetration effect of the fragment damage element or the fragment simulated projectile on the target and the vulnerability characteristics of the target, and the target damage is improved by enhancing the penetration ability, increasing the killing area, and improving the hit accuracy. The accuracy of damage assessment; the research on the effectiveness of fragment field distribution on target damage mainly focuses on the assessment of damage effectiveness in fixed distance and fixed explosion within a certain area or in a specific environment; and the effectiveness assessment method for dynamic high-speed projectile damage to targets Lack of extensive, in-depth, and systematic research, because the distribution of the fragment field of the projectile is random and uncertain, and at the moment of the explosion of the projectile, a fragment field similar to a conical hood is generated, and the spatial positions of the fragments are different, resulting in the fragmentation of the fragments. The effectiveness of target damage is also different; the existing calculation methods cannot meet the objective evaluation of the current projectile near-blast fragmentation field on target damage effectiveness

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