Study The Correlation Model Between Space Explosive Fragment Distribution And Target Damage

The damage efficiency of the weapon combat system to target is the most important performance criteria for combat effectiveness assessment in the weapon system.The fragmentation field formed by the ammunition weapon explosion in space affects the pros and cons of target damage efficiency,and the spatial distribution field of the fragment determines the feasibility and effectiveness of ammunition weapon damage target.It is more difficult to evaluate the damage effectiveness of the damage system due to the high speed of target,the wide distribution of fragments and the complexity of both sides’ battle strategy.In order to accurately evaluate the damage effectiveness caused by the spatial distribution of fragments,it is necessary to establish the correlation model between the distribution of space explosive fragments and the target damage.In this paper,the ternary system composed of projectile,fragment distribution field and target is included in the research of target damage effectiveness evaluation.The location parameters of spatial fragment distribution are obtained by combining with digital refocusing technology and the model of intersection test of double light field camera.At the same time,analyze the correlation mechanism between the fragment distribution parameters and the target damage.It is theoretical basis for establishing damage correlation model of target.Establish the correlation model of spatial explosion fragment distribution and target damage obtain the target area damage probability and fragment damage probability by using the fragment field to correlate the target damage area and fragment penetration thickness.obtain the calculation functions of the target damage area and the calculation functions of the penetration thickness of the fragment through the distribution parameters such as the spatial distribution density of the fragment,the energy of the fragment damage,and the velocity distribution of the fragment.The dynamic virtual simulation method is used to reproduce the process of target damage,and it is verified that different fragment distribution fields will cause different damage results to the target.Combined with the simulation,it turns out the area damage probability of the target will gradually increase with the spatial distribution density of the fragment,the effective number of fragments and the radius of the fragment distribution field under different spatial distribution conditions.The penetrated damage proportion of fragment is proportional to the velocity of the fragment and the kinetic energy of the fragment under same spatial distribution conditions.However,there is a certain rate attenuation law due to the flight of the fragment.The smaller decay of the fragment velocity,the smaller the penetration thickness of the fragment.The damage probability of the fragment penetration is inverse to the decay law of the fragment velocity.The area damage probability of the target is more obvious than the fragment penetration damage probability to the total damage probability of the target.At the same time,establish the target damage level evaluation model based on Bayesian network by using the damage probability as the network node.Through the damage information such as target area,fragment penetration thickness and target damage probability,get the damage level of the target by the target damage level evaluation system.This paper uses Creator software to build 3D model of projectile,target,fragment field and terrain.The processing program of target damage dynamic simulation based on the spatial distribution field of the fragment is compiled by using Microsoft Visual Studio 2005 and algorithm program is debugged.In the environment of Vega Prime,the target damage scene simulation design is realized and the target damage level evaluation platform is constructed.