基于改进NSGA-Ⅱ算法的双运输机重装空投研究

Heavy Equipment Airdrop of Dual Transport AircraftBased on Improved NSGA-Ⅱ Algorithm

为了提高空降部队突击突防能力,对双运输机重装空投编队多目标规划问题进行研究。首先,基于分离法分析重装空投货台运动过程,通过欧拉迭代思想构建货台动力学模型。然后,考虑到前机尾涡对后机影响,构建了双运输机编队空间位置模型。为确定双机编队位置关系的最优解,采用改进后的NSGA-II算法,引入支配强度、优化精英策略、种群等级交叉系数以及高斯变异算子,同时基于方差表示拥挤度,计算出最终结果。仿真实验数据表明,优化后的算法不仅能够提升双运输机编队飞行安全性,而且使得空投点更加密集、空投精度更高。

In order to enhance the assault and penetration capability of airborne forces,the multi-objective planning problem of heavy equipment airdrop formation of dual transport aircraft is studied.Firstly,the motion process of the cargo platform of heavy equipment airdrop is analyzed based on the separation method,and the dynamics model of the cargo platform is constructed on the basis of Euler iteration idea.Then,the spatial position model of the dual transport aircraft formation is constructed by analyzing the influence of the front aircraft's tail vortex on the rear aircraft.In order to determine the optimal solution of the relative position of the dual aircraft,the improved NSGA-Ⅱalgorithm is adopted,the dominance strength,the optimized elite strategy,the crossing operator based on individual grades in the population and the mutation operator based on Gaussian distribution are introduced,and the congestion degree is calculated based on variance,so as to obtain the final results.The simulation experimental results show that the optimized algorithm can improve the flight safety of the dual transport aircraft formation,and the airdrop points are denser with higher airdrop accuracy.