Abstract
Aerial threat assessment is a crucial link in modern air combat,whose result counts a great deal for commanders to make decisions.With the consideration that the existing threat assessment methods have difficulties in dealing with high dimensional time series target data,a threat assessment method based on self-attention mechanism and gated recurrent unit(SA-GRU)is proposed.Firstly,a threat feature system including air combat situations and capability features is established.More-over,a data augmentation process based on fractional Fourier transform(FRFT)is applied to extract more valuable information from time series situation features.Furthermore,aiming to cap-ture key characteristics of battlefield evolution,a bidirectional GRU and SA mechanisms are designed for enhanced features.Subsequently,after the concatenation of the processed air com-bat situation and capability features,the target threat level will be predicted by fully connected neural layers and the softmax classifier.Finally,in order to validate this model,an air combat dataset generated by a combat simulation system is introduced for model training and testing.The comparison experiments show the proposed model has structural rationality and can per-form threat assessment faster and more accurately than the other existing models based on deep learning.
基金项目
国家自然科学基金(62022015)
国家自然科学基金(62088101)
Shanghai Municipal Science and Technology Major Project(2021SHZDZX0100)
Shanghai Municipal Commission of Science and Technology Project(19511132101)
NETL
NSTL
维普
万方数据