Abstract: Threat assessment for the defense penetration paths of air strike aircrafts provides important evidence for evaluating and improving the deployment of air defense. Considering that traditional threat assessment methods are difficult to intuitively reflect the threat degree of each path and the value of each evaluation indicator, a novel method of threat assessment for defense penetration paths based on radar chart is proposed. The threat assessment indicator system for the defense penetration paths of air strike aircrafts is put forward. The weights of threat assessment indicators are calculated by the group decision analytic hierarchy process (AHP) and the method of cross entropy. The visualization threat assessment model for the defense penetration paths of air strike aircrafts is established with the improved radar chart method. The simulation results show that the proposed method can more clearly display the threat degree of each path and the value of each evaluation indicator, which makes the assessment results more convictive.

Key words: threat assessment, defense penetration path, radar chart, cross entropy, group decision AHP