Aiming at the operational concept of penetrating counterair of the U.S. Air Force， in order to meet the requirements of target analysis of anti penetrating counterair operation， a threat assessment method for penetrating counterair operational aircraft is proposed. According to the characteristics of penetrating counterair operation， the aircraft threat assessment indicators is set up， and a threat assessment indicator system for penetrating counterair operational aircraft is built； based on the analytic hierarchy process， the penetrating counterair operational aircraft threat assessment model is established and the threat ranking of penetrating counterair operational aircraft is obtained. The effectiveness and rationality of the proposed threat assessment method are verified by case calculation， which can provide a basis for target analysis and strategy research of anti penetration counterair operation.

The effectiveness evaluation of emergency repair on equipment plays an important role in repair force construction and repair decision-making.Aiming at the uncertainty and randomness of qualitative index quantification,based on the uncertainty quantification method and cloud model,an effectiveness evaluation model of emergency repair on equipment is proposed.The feasibility of the model is verified through an example.Based on the evaluation results,the advantages and disadvantages of the repair capacity building are analyzed,and the methods to strengthen the emergency repair efficiency are presented. The evaluation model provides method basis and technical support for comprehensively improving the building capacity of the emergency repair.