Missile threat assessment to fleet in the cooperative antimissile area

This article solved the problem of the threat assessment to fleet in the cooperative antimissile area. Analyses two issues that current threat assessment haven´t considered, one is the importance of the warship and the diffient capability between ships, the other is the importance of the information obtained in advance. Evaluated dentification of the factors and decision matrix, made the threat assessment with the information entropy. Example shows that the method is effective.