Research on Penetration Effectiveness of UAV by Means of Towed-decoy

Unmanned aerial vehicle (UAV) is attempted to be equipped with off-board towed-decoy. This type of countermeasure can be used to survive air defense effectively during the cruise phase of UAV. The index of killed probability (or relative penetration probability) is used to verify the effectiveness of the countermeasure. The penetration effectiveness is given by Monte Carlo simulation. Some conclusions of relationship between the effectiveness and engagement factors have been obtained thru statistic analysis of simulation results. A type of directional maneuvering is introduced to improve the effectiveness of UAV in some special conditions thru enhancing the efficiency of the decoy but not breaking away from surface to air missiles (SAMs). All these countermeasures will change the passive situation of UAV completely during the engaging process