Sliding-mode-control based Cooperative Guidance Law in Active Aircraft Defense for Measurement Observability Enhancement
The active aircraft defense problem with unknown attacking missile's guidance law is considered,and the one-way and two-way cooperation modes for a target aircraft and a defending missile are introduced.Cooperative guidance laws for the target and defender are proposed by using sliding mode control,which can enhance the measurement observability and meanwhile guarantee the successful defensive interception.A sliding surface is firstly constructed,considering both the requirements of estimation enhancement and successful interception.And then the one-way and two-way cooperative guidance laws are derived,by adopting the double-power reaching law and the state-feedback based exponential reaching law respectively.Compared with one-way cooperative guidance law,the two-way cooperative guidance law is optimized by introducing the cost function of control effort for the target and defender.Meanwhile,in two-way cooperation mode,the target aircraft can take the cooperative maneuver to help defender impact the attacking missile with less control effort.Simulation results show that the proposed cooperative guidance law can guarantee both the good measurement observability and the well defensive guidance accuracy.
active aircraft defensecooperative guidance lawsliding mode controlmeasurement observability
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