带视场角约束的导弹协同攻击两阶段制导律

Two Stages Guidance Law for Multiple Missiles Cooperative Attacking with Field-of-view Constraint

针对多导弹协同攻击机动目标问题,提出了一种带视场角约束的导弹协同攻击两阶段制导律。第一阶段为攻击时间控制,通过在传统比例导引项中增加用于时间控制和视场角限制的偏置项,设计了一种视场角限制下带时间约束的偏置比例导引律,设计的制导律形式简单易于控制;第二阶段为攻击落角控制,设计了一种对视场角限制的新型滑模面,并结合快速幂次趋近律,提出了一种视场角限制下攻击落角控制的有限时间滑模制导律,适用于攻击机动目标。同时,给出了两种制导律的切换条件,通过制导律的切换,完成对攻击时间和落角的控制,并达到了对视场角限制的目的。仿真结果表明,所提出的制导律能够控制多枚导弹以各自指定角度协同攻击目标,并且将导弹视场角限制在导引头视场角范围内,验证了该制导律的有效性和优越性。

To solve the problem of multiple missiles cooperative attacking maneuvering target,the two stages guidance law for multiple missiles cooperative attacking with field-of-view(FOV)constraint is proposed.The first stage is attacking time control.By adding a bias for time control and FOV constraint to proportional navigation(PN),a impact time control bias proportional navigation law with FOV limit is devised which is simple and easy to control.The second stage is attacking angle control.A impact angle control finite-time sliding mode guidance law with FOV limit is devised by designing a new sliding mode surface and combining with fast power reaching law,which is applicable to maneuvering target.And the switching condition of the two guidance laws is given.By switching the guidance law,the attacking time and angle are controlled and the FOV is limited.Simulation results show that multiple missiles cooperative attack target with their own specified angles and the FOV of the missile is limited to the FOV of the seeker,which verifies the correctness and effectiveness of the proposed guidance law.