Abstract
A new distributed leaderless cooperative guidance algorithm is suggested for multi-directional saturation strikes against maneuvering targets. First, the finite-time disturbance observer (FDO) is used to estimate the target’s unknown maneuvers. After that, the guidance laws along the line-of-sight (LOS) direction and the LOS normal direction are designed separately based on the finite-time consensus theory. The proposed guidance law could satisfy both impact time and LOS angle constraints. Numerical singularities due to feedback linearization are avoided by nonlinear stability analysis. Finally, the effectiveness of the proposed cooperative guidance law is proved by numerical simulation arithmetic.
Highlights
In the last decade, cooperative guidance has received significant attention for its effectiveness in increasing the rate of defense penetration and aircraft-target interception
This paper proposed a new cooperative guidance law that can be applied to targets with large maneuvers
The guidance law was designed in two parts: angular cooperation and time cooperation to satisfy impact time and impact angle constraints
Summary
Cooperative guidance has received significant attention for its effectiveness in increasing the rate of defense penetration and aircraft-target interception. The cooperative attack was achieved through predefined impact angles and impact times [1–4] The limitation of this method is that it is difficult to find reasonable predetermined values. Et al [11] suggested a new cooperative guidance method that achieves simultaneous hits in multiple directions without radial velocity measurement. An extended state observer is first utilized to evaluate the target’s maneuver On this basis, a cooperative guidance law that enables a head-on saturation attack is proposed based on the leader-follower model. Et al [22] proposed a three-dimensional nonlinear DCGL that enables multiple vehicles to simultaneously attack a maneuvering target at a predetermined LOS angle. This paper investigates the cooperative guidance issue for maneuvering targets and proposes a new guidance law with the following advantages: 1.
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