Three-Dimensional Impact Angle Control Guidance Against Maneuvering Targets With Field-of-View Constraint

The 3-D impact angle control guidance problem against maneuvering targets with field-of-view (FOV) constraint is addressed in this article. An auxiliary vector is designed, based on which a 3-D guidance law structured as a biased proportional navigation guidance law is proposed. Under the proposed guidance law, the auxiliary vector converges to the origin within finite time. Furthermore, the leading angle property during the whole guidance process is analyzed, and the FOV restriction will not be violated. The capturability is then analyzed while the impact angles are proved to approach the prespecified values before the impact. Finally, numerical simulation with different scenarios and comparison is carried out to demonstrate the validity of the presented guidance method.