Terminal Angle Constrained Three-Dimensional Disturbance Rejection Guidance via an Incremental Twisting Algorithm

This paper proposes an incremental terminal angle constrained guidance law for the interception of maneuvering targets. The guidance commands are first derived based on the nonlinear PD-like twisting control as a base-line. Then, an incremental guidance law of the baseline command is presented based on the incremental twisting algorithm such that the robustness can be further enhanced. The incremental twisting guidance law has a simple structure and exploits the latest guidance information as closed-loop feedback to the system. Numerical simulations are carried out against various maneuvering targets with different terminal angle constraints. Simulation results show that the constructed guidance scheme is effective in achieving desired terminal angles while capturing maneuvering targets.