Integrated cooperative guidance and control of strapdown missiles

This paper develops an innovative integrated cooperative guidance and control (ICGC) law for multiple strapdown missiles, and explicitly considers both the attitude dynamics and field-of-view (FOV) limitations of the seekers. First, a model is rigorously established using strict state feedback to incorporate attitude dynamics, which employs the body-line-of-sight (BLOS) angle to characterize the FOV constraints of strapdown seekers. We propose a nonlinear observer to precisely estimate aerodynamic disturbances, target maneuvers, and unmodeled dynamics. Using the BLOS angle as a critical variable for multi-missile cooperation, we derive a novel ICGC law based on the barrier lyapunov function and the dynamic surface control method. This law enables strategic cooperative geometries among multiple missiles attacking a single maneuvering target, with detailed proof of stability provided. Extensive numerical simulations demonstrate that the proposed ICGC law significantly enhances cooperative engagement capabilities, ensuring effective target attacks while adhering to the FOV constraints. This research substantially advances missile guidance and control systems, offering a robust framework for cooperatively engaging maneuvering targets.