Comparing of proportional guidance and robust geometric of missile engagement geometry

For the issue of engagement geometry, the modern guidance laws can attack the adversarial and high maneuvering targets. Robust geometric in modern guidance laws is based on the classical differential geometry curve theory and Lyapunov stability theory. In this paper, process of intercepting maneuvering target using robust geometric is simulated. In the condition that other simulation parameters are the same, guidance trajectories of proportional guidance and robust geometric are compared and analyzed. Simulation results prove that trajectory of robust geometry is straighter, and distribution of required normal overload is reasonable. Robust geometry is a more precision and critical navigation law.