Analysis of Guidance Laws with Non-monotonic Line-of-Sight Rate Convergence

This study presents analyses of guidance laws that involve non-monotonic convergence in heading error from a new perspective based on an advanced stability concept. Pure proportional navigation with range-varying gain is considered, and the condition to guarantee asymptotic collision course investigated while allowing exhibit patterns intermediate diversion. The extended criterion considered this allows local increase Lyapunov function some finite intervals, which less conservative than standard theorem. existing involving intentional modulation as well design are discussed respect criterion.