ارايه يك روش تحليلي براي تعيين زمان شروع فاز نهايي در يك موشك تاكتيكي براي برخورد به هدف با زاويه مناسب

An Analytical Method for Calculating Start Time of Terminal Guidance in Order to Achieving Proper Impact Angle in a Tactical Missile

The terminal phase is an intercept phase. Missile performance is dependent on: guidance law, seeker accuracy, impact angle. Impact angle should be control for most performance of warhead in target destruction. A great impact angle is not achievable because of some limitations. Start time of terminal phase is significant parameter for control of impact angle in case of surface target such as tanks and ships. This time determines impact angle to target and missile impact to ground avoidance before impact to target. This paper presents an algorithm to determination start time of terminal phase by using of biased true proportional navigation guidance and approximation of impact angle so that controls final impact angle. Maximum value of impact angle analyzes and conditions of solution existence for purposed algorithm to achieve desired impact angle is determined with a theorem declaration and proof.