Time and Angle Constraint Guidance Law Applicable to Maneuvering Target

In the modern battlefield, traditional guidance law like PNG can’t meet the needs of specific tasks. In this paper, we take terminal angle and flight time into consideration. Firstly, we use optimal control to satisfy impact angle requirement. Then, flight time error is designed to control impact time. Consider large errors caused by using the traditional estimator of time-to-go to attack maneuvering target, an improved time-to-go estimator is designed. Numerical simulations show excellent results of the devised law.