The Ballistic Design of Intercepting the Ultra-low Altitude Target

According to the multipath effect problem that the missile intercepts the ultra-low altitude target, when the grazing angle near the Brewster Angle, the reflection coefficient of clutter reach the minimum, and the precision of guidance is higher. To ensure that the missile can intercept the target effectively under the vertical launch condition, a super-low-altitude intercept trajectory model is established. Then an improved proportional guidance law satisfying the Brewster Angle constraint is developed, and the overall trajectory of the missile from launch to strike target finally is designed. The Simulation show that the trajectory designed is relatively straight and meets the requirements. From the perspective of trajectory design, a way to solve the problem of the seeker detection have been explored.