What kind of guidance system is employed by the PAC-3 missile?

The PAC-3 (Patriot Advanced Capability-3) missile utilizes an inertial navigation system combined with terminal active radar guidance for its tracking and targeting capabilities. Inertial navigation allows the missile to determine its position based on its initial launch parameters and movement, which is crucial for maintaining the correct trajectory. As the missile approaches its target, it switches to terminal active radar guidance, using sophisticated radar systems to home in on the target by actively scanning and locking onto it.

This combination enables the PAC-3 missile to effectively engage and intercept incoming threats, such as tactical ballistic missiles or aircraft, by ensuring high accuracy in the terminal phase of flight. The active radar guidance is particularly important for the final targeting phase, as it allows the missile to adapt to any maneuvering by the target.