Missile guidance
Missile guidance refers to a variety of methods of guiding a missile or a guided bomb to its intended target. The missile's target accuracy is a critical factor for its effectiveness. Guidance systems improve missile accuracy by improving its Probability of Guidance (Pg).[1]
For broader coverage of this topic, see Guidance system.These guidance technologies can generally be divided up into a number of categories, with the broadest categories being "active", "passive", and "preset" guidance. Missiles and guided bombs generally use similar types of guidance system, the difference between the two being that missiles are powered by an onboard engine, whereas guided bombs rely on the speed and height of the launch aircraft for propulsion.
History[edit]
The concept of unmanned guidance originated at least as early as World War I, with the idea of remotely guiding an airplane bomb onto a target, such as the systems developed for the first powered drones by Archibald Low (the father of radio guidance).
In World War II, guided missiles were first developed, as part of the German V-weapons program.[2] Project Pigeon was American behaviorist B.F. Skinner's attempt to develop a pigeon-guided bomb.
The first U.S. ballistic missile with a highly accurate inertial guidance system was the short-range PGM-11 Redstone.[3]
Categories of guidance systems[edit]
Guidance systems are divided into different categories according to whether they are designed to attack fixed or moving targets. The weapons can be divided into two broad categories: Go-onto-target (GOT) and go-onto-location-in-space (GOLIS) guidance systems.[3] A GOT missile can target either a moving or fixed target, whereas a GOLIS weapon is limited to a stationary or near-stationary target. The trajectory that a missile takes while attacking a moving target is dependent upon the movement of the target. A moving target can be an immediate threat to the missile launcher. The target must be promptly eliminated in order to preserve the launcher. In GOLIS systems, the problem is simpler because the target is not moving.
