Homing guidance system

A semiactive homing guidance system is one wherein the receiver in the missile receives... 

A modified version of this semiactive technique has the transmitter located in the missile and the receiver of the reflected energy at some remote point. Computation of the desired flight path takes place at a remote point and suitable commands are sent to the missile. This system is known as a quasi-active homing guidance system... 

The temperature in most homes is controlled by thermostats using the on-off principle. On-off control is widely used in the industry to control temperature and other variables. In fact, some missile guidance systems use on-off control, indicating that accurate control in sophisticated systems can be achieved by on-off control. That is, of course, if the system characteristics lend themselves to such type of control. 

Industry and Business. The average home contains laser devices such as CDs (discs and players) and DVDs (discs and players) and home computers, televisions, and telephones that are often connected to a fiber-optic cable network. Many homes and businesses use one or more laser printers. Virtually every retail establishment has a laser bar-code scanner. The military uses laser devices ranging from inexpensive pointers to guidance systems, which can cost many thousands of dollars. These expensive devices offer a continuous revenue stream for a vendor as they are only used once. The United States automobile... 

Beam-rider guidance with semi-active homing is employed to direct the missile against a target designated by the ship s tactical data system. Terrier is launched by a solid fuel rocket booster and propelled by a solid fuel sustainer. The normal warhead is of the HE type with direct action or proximity fuse, but one version of.the Terrier (RIM-2D) has been produced with a... 

The prime contractor is Raytheon Co, and it is powered by the Hercules Mark 58 Mod 0 solid proplnt rocket motor. The airframe is a slim cylindrical body with a pointed ogive nose. Pivoted cruciform delta wings are mid-way along the body, indexed in line with cruciform delta tail fins. Guidance is a Raytheon semi-active Doppler radar homing system, with control by movable wings... 

An advantj e of such a system is that the launch aircraft can turn back toward its base once the missile has been launched, without any loss of control over the flight path. This permits launch and control over stand-off ranges, beyond the reach of the target s close defenses Another TV guidance technique entails locking the camera onto the target before launching the missile, which will then home automatically on where the camera is aiined, by means of on board electronics... 

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