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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] These guidance technologies can generally be divided up into a number of categories, with the broadest categories being "active", "passive", and "preset" guidance.
It can then give electronic instructions to the missile that correct its flight path so it is flying along a straight line from the sighting device to the target. Most antitank SACLOS systems such as Milan and TOW use a strobe or flare ( visible , infrared (IR) or ultraviolet (UV) light) in the tail of the missile with an appropriate sensor on ...
The Precision Strike Missile (PrSM; PRI-zim) is a short-range ballistic missile developed by the United States Army to replace the MGM-140 ATACMS. The US Army ...
A torpedo can be preset to travel in a certain direction, or even travel for a certain period and then turn, but if it takes inertial guidance to compensate for unanticipated water currents that could otherwise drag it off target.
Since so many types of missile use this guidance system, they are usually subdivided into four groups: A particular type of command guidance and navigation where the missile is always commanded to lie on the line of sight (LOS) between the tracking unit and the aircraft is known as command to line of sight (CLOS) or three-point guidance.
A missile (blue) intercepts a target (red) by maintaining constant bearing to it (green) Proportional navigation (also known as PN or Pro-Nav ) is a guidance law (analogous to proportional control ) used in some form or another by most homing air target missiles . [ 1 ]
The term is generally used in reference to missile guidance systems, and specifically to missiles that use more than one guidance system through the missile's flight. Computer simulation of artillery rocket using GPS trajectory correction fuze in the terminal phase
Modern TERCOM systems use a different concept, based on the altitude of the ground over which missile flies and measure by radar altimeter of the missile and comparing that to measurements of prerecorded terrain altitude maps stored in missile avionics memory. TERCOM "maps" consist of a series of squares of a selected size.