Infrared Homing - Tracking


Most infrared guided missiles have their seekers mounted on a gimbal. This allows the sensor to be pointed at the target when the missile is not. This is important for two main reasons. One is that before and during launch, the missile cannot always be pointed at the target. Rather, the pilot or operator points the seeker at the target using radar, a helmet-mounted sight, an optical sight or possibly by pointing the nose of the aircraft or missile launcher directly at the target. Once the seeker sees and recognises the target, it indicates this to the operator who then typically "uncages" the seeker (which is allowed to follow the target). After this point the seeker remains locked on the target, even if the aircraft or launching platform moves. When the weapon is launched, it may not be able to control the direction it points until the motor fires and it reaches a high enough speed for its fins to control its direction of travel. Until then, the gimballed seeker needs to be able to track the target independently.

Finally, even while it is under positive control and on its way to intercept the target, it probably will not be pointing directly at it; unless the target is moving directly toward or away from the launching platform, the shortest path to intercept the target will not be the path taken while pointing straight at it, since it is moving laterally with respect to the missile's view. The original heat-seeking missiles would simply point towards the target and chase it; this was inefficient. Newer missiles are smarter and use the gimballed seeker head combined with what is known as proportional guidance in order to avoid oscillation and to fly an efficient intercept path.

Read more about this topic:  Infrared Homing

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Tracking can refer to:

  • Animal migration tracking by attaching a tag to the animal.
  • Tracking (education), separating children into different classes according to their academic ability
  • Tracking, in computer graphics, a vital part of match moving
  • Tracking, in portfolio management, matching or comparing with a stock market index
  • Tracking, in automotive engineering, a synonym for Toe (automotive)
  • Tracking, a subject of dead reckoning, concerning setting up a track on other objects momentarily viewed from the observer's own location
  • Tracking (typography), the process of uniformly increasing or decreasing the space between all letters in a block of text
  • The purpose of a satellite tracker (disambiguation)
  • Tracking (commercial airline flight), the means of tracking civil airline flights in realtime.
  • Tracking (hunting), the science and art of learning about a place via animal trails and other environmental evidence
  • Tracking (Scouting), a Scouting activity
  • Tracking, an electrical pre-breakdown phenomenon, see Electrical treeing
  • Tracking shot, a filming technique also known as a dolly shot
  • The association of individual detections from a radar system, performed by a radar tracker
  • Target tracking, one of the elements of Go-Onto-Target systems of missile guidance

In logistics

  • Track and trace concerns a process starting with determining the current and past locations and other status of property in transit. Tracking and tracing is the completion of this process with uniformly building a track of such property that are forwarded to, processed for, applied in or disposed of usage.
  • Asset tracking provides regular information about objects of an inventory or any stock of mobile entities

In sports:

  • Tracking (freeflying), in skydiving, the technique of moving horizontally while in free-fall
  • Tracking (dog), the act of a dog following a scent trail
  • Tracking trial, a dog competition

In technology:

  • Optical motion tracking
  • Video tracking, finding the location of an object of the scene on each frame of the sequence, when processing a video sequence
  • Video tape tracking, alignment of the magnetic tape of a video tape recorder with respect to the reading head
  • Tracking, composing music with tracker (music software)
  • Web visitor tracking, the analysis of visitor behavior on a website

Famous quotes containing the word tracking:

    Such is the art of writing as Dreiser understands it and practices it—an endless piling up of minutiae, an almost ferocious tracking down of ions, electrons and molecules, an unshakable determination to tell it all. One is amazed by the mole-like diligence of the man, and no less by his exasperating disregard for the ease of his readers.
    —H.L. (Henry Lewis)