infrared guidance

infrared guidance
A method of guidance in which an IR (infrared) seeker cell and a combined optics and flight control system act to home the vehicle onto the heat source. The illustration indicates the operation of an infrared guidance system. If the missile is headed in the proper direction, the infrared sensor will produce an a-c (alternating current) signal with a frequency equal to the rotational speed of the receiving mirror of the IR sensor. The reference signal-generator will produce a signal of the same frequency and send it to the comparator. In the comparator, the received signal and the reference signals will be phase-compared. The phase angle between the reference signal and the received signal will determine what corrective actions must be taken, and the comparator will send the appropriate commands to the servoamplifier. The controls are then actuated by the servoamplifier.

Aviation dictionary. 2014.

Игры ⚽ Нужно сделать НИР?

Look at other dictionaries:

  • Infrared countermeasures — (IRCM) are devices designed to protect aircraft from infrared homing ( heat seeking ) missiles by confusing the missiles infrared guidance system so that they will miss their target. History First deployed during the Vietnam War, they have been… …   Wikipedia

  • Infrared homing — refers to a passive missile guidance system which uses the emission from a target of electromagnetic radiation in the infrared part of the spectrum to track it. Missiles which use infrared seeking are often referred to as heat seekers , since… …   Wikipedia

  • Infrared — For other uses, see Infrared (disambiguation). An image of two people in mid infrared ( thermal ) light (false color) …   Wikipedia

  • Guidance system — A guidance system is a device or group of devices used to navigate a ship, aircraft, missile, rocket, satellite, or other craft. Typically, this refers to a system that navigates without direct or continuous human control. Systems that are… …   Wikipedia

  • Common Infrared Countermeasures program — CIRCM, the Common Infrared Countermeasures program, is a United States Army initiative intended to develop a lightweight, low cost and modular laser based infrared protection system for U.S. helicopters and light fixed wing aircraft. The… …   Wikipedia

  • Missile guidance — A guided bomb strikes a practice target 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… …   Wikipedia

  • Near Infrared Camera and Multi-Object Spectrometer — The gas giant Uranus showing cloud bands, rings, and moons of the Uranian system, taken with NICMOS in 1998 …   Wikipedia

  • Directional Infrared Counter Measures — (DIRCM) is a system produced by Elbit Systems, Northrop Grumman, ITT Corporation and BAE Systems to protect aircraft from infrared homing ( heat seeking ) man portable missiles. It is a lightweight, compact system designed to provide mission… …   Wikipedia

  • Parking guidance and information — (PGI) systems, or car park guidance systems, present drivers with dynamic information on parking within controlled areas. The systems combine traffic monitoring, communication, processing and variable message sign technologies to provide the… …   Wikipedia

  • homing guidance — i. A system in which devices built into a missile enable it to steer and keep on course toward a specific target by reacting to some distinguishing characteristic of the target, such as sound, heat, light, or radar reflectors. An infrared air to… …   Aviation dictionary

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”