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The dipole antenna of a radar altimeter of 1947. A radar altimeter (RA), also called a radio altimeter (RALT), electronic altimeter, reflection altimeter, or low-range radio altimeter (LRRA), measures altitude above the terrain presently beneath an aircraft or spacecraft by timing how long it takes a beam of radio waves to travel to ground, reflect, and return to the craft.
1L222 Avtobaza exhibited at the 2014 Engineering Technologies International Forum [] in Zhukovsky, Russia.. Kvant 1L222 Avtobaza is an ELINT system designed to detect side looking airborne radars, air-to-ground fire-control radars and low-altitude flight control radars, as well as to provide intelligence data for the 1L125M APUR.
The FORESTER is a GMTI radar system with a resolution of 6 meters [2] that is mounted inside a 21.5-foot (6.6 m) long pod and designed to be carried under an A160 Hummingbird helicopter unmanned aerial vehicle (UAV). [3]
A Royal Air Force Boeing E-3 Sentry over North Yorkshire. An airborne early warning and control (AEW&C) system is an airborne radar early warning system designed to detect aircraft, ships, vehicles, missiles and other incoming projectiles at long ranges, as well as performing command and control of the battlespace in aerial engagements by informing and directing friendly fighter and attack ...
Radar: RAdio Detection And Ranging RAI Radio altimeter indicator RAIM Receiver Autonomous Integrity Monitoring: Or: remote autonomous integrity monitoring RALT Radar or radio altimeter: RAREPS Weather Radar Reports [6] Provided by Air Traffic Controllers RAS rectified air speed RA(T) restricted area (temporary) RAT ram air turbine: RCO
AN/MPQ-35 PAR (Pulse Acquisition Radar) high/medium-altitude threat detection radar for MIM-23 Hawk surface-to-air missile system. AN/MPQ-43 mobile High Power Acquisition Radar (HIPAR) for Nike ADM. AN/MPQ-64 Sentinel; AN/MSQ-1 Close Support Control Set for Radar Bomb Scoring (RBS) AN/MSQ-1A used for Matador Automatic Radar Control
Radar is a system that uses radio waves to determine the distance (), direction (azimuth and elevation angles), and radial velocity of objects relative to the site. It is a radiodetermination method [1] used to detect and track aircraft, ships, spacecraft, guided missiles, motor vehicles, map weather formations, and terrain.
The system monitors an aircraft's height above ground as determined by a radar altimeter. A computer then keeps track of these readings, calculates trends, and will warn the flight crew with visual and audio messages if the aircraft is in certain defined flying configurations ("modes"). The modes are: