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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.
Some of this batch were intended for low-altitude operation and fitted with a radar altimeter, and others were intended for high-altitude operation and had a barometric altimeter. The Army later ordered over 400 improved non-recoverable Model 1102 variants of the AQM-37A. The USAF evaluated the AQM-37 in the early 1970s but was slow to adopt it.
AN/APS-21 search radar by Westinghouse Electric (1886) for part of AN/APQ-35 for Douglas F3D Skynight and Gloster Meteor NF; AN/APS-23 search radar by Western Electric for Convair B-36 North American B-45C Tornado Boeing B-47E Stratojet B-50 Superfortress B-52 Stratofortress Lockheed C-130 Hercules and Boeing C-135 Stratolifter part of AN/ASB-3
Tactical, support, drones, and strike aircraft capable of supersonic flight: Southwest Aerospace AN/ALE-45: ... High range radar altimeter: AN/APN-215:
Due to the limitations of the technology of the time, development of the "assault drone" project was given a low priority, but by the early 1940s the development of the radar altimeter and television made the project more feasible, [1] and following trials using converted manned aircraft, the first operational test of a drone against a naval ...
Maritime Modes is planned to be integrated with the RQ-4B's existing MP-RTIP radar to detect and produce synthetic aperture radar imagery of ground vehicles. [76] In November 2015, Northrop Grumman selected the Garmin International GSX 70 weather radar to be installed on Air Force Global Hawks. The GSX 70 is designed to provide operators with ...
The "ADM-141C ITALD" is similar to TALD, but is fitted with a Teledyne CAE-312 turbofan engine, which provides 0.78 kN (80 kgp / 177 lbf) thrust and was developed for a cancelled anti-radar cruise missile named "Tacit Rainbow". ITALD has a ventral intake for the turbofan, and a radar altimeter so it can maintain low-level flight at a specified ...
Pages in category "Earth satellite radar altimeters" The following 19 pages are in this category, out of 19 total. This list may not reflect recent changes. C.