radar altimeter


Also found in: Dictionary, Acronyms, Wikipedia.

radar altimeter

[′rā‚där al′tim·əd·ər]
(navigation)
A radio altimeter, useful at altitudes much greater than the 5000-foot (1500-meter) limit of frequency-modulated radio altimeters, in which simple pulse-type radar equipment is used to send a pulse straight down from an aircraft and to measure its total time of travel to the surface and back to the aircraft. Also known as high-altitude radio altimeter; pulse-type altimeter.

radar altimeter

radar altimeterclick for a larger image
An altimeter that uses radar to find the exact height of the aircraft above the surface. There are basically two types of radar altimeters—those employing pulse radar and others that are frequency-modulated continuous wave radar. The time interval between the transmitted and the received signals is measured in terms of feet or meters above the surface.
References in periodicals archive ?
Army awarded Honeywell Aerospace (NYSE: HON) $41 million to continue supplying its combat-proven radar altimeters for use across the Army's full fleet of helicopter platforms.
The new product is priced at USD2,995, or USD2,525 when purchased with FreeFlight Systems' TSO certified RA-4000 or RA-4500 Radar Altimeters.
The Poseidon-3C instrument is the immediate successor to the Poseidon-3B radar altimeter mounted on the Jason-3 satellite, tentatively planned for launch in December aboard a SpaceX Falcon 9 v1.
About Eastern OptX Founded in 1998, Eastern OptX designs and develops radar altimeter test sets, radar range channel replicators, radar target repeaters, and radio channel (air interface) replicators for the RF and microwave applications.
At 400 feet my radar altimeter went off, and I called to the crew, "Three down, and we are cleared to land.
The Ka band altimeter, ALTIKA, provided by CNES consists of a Ka-band radar altimeter, operating at 35.
For example, if you're adjusting the radar altimeter, your hands must go into the bay while the vaneaxial fan spins.
I picked out the Visual Approach Slope Indicators (VASIs) and started down, but I couldn't tell how high above the runway we actually were because of the rain and blur of lights (we typically didn't use the Radar Altimeter to call out altitudes).
The Jason satellite, which is jointly operated by the United States and France and is equipped with a radar altimeter, happened to pass over the eastern Indian Ocean about 2 hours after the quake occurred.
He released the collective trim switch to engage the automatic flight control system (AFCS) radar altimeter hold.
The crew carried out visual checks and a radar altimeter confirmed that the aircraft was at the correct height.
Built by Rutan's brother, Burt, at his Scaled Composites aircraft plant in Mojave, the carbon-fiber capsule is fitted with a pilot station and private sleeping quarters, satellite communication and navigation systems, a radar altimeter and satellite locater beacon.

Full browser ?