Radar Altimeter Systems
Thread Starter
Joined: Aug 2005
Posts: 81
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From: United Kingdom
Radar Altimeter Systems
Hey there,
Can anyone suggest some websites where I can look into buying a radar altimeter system? I have tried to google it but have only come up with a few. It needs to have preferably two antennae and a receiver and transmitter and natuarally the cost must not be ridiculous. Also it needs to be EASA approved. Any help would be much appreciated.
Cheers!
Can anyone suggest some websites where I can look into buying a radar altimeter system? I have tried to google it but have only come up with a few. It needs to have preferably two antennae and a receiver and transmitter and natuarally the cost must not be ridiculous. Also it needs to be EASA approved. Any help would be much appreciated.
Cheers!
Joined: Jun 2001
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From: UTC +8
Joined: Nov 2006
Posts: 896
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From: SoCalif
Terminology
For clarification:
Radar = RAdio Detection And Ranging: The transceiver transmits a signal burst, then listens on the same antenna, much like ATC radar. Radar altitude is computed from delay between transmit and reception of signal. . Smaller civilian and military aircraft typically use radar altimeters.
The more common Radio Altimeter transceiver on larger aircraft transmits a continuous signal through a transmit antenna, and receives on a separate but identical antenna. Radio Altitude is computed from phase difference of modulation on transmitted and received signals.
Radio altimeters provide more reliable altitude data, and are designed primarily as a landing aid, to the point of being Flight Critical sensors during Autolands. Airbus and McDouglas have used dual radio altimeters for dual/dual Autoland architecture, while Boeing uses three of them in its Triplex architecture. . Radio altitude has many other uses, of course, including GPWS.
GB
Radar = RAdio Detection And Ranging: The transceiver transmits a signal burst, then listens on the same antenna, much like ATC radar. Radar altitude is computed from delay between transmit and reception of signal. . Smaller civilian and military aircraft typically use radar altimeters.
The more common Radio Altimeter transceiver on larger aircraft transmits a continuous signal through a transmit antenna, and receives on a separate but identical antenna. Radio Altitude is computed from phase difference of modulation on transmitted and received signals.
Radio altimeters provide more reliable altitude data, and are designed primarily as a landing aid, to the point of being Flight Critical sensors during Autolands. Airbus and McDouglas have used dual radio altimeters for dual/dual Autoland architecture, while Boeing uses three of them in its Triplex architecture. . Radio altitude has many other uses, of course, including GPWS.
GB
