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!:ok:

General Aviation unit $8000

https://commerce.honeywell.com/webap...4&psysId=item1

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