0
Why do radio altimeter have 2 antennas where as weather radar have 1?
Wiki User
∙ 13y ago
- A RADAR altimeter must have 2 antennas (one transmit, one receive) so that it can operate continuously making altitude measurements by matching modulation and carrier phase of received signal with transmitted signal.
- A weather RADAR needs only 1 antenna because it operates in a pulsed multiplex mode: the antenna is used as a transmitter antenna to send a short pulse of carrier, then is used as a receiver until the last possible reflection from the furthest distance could return. During this time the antenna has rotated only a tiny amount. The transmit/receive multiplex cycle continues as the antenna rotates 360 degrees.
- A targeting RADAR operates much like the weather radar but it sweeps back and forth over a limited angle instead of in a full 360 degree circle. (e.g. 120 degrees, 90 degrees, 60 degrees, 45 degrees)
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
What advanced weather data measurement tool that sends out radio waves is called?
radar
An advanced weather data measurement tool that sends out radio waves is called an?
radar
What instrument uses radio waves to detect distant objects or precipitation and measure its distance?
RadarRadar
What is a palindrome that is a synonym for electronic equipment that transmits radio waves?
RADAR (RAdio Detection And Ranging)
Radio detection and raging is known by what acronym?
radar radar
What is the difference between working principal of a radio altimeter and radar altimeter?
They are one in the same. They use radio waves for RAdio Detection and RAnging. Radar is an acrynom, why they flip flopped the R and the A in ranging is beyond me.They're both the same thing
What advanced weather data measurement tool that sends out radio waves?
radar
What is advanced weather data measurement tool that sends out radio waves?
radar
What is an advanced weather data measurement tool that sends out radio waves?
radar
What is the difference between a radar altimeter and a barometric altimeter?
Radar altimeter gets altitude information by bouncing a radio wave off the surface of the Earth and determines the aircrafts altitude by measuring the length of time it takes for the signal to return. Barometric altimeters get altitude information by measuring the barometric air pressure outside the aircraft. Barometric pressure decreases as altitude increases. Radar altimeters will give altitude above ground level while barometric altimeters give altitude above sea level.
An advanced weather data measurement tool that sends out radio waves is called an?
radar
What advanced weather data measurement tool that sends out radio waves is called?
radar
What does altimeter mean?
Altimeter indicates altitude of air craft from ground. they are known as radio altimeters.
Will a radio altimeter underread in a clean confrigation?
YES. radio altimeter is programmed to read accurate with landing gear down i.e. height of the tyres above the ground. Therefore if the configuration is clean the altimeter will underread.
Who is the inventor of radio altimeter?
The radio altimeter was invented by American engineer, Lloyd Espenshied. This was invented in 1924, and was demonstrated by Bell Labs in New York.Ê
What weather instrument uses radio waves to detect wind or rain or snow?
Doppler radar
An example of an indirect weather observation system is?
An example of an indirect weather observation system is a weather radar. Radar uses radio waves to detect precipitation, such as rain, snow, or hail, in the atmosphere. By measuring the intensity and movement of these precipitation particles, meteorologists can infer information about the weather conditions in a specific area.
