*** 20th Anniversary: 2003 to 2023 ***

radar signals

by udhayakumar
(coimbatore,tamilnadu,india)

Radar Signals

Radar Signals

How do you find distant objects in the dark? use Radar, short for radio detection and ranging.


The Radar sends out a wave that bounces off the target and comes back. A built-in signal amplifier allows it to "see" weak signals. It is used in many different places.

Barry's Response - Good description of the equipment, similar to that used for the US national radar weather service, U. This will do.

Weather surveillance radar, as we also know it, locates falling precipitation, and we can loop (animate) it to track the storm's advection (motion across the region.)

Doppler radar is even more fun, originally continuous wave Doppler radar became the standard for meteorology, and now we commonly use the pulse-Doppler radar to detect the location of the precipitation and computes the radial component of its velocity.

Sophisticated software handles the complicated mathematics involved in converting the returned electrical signals into meaningful data. We normally concern ourselves with reflectivity, normally expressed in dBZ. This dimensionless logarithm maps to a precipitation rate, depending on the type of precipitation.

The Position Plan indicator, shows the imprint of the data read from a beam that swept a cone-shaped pattern above the radar station. The further from the station, the higher the elevation of the object reflecting the data. If several of these cones are used and put together with their points aligned, a (approximate) slice can be made across all of them to result in a (nearly) constant altitude position plan indicator, CAPPI for short.

This is one of the most technical areas of meteorology. Search this site for more radar information now.

Comments for radar signals

Average Rating starstarstar

Click here to add your own comments

Rating
starstarstar
Radar signals
by: Anonymous

I did not know that you could find distant objects in t he dark by radar.

Very interesting.

Click here to add your own comments

Join in and write your own page! It's easy to do. How? Simply click here to return to Great Forecasts.


ADD TO OTHER SOCIAL BOOKMARKS: add to Del.icio.usDel.icio.us add to DiggDiggadd to SpurlSpurl


Do you have concerns about air pollution in your area??

Perhaps modelling air pollution will provide the answers to your question.

That is what I do on a full-time basis.  Find out if it is necessary for your project.



Have your Say...

on the StuffintheAir         facebook page


Other topics listed in these guides:

The Stuff in the Air Site Map

And, 

See the newsletter chronicle. 


Thank you to my research and writing assistants, ChatGPT and WordTune, as well as Wombo for the images.