chances are likely that many of you have heard the term radar before so many
movies contain a scene where someone looks over in distress and says Captain
the ship's radar is picking up an unidentified object headed our Direction
while examples including aircraft Pilots may be the most readily available to
some of us the definition of radar actually allots for pretty well any
device which detects and tracks the speed size or movement of objects all
Radars operate by using a similar technique of sending pulses of radio
waves to illuminate potential objects these RAR pulses are either dispersed or
reflected back by the objects they contact which is then detected by a
receiver received data is then calculated in one of many complex
Fashions to determine varying statistics about the detected object it wasn't
until somewhere around the 1940s during World War II that military science
figured out how to use the Doppler effect for more accurate detections you
know the Doppler effect that thing you heard of in
school anyway before this point in time multiple radar units were necessary for
calculating an object's speed and travel Direction which was accomplished by
comparing signal return times at different points over several instances
then coordinating the data to determine a bogi's trajectory but by also
measuring the vares in a return signal caused by interaction with the moving
object Engineers discovered that they were able to determine an object's
velocity more quickly precisely and with smaller individual units that could
employ microwaves instead of radio waves
this eventually led to the Poler based weather systems you may have heard about
on the local news another cliche movie scene you might have encountered is the
one where the guy says sir they're jamming our radar signal that's not just
Hollywood nonsense though radar jamming is done by broadcasting another radar
signal on the same frequency which overwhelms the enemy's detector it's
kind of like trying to see fireflies in front of a spotlight radar interference
can also happen accident when radar systems on the same frequency are
located too closely together another common problem with radar functionality
has to do with signal variations or noise which can result from naturally
existing external conditions like thermal radiation or from internal
conditions such as a result of the signal amplification process radar can
also be physically blocked by things like buildings or Hills or mountains or
even the curvature of the earth which is one reason why planes will sometimes fly
low to the ground to avoid radar detection even though radar Technologies
and the problems which plague them are not exactly the newest Kids on the Block
that doesn't mean they don't have the right stuff our abilities to monitor
things in increasingly sophisticated ways is constantly leading to
improvements we can see in our daily lives such as better abilities to track
live weather and traffic conditions for the purposes of safety and
transportation and ground penetrating radar systems which provide insight into
the structure of geological areas or objects for purposes like excavation
manufacturing or military information collection there is no doubt that
advancements in radar technology will only continue to to expand our Horizons
and if you're looking to expand the horizons of your mind then maybe you
should look into oh can you guess it can you guess what it's going to be uh Ah
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for watching like or dislike this video If You must uh share comment subscribe
do all that stuff and we'll see you next time