WEBVTT

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chances are likely that many of you have heard the term radar before so many

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movies contain a scene where someone looks over in distress and says Captain

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the ship's radar is picking up an unidentified object headed our Direction

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while examples including aircraft Pilots may be the most readily available to

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some of us the definition of radar actually allots for pretty well any

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device which detects and tracks the speed size or movement of objects all

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Radars operate by using a similar technique of sending pulses of radio

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waves to illuminate potential objects these RAR pulses are either dispersed or

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reflected back by the objects they contact which is then detected by a

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receiver received data is then calculated in one of many complex

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Fashions to determine varying statistics about the detected object it wasn't

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until somewhere around the 1940s during World War II that military science

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figured out how to use the Doppler effect for more accurate detections you

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know the Doppler effect that thing you heard of in

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school anyway before this point in time multiple radar units were necessary for

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calculating an object's speed and travel Direction which was accomplished by

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comparing signal return times at different points over several instances

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then coordinating the data to determine a bogi's trajectory but by also

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measuring the vares in a return signal caused by interaction with the moving

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object Engineers discovered that they were able to determine an object's

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velocity more quickly precisely and with smaller individual units that could

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employ microwaves instead of radio waves

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this eventually led to the Poler based weather systems you may have heard about

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on the local news another cliche movie scene you might have encountered is the

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one where the guy says sir they're jamming our radar signal that's not just

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Hollywood nonsense though radar jamming is done by broadcasting another radar

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signal on the same frequency which overwhelms the enemy's detector it's

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kind of like trying to see fireflies in front of a spotlight radar interference

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can also happen accident when radar systems on the same frequency are

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located too closely together another common problem with radar functionality

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has to do with signal variations or noise which can result from naturally

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existing external conditions like thermal radiation or from internal

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conditions such as a result of the signal amplification process radar can

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also be physically blocked by things like buildings or Hills or mountains or

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even the curvature of the earth which is one reason why planes will sometimes fly

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low to the ground to avoid radar detection even though radar Technologies

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and the problems which plague them are not exactly the newest Kids on the Block

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that doesn't mean they don't have the right stuff our abilities to monitor

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things in increasingly sophisticated ways is constantly leading to

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improvements we can see in our daily lives such as better abilities to track

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live weather and traffic conditions for the purposes of safety and

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transportation and ground penetrating radar systems which provide insight into

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the structure of geological areas or objects for purposes like excavation

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manufacturing or military information collection there is no doubt that

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advancements in radar technology will only continue to to expand our Horizons

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and if you're looking to expand the horizons of your mind then maybe you

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should look into oh can you guess it can you guess what it's going to be uh Ah

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that's right linda.com linda.com is a great source for instructional videos on

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Photoshop and all these other ones that I don't have time to mention all their

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there's always something new to learn and at least in the courses that I've

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taken everything is covered very thoroughly leaving no gaps in your

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linda.com tequ and get a free 10-day trial and see for yourself what they

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have to offer without any risk to you you're welcome so that's it guys thanks

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for watching like or dislike this video If You must uh share comment subscribe

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do all that stuff and we'll see you next time