How GPS Works Today
ฝัง
- เผยแพร่เมื่อ 16 มิ.ย. 2019
- Once upon a time, your ancestors used to look at the night sky to determine their location. Then we used a Thomas Guide, remember those? Today, it only takes one magical technology to get driving directions, send your picnic spot to a lost friend, or track how far you’ve gone during a workout. That technology is called GPS, and you’re about to find out the secret behind it.
Did you know that GPS was actually a military invention? The highest quality signals were only used for military purposes until May 2000, when it became available to all civilians for free. Now GPS is literally everywhere, and you can now even purchase GPS insoles to keep track of your kids or relatives with Alzheimer’s disease.
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TIMESTAMPS:
A brief history of GPS 0:29
How does it work? 1:35
2-D and 3-D trilateration 2:56
Doing the calculations 5:21
And here’s a Bonus 8:05
#GPS #inventions #brightside
Music by Epidemic Sound www.epidemicsound.com/
SUMMARY:
- To put it simply, GPS is a system that has three basic parts: satellites, ground stations, and receivers.
- Grounds stations use radars to find out if the satellites really are where they’re supposed to be.
- The GPS system has 32 active satellites orbiting the Earth. 24 of them are core satellites, and the rest serve as emergency replacements when something happens to the others.
- A receiver on Earth has to see at least 4 satellites to calculate an accurate location because the GPS uses a trilateration mechanism.
- 2-D trilateration is about calculating its latitude and longitude position on a map.
- When it comes to 3-D trilateration, it’s basically the same, but there’ll be spheres instead of circles on your drawing. 3-D position includes your latitude, longitude, and altitude.
- GPS satellites send information about their position and current time to a GPS receiver at certain intervals. The receiver gets the information in the form of a signal.
- GPS satellites have atomic clocks that keep the most precise time, but it would be impossible to install these clocks in every receiver.
- Satellites’ atomic clocks get 38 microseconds ahead of ground clocks every day. If scientists did nothing about it, GPS locations would be off by 6 miles more every day.
- There’s also a GPS almanac in the receiver that keeps track of where this or that satellite should be at any moment.
- GPS not only determines the most accurate location of people and objects, but also sends time signals that are accurate within 10 billionths of a second.
- Even though it’s incredibly accurate and useful, sometimes GPS takes people to unexpected places, especially in rural areas.
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Hey there, BrightSiders, what type of phone do you have?
BRIGHT SIDE I have an iPad mini 5 ;-;
iPhone XS :)
So why does this comment only have 3 likes and 5 comments when this comment is 2 hours ago?
I got LG G6 phone.
The OnePlus 7 Pro😎
TIMESTAMPS:
A brief history of GPS 0:29
How does it work? 1:35
2-D and 3-D trilateration 2:56
Doing the calculations 5:21
And here’s a Bonus 8:05
Can you make a video on what is time and the theory of relativity
Hoooddddf
Wanted to note that there is a difference between GPS and applications that utilise GPS. Assuming the GPS is not faulty, the application does know where you are, but might have problems using the information. If the application directs you to a wrong location or via a wrong way, it's not the fault of the GPS system itself. One example is here in Iceland where travellers input "Laugarvegur" into their application, wanting to go to a destination at "Laugavegur" in Reykjavík. The application directed the travellers to a destination far into the country, and the travellers didn't realise this misspelling until they passed Reykjavík and were also a few hundred kilometers past their desired destination.
Additional nerdy note: GPS is the name of the U.S. navy's system. GNSS (Global Navigation Satellite System) is the general term for those systems. GPS is the everyday term used for such a system since the U.S. was first.
Actually the last couple of examples of picking the wrong routes were not due to GPS, but because of inaccurate/non-updated GIS (Geographic Information System) maps i.e. digital version of maps
Great video bright side! This really helped! Keep it up ❤️👍
U r right
Two things: First Navstar was not the first iteration of gps, a system called transit was then timation followed it then came Navstar. The second thing is it is NOT gps that tells you where to go, gps only tells you where it is when it is and time corrections. A gps receiver then calculates where you are in coordinates then a separate system takes the coordinates and overlays a map on it and runs a pathing algorithm to give directions. Nothing was wrong with gps in the cases where it “miss-lead” people.
"How GPS works explained simply"
- thumbnail looks like the end of the world-
10/10
Oct 10?
Underrated comment.
😆😆😆😆
This made me belly laugh.
Bright side is getting better at science topics and astronomy. I mean it is uploading more science videos. Good Job. Keep uploading more nice science and astronomy videos. 👍👍👍
I can't believe how much things are taken into consideration just to keep the time as accurate as possible.
Thanks for the explanation, it was simple and interesting.
That was a perfect explanation, thankyou
Don't confuse bad mapping software for GPS issues. Misrouting people has nothing to do with GPS. It's all about the mapping software and the quality of the information stored in it.
This was something very interesting about GPS that I never knew.....
Thanks for the knowledge Bright Side
Great explanation... Just love it 💯
Very clear explanation all put in simple words yet in effective means
your explaining is better than my parents or text in google!. thx
Best Explanation 😊❤️ keep posting more vedios
Another awesome video!!!
sir, the bg music irritates , you caan keep their audio low, but the content is the best ever to watch
19 minutes late yay this is a new world record for me LOL😂😂
Tq for making request video, Ur information is very helpful bro 👍
Gui0
I huybjk
thanks a million, i learned a Lot today !!! thx
thus really comprehensible..... thanks
Your voice is cool and relaxing...😍😆😀😄
shining star ya but it’s computer generated
@@_blakep what
GPS doesn't tell anyone to go anywhere, it just informs the application of current position. It's up to the mapping system to create routing information.
You deserve MUCH MUCH more subscribers! Really well explained quality video, keep up the good work
In English it’s MANY MANY more !
bruh they are already at 38 million how many more do they need
@@mikecl07 It was 1 year ago, Mate. They had way less lol.
49m is quite a lot of subscribers man
@Adam Bakalski I meant to say 40.9 millions subscribers is a lot already, which was a reply to original comment that said this channel deserves more subscribers
Wow…I did not know this. Thanks 😍🤩
4:18 the intersection is wrong, the 3 circles were supposed to meet at a single point... You are showing a region which is outside the 3rd circle.
Net TM Thought i was going crazy, don’t know why that bothered me so much
From where we can download the satellite footages , like you drawn the Circles and pointed the signals .. could you please suggest me on that
Excellent video!
I do love your videos! You inspire me so much and now I will definetely try do do something similar to see how it works. Thank you for sharing this amazind idea!
Sir can you please tell that which software or app do you use for editing your videos??
A very helpful nd healthy vedio thnq sir 💫💫💫
tHANKS! you explained it well
Very nice 👍 keep it up 👌
GPS is a brand name of a PNT system (Position, Navigation and Timing); Russia has GLONASS [insert Russian acronym meaning here....) which is used by some nations globally. China has Beidou; again global coverage; with limited users - but you may want to check your smart phone because I bet it tracks Beidou too. The European Union has Galileo with is globe coverage being used by most European nations as well as others. These four systems are also lumped together as GNSSs (Global Navigation Satellite Systems). India and Japan have regional systems; IRNSS and Quasi Zenith respectively. So not all the world navigates (or get lost on Swiss mountaintops) by 'GPS', but they all, more or less, work are described here - Trilateration.
GPS : Aha made simple😉
Atomic clocks and satellite precision : *Am I a joke to you* 😒😏
Good explanation
Great explanation ;)
Wow! Amazing video
I’m not really satisfy with how it works, but I was so satisfy on how it made.
Very useful info
*GPS being available, people still can't find the way and ask directions.*
Thats true!
Well, sometimes it is nicer to talk to people than to stare at the screen all day.
I learnrd so much!
GPS is a system. It’s made up of three parts: satellites, ground stations, and receivers.
Satellites act like the stars in constellations-we know where they are supposed to be at any given time.
The ground stations use radar to make sure they are actually where we think they are.
A receiver, like you might find in your phone or in your car, is persistently listening for a signal from these satellites. The receiver figures out how far away they are from some of them.
Once the receiver calculates its distance from four or more satellites, it knows exactly where you are.
From video we can learn more than from school!!!
Plz explain how Starlink work! Like your explanation ☺️😁
GPS helps me a lot while I’m traveling to places I’m not familiar with
4th satellite resolves the 2-points-of-intersection in 3d trilateration. And it's Bozeman, Montana, with a Z.
President Ronald Reagan allowed the military to make GPS available to the public in 1983, and Bill Clinton in 2000 allowed the military to unscramble the signals to allow the GPS to function at their normal accuracy (something which was only accessible to the military). And that's when garmin started to sell handheld GPS receivers to the consumers for outdoor use/marine/aviation/car navigation.
I didn't know that it can detect altitude wow
Wow....that was interesting .👍
Thanks for explaining...wish I had one!!
Why dont you have one?
I don't know how to use one.
@@BRIGHTSIDEOFFICIAL I have one it's garmin
Hello BrightSide, what programs and tools do you use to produce these nice videos? Thank you!
A OK true
Very informative keep the up your good work 🤗🤗
Can you make the subsucribe in my chanel
@@armylovebts4762 no videos right?
Bright Side I always learn something new from your videos. Thank You!
That's amazing!
Nice video very helpful
Back in the 90's an English program called Time Team used GPS to fix building positions. They said at a site revisit that their measurements were off by several metres because the GPS signal from the satellite was deliberately misaligned. I recall an answer was the Miltary didn't want an exact fix on anything.
ANYWAY. fast forward to the SpaceX boosters trying to land on the droneships and missing, when they can land perfectly OK at the Cape.
Wonder if someone is offsetting the GPS satellite signals ;P
Please make a video of different exercises to fix fingers shivering
Nice vedio about GPS it give a lot of information to the student
thank you!!
Wow nice video thanks for sharing😅😂
4:13 Why choose Boseman Montana when that lays outside the third circle that was drawn? Wouldn't a more accurate location be the area below that where all 3 circles actually intersect? In fact, there is no point where all three circles' lines intersect -- shouldn't there be?
Yeah the graphic is completely wrong
Truly noticed. Wrong concepts discussed in the video. Made a simple concept rather difficult to understand. No one should be learning GPS from this video.
The venn diagram at 4:14 looks a little broken. Boseman does not fall within the circle around Salt Lake City. I might be misunderstanding the graph, but shouldn't the final result be in all three circles?
I too noticed that
GPS is one of the best technologies I have ever seen
This is GREAT!
Thank you Ansari, Mansoor!
If you ever want to go down a rabbit hole of cool tech. Think about submarines. They can't get a god signal below periscope depth. But they can sail around the world (hypothetically) and then surface and they will be within 10 meters of where they think they should be thanks to inertial navigation systems. Something I think is pretty cool but I am a big nerd
I was just reading about how difficult it is to determine height above sea level. Highly amazing. Depends on an accurate description of the shape of the Earth, atmospheric pressure, gravity, winds, tides, etc. Oh yea, check out the calculus formulas involved.
Well you have better chances to survive than trying to find your position in earth having no gps.
Thank you!!!!!
2:08 "When it finds where you are from four or more gps satellites, it can tell exactly where you are."
All my Garmin GPSs never gave me my location until it locked on five, sometimes seven satellites.
I literally googled this question a few hours ago
SHOUT OUT ! THAnKSSSSSSSSSSSSS
Hello and greetings from Boseman, Montana 🙋👋
Hello from Pompano Beach, Fl., Isaac.
Really super bro
GPS is a lifesaver!
I use GPS almost everyday in my life.. I do likes traveling a lot and GPS brought me to a lot of amazing places..
I had a bunch of ‘amazing’ experiences (I don’t think this is bad experiences) using GPS, such crossing a river by my motorcycle, crossing very dark spooky forest in the middle of the night, crossing path way in the middle of rice paddy’s field, and many many more ‘crazy’ experiences that makes my adrenaline pumped. I can’t imagine how’s my life without GPS, maybe I just became a silly introvert kids who trapped in his home.
Thanks God and for smart peoples who invented GPS. I really love it very much 😘
I understand everything that's explained in this video. But, I want to understand the 'electronics' part of it. Like, what is it that is sent to the satellites from the GPS device. How are latitude and longitudes calculated? Can anyone explain it to me in the terms of Hardware? Thanks.
GPS is one way. The receiver "hears" the signals from the satellites. The data contains the satellite id, location, and a time.
From this the receiver can calculate it's distance from each satellite. The point where the distances intersect is the location of the receiver.
GPS and GPS Road navigation are 2 different works. GPS always works, navigation is just a software which sometime fails
Gladys Mae West (née Brown) (born 1930) is an African American mathematician known for her contributions to the mathematical modeling of the shape of the Earth, and her work on the development of the satellite geodesy models that were eventually incorporated into the Global Positioning System (GPS).
hi.i love ur chanel
There can be a high chance of depending upon Military GPS but public GPS is not always accurate. The most accurate GPS is human being. 😊
Hey you! Scrolling through the comments! Hello! ☺️😁
Hi!!!
Hii🙂!!!!
Soooooo...when I lose GPS in a dead section of road while far from any major highway and gain it back when I am near a major highway or civilization...did the satellites stop working?
Your 4g connection is required for Google Maps if you have no map already downloaded.
no, the micro waves from the satellite didn't reach you because of interference
that's the woman with the red dress or the deja vù cat of matrix the film
I wanted to know that 😅
Awesome!
Technology is great when it works...
Just like some people brains.
Yes I am more than pisst I think there are people stilling my information I even don't feel like using internet anymore and Google is turning in to a huge problem
You are right
The intersection of the circles was not relected right, but all the other is cool
golden words "Technology is Great when it Works"
Thank you.
thanks a lot
Mr bright side, greeting! ! your sign change from yellow to brown any reason why ?like the GPS story keep smiling with lol politely
It was great.
O e time over a year ago, my girlfriend and I took a taxi down in Valle de Bravo valley area to a school were my daughter was going to participate in an event.
We drove according to the GPS map and sure it was going to take us there, but when I mention the school and he right away stopped the car and turn back to town and said that this road was not going to be the best cause it would take us over an hour.
So he return to town and took another road to the school that it only took 15 minutes.
Well in countries like countries of south Asia people generally doesn't relay on GPS they generally don't go to places whose address or location they don't know. if they really want to know some location they will not search it on Google map
You can't get a 3-D fix on a GPS receiver. GPS fixes are always either 2-D or 4-D. The fourth dimension, of course, is time.
HIII LOVE UR VIDs
And my vids?
@@tatasbeautycorner7363 uhhhhh yeaaaa.... sureeee
Great video. Maybe be a little more precise about GPS and stories. Those stories of bad directions provided by a mapping provider and not GPS. GPS consists of the three segments (space, ground and receiver) mentioned earlier and not navigation.
the flat earthers are quaking lol
GPS/GNSS and navigation software are not the same. the examples of people getting lost after 08:00 in the video are misleading -- it seems GPS was working as intended but the apps that the people used (like Google Maps, Waze etc) to navigate were "faulty".
Am from Africa zambia watching every video from bright side thanks for your video's
Do you use GPS?
Alot am using samsung S6edge
GPS tells me 400 more feet as I'm driving into the turn.