Hey guys! Has been a while. Here's a new video looking at how GPS works. I'll also be putting a new video up hopefully in the next 48 hours or so, so look out for that! If you have found this video useful and want to support the channel, we now (as of Jan 2022) have a Buy Me A Coffee Page! www.buymeacoffee.com/scibright
@gspoz4322
8 жыл бұрын
neat!
@misterfyer9747
8 жыл бұрын
Whats the next video about?
@sciBRIGHT
7 жыл бұрын
It was going to be Clinton v Trump but I have uni exams so haven't had time. I'm hoping to put up a new video next week though :)
@russianfederation5935
7 жыл бұрын
Was searching on gps and found this video, channel seems very good. Keep it up
@ashboon1625
7 жыл бұрын
You've forgotten to include the French and Japanese systems. Your phone in the video includes QZSS(the Japanese system).
@sashayakubov6924
3 жыл бұрын
As opposed to other videos, this one explains everything I needed to know on the topic, in particular “how does it detect the position if my phone doesn’t send the signal”. Also, I loved the drawings that explain why we need 4 satellites (I thought 3 is enough, but with 3 you have 2 possible locations) thank you!
@erdbeerenrex
2 жыл бұрын
Yup. I've searched on google prior on how GPS works but this is the first time I've come across someone showing real-world figures in the computations. Three satellites are to determine your position, the fourth one is to mitigate for the time offset as show in this video 4:35 kzitem.info/news/bejne/mZuK0n1ncpFmapw
@btafan11
Жыл бұрын
Satellite 1 is drawn too large, I think only 3 is needed but he said the fourth is to correct for time dilation or something
@rozalinabitzoidou8835
7 жыл бұрын
I have to say that out of all the videos I watched about GPS this one was by far the best and the most informative. Great job and thank you, you saved my essay!
@sciBRIGHT
7 жыл бұрын
Thank you very much! :-)
@SasukeUchiha-ee5ic
5 жыл бұрын
i would second that.
@pedrojello8983
3 жыл бұрын
how when satellites don't exist? this video is a big lie.
@saadmanomar7754
Жыл бұрын
@@pedrojello8983 ah yes, of course
@user-gy3yf9hy6h
Жыл бұрын
@@pedrojello8983 Ahh yes, then I wonder what GPS is controlled by.
@purdysanchez
5 жыл бұрын
This is by far the most accurate short format explanation I have seen on the subject.
@mmx555
7 жыл бұрын
perfect explanation. thanks man.
@sciBRIGHT
7 жыл бұрын
Thanks! :-)
@amandachambers5157
7 жыл бұрын
sciBRIGHT one question is space a vacuum
@aypleckduminecraft
2 жыл бұрын
Thanks for this great insight ! But this leaves me with two questions : 1. How do satellites know their exact position relative to earth and 2. How does your phone calculate the time it took for the signal to travel without knowing the current time with the precision of an atomic clock ?
@maxdonaldson861
2 жыл бұрын
I believe one of the satellites is used to compute the difference between the receiver's clock's time and satellite time.
@roshanantony7467
2 жыл бұрын
1. How do satellites know their exact position relative to earth? ans: these are geo stationary satellites and are ALWAYS at one particular point above the earth, 24/7/365.
@karhukivi
2 жыл бұрын
@@roshanantony7467 They are tracked from Earth. They are not geostationary.
@_clemens_
Жыл бұрын
- Each sat has an identifier. The orbits are known on beforehand. As the sats tend to drift a little, location measurements are done on earth, send to the sats and they also send the deviation next to the time stamp. Your gps device has LUTs (+math) to know which sat is where at which moment. - This is where the video simplifies a bit too much: you don't calculate the diff between current time and the time the message was sent. You know that all sats send the message at the very same atomic clock precision moment. You receive them however with some time delta. It is this time delta which is used in the equations (with also some correction for special and general relativity). Solving the equations gives you then x,y,z and t.
@aypleckduminecraft
Жыл бұрын
@@_clemens_ Thank you!
@moha3855
7 жыл бұрын
This was a really useful video. I've actually talked to friends before about GPS's and no one seems to really understand why they work, so this really helped to clear it up!
@nonaeldaly2204
10 ай бұрын
Hi, im actually an IB student curretly doing one of my research papers on the use of mathematics and physics in navigation . Though I don't actually take physics so i am a little bit confused . Your explanation is very clear , it is just that i don't really know where the numbers in the relativity and the general relativity equations came from :( if you actually do see this by some miracle , please help 😭
@bernd9000
7 жыл бұрын
googling for an explanatory video should lead you to this one first, not that terrible screaming wannabe-entertainer. thx fpr the solid info!
@sciBRIGHT
7 жыл бұрын
Thank you very much! :)
@100notatroll2
7 жыл бұрын
I saw this one first
@rosensofroniev1264
7 жыл бұрын
Not really. There are a lot of misconceptions and false statements he made in this video, despite the very purpose of the video being to clear those up. Shouldn't blame him too much as most of the information on the internet is actually wrong and so were his sources I suppose. I see the comment is 5 months old but if you are still interested I could further elaborate on that. p.s. even documentaries often give inaccurate and false information on this topic
@josevicentegustilo111gusti9
7 жыл бұрын
sciBRIGHT
@williambarcume8854
6 жыл бұрын
sciBRIGHT
@jimkeller3868
6 жыл бұрын
After having gone to Wikipedia and found a totally non-useful, non-user friendly explanation (as usual), I came here and the fog lifted. Thanks
@sciBRIGHT
6 жыл бұрын
No worries, thanks for watching!
@HasanZobaer
6 жыл бұрын
You deserve MUCH MUCH more subscribers! Really well explained quality video, keep up the good work
@renanmelo4903
6 жыл бұрын
sciBRIGHT! Awesome video! I'm searching videos about GPS at KZitem and your`s is very good. Thanks! There are 2 points that i'd like to comment: 1) When you said that sattelites' clock goes faster than clocks at the Earth, you wrote "slower". It got a little difficult to understand. 2) To calculate the distance we do d=v*t. But, if the sattelites are moving (since they're not geostationary), the speed of light should depend on the sattelite's velocity (classical mechanics). Therefore, when we use d=v*t regardless of sattelite's movement, we're already using Relativity :) Thanks!
@renanmelo4903
6 жыл бұрын
About comment #2) If we take satellite's speed into account using classical mechanics the error will be under 30 cm in 1ns interval. Then, to calculate distances, it's effect will be very small. Therefore, Relativity will not be evident by distance measurements. It will appear only in time registry of satellites's clocks or other effects (interference, etc)
@termine9746
6 жыл бұрын
désolé pour l'anglais ... Regardez ça et dites moi ce que vous en pensez ... Je suis sûr que vous trouverez une vidéo comme celle-ci dans votre langue! Actuellement, 99,8% du trafic Internet intercontinental passe par 366 câbles sous-marins, plus d'un million de kilomètres de câbles à fibre optique parsèment le fond océanique. Une fois à la surface, ils sont attachés aux stations d'atterrissage. Regardez la vidéo ORANGE / MARINE OFFICIAL LINK ici! www.universfreebox.com/article/37831/Le-saviez-vous-99-8-du-trafic-internet-intercontinental-transite-via-366-cables-sous-marins Les satellites n'existent pas!
@fireskycam9889
6 жыл бұрын
Very well done. You explain it so simply. Although you show the long mathematical equations it is easy to understand that we don't need to understand them fully, just grasp the theory behind it.
@sciBRIGHT
6 жыл бұрын
Thank you! :-)
@saturnx311
3 жыл бұрын
I think this is the best video on GPS! Short but extremely informative. Trilateration.
@engchoontan8483
Жыл бұрын
It works by skewing time from multiple antennae to targetted coordinates. Confused time reception
@AERIALPHOTO123
3 жыл бұрын
Excellent excellent excellent description of how GPS works. And you talked so fast that nobody got bored
@mangmaia
7 жыл бұрын
this is a masterwork of art ._ .
@petermccreesh6133
4 жыл бұрын
I before E except after C, receiver. Come on guys! Great topic though, thanks.
@loriosterweil982
3 жыл бұрын
Glad you noticed that too.
@anirudhnair558
Күн бұрын
This is an AMAZIGN video! Thank you!!!!
@theintelarif
6 жыл бұрын
You busted some GPS myths. And thanks for the excellent technical explanation.
@sciBRIGHT
6 жыл бұрын
Thanks for watching!
@prudvi01
4 жыл бұрын
I'm watching this video to prepare for my finals and has helped me a lot!!
@pasadena805
3 жыл бұрын
Did you pass?
@mariposarosa8932
4 жыл бұрын
Thnx a lot i finally understood wht happens with GPS tomorrow inchallah i ll do my test exam in confort !! Wish me luck 😉
@justicejordan1636
4 жыл бұрын
All this "Science" then a random self-proclaimed scientist will say the Earth is FLAT.
@abbadubenzwin5157
3 ай бұрын
I think that the Earth is flat in relation to the natural place where humans live and not in relation to satellites
@stevieboy2009
5 жыл бұрын
Interesting fact? I interview intermittently throughout the year to keep relevant and Keep interview skills up to speed. I took an interview for a multimillion dollar intonational company that was looking for a global network lead specialising in managing transatlantic cabling projects ... one of my interview questions was: Do you think satellites exist? I said yes and the gentleman smiled/chuckled and said no, and continued my interview. At the end I went back to that same question and asked him to elaborate. He said if I honestly think satellites are transmitting data across the earth then I am not the right person for this job.
@Fais-pas-le-fou467
5 жыл бұрын
The One so have you found more info about this ?
@MrSarcasm101
5 жыл бұрын
GPS = LORAN google it
@prathameshsawant5574
7 жыл бұрын
make satellite faster to cancel out gravitational effect, or calculate the propagation delay cause by ionosphere and use it to make accurate time syncronization.
@mrifixplanes1813
7 жыл бұрын
If I remember correctly the ionospheric error is calculated. The satellite's data is sent on the two different (now 3) frequencies at the same time. As the amount of refraction and diffraction by the ionosphere are both affected by the frequency, the amount can be calculated by comparing the 2/3 different signals. from www.e-education.psu.edu/geog862/node/1715 Another consequence of the dispersive nature of the ionosphere is that the apparent time delay for a higher frequency carrier wave is less than it is for a lower frequency wave. That means that L1, 1575.42 MHz, is not affected as much as L2, 1227.60 MHz, and L2 is not affected as much as L5, 1176.45MHz This fact provides one of the greatest advantages of a dual-frequency receiver over the single-frequency receivers. The separations between the L1 and L2 frequencies (347.82 MHz), the L1 and L5 frequencies (398.97 MHz) and even the L2 and L5 frequencies (51.15 MHz) are large enough to facilitate estimation of the ionospheric group delay. Therefore, by tracking all the carriers, a multiple-frequency receiver can model and remove, not all, but a significant portion of the ionospheric bias. There are now several possible combinations, L1/L2, L1/L5 and L2/L5. It is even possible to have a triple frequency combination to help ameliorate this bias.
@quelorepario
4 жыл бұрын
@@mrifixplanes1813 "Are both effected" *x* --> "Are both _affected_ " ✓
@MollyMcGarvey
4 жыл бұрын
Awesome animation/drawings!
@dontennakoon9793
4 жыл бұрын
Very well explained. You know what you are talking about. Well done mate.
@StephenDix
6 жыл бұрын
Clever. Make a video I have to watch 8 times.
@kevinchahine7553
6 жыл бұрын
Finally a decent explanation
@deagantrembley7995
3 жыл бұрын
Mind. Blown.Literally.
@ikennao5299
7 жыл бұрын
hi from Nigeria ! always wondered how GPS worked
@martinpauly
6 жыл бұрын
Great overview, and nicely presented. Thanks for making this video!
@zayyanumuhammad356
4 жыл бұрын
Very helpful... Thanks a lot
@micharogalewicz6249
7 жыл бұрын
very nicely explained, indeed.
@MiladEkramnia
2 жыл бұрын
So precise and consice, wonderful!
@sciBRIGHT
2 жыл бұрын
Thank you!
@clangoperator6526
8 жыл бұрын
needs more views! great video, a shame this channel is so small!
@sciBRIGHT
8 жыл бұрын
Thank you very much!
@kundalini3389
7 жыл бұрын
Video is quite popular now
@3sixty52
8 жыл бұрын
I could be wrong, but I thought it was possible with 3?
@gspoz4322
8 жыл бұрын
I think the 2d version of trilateration lets you, but I guess the 3d version doesn't?
@achondrite8466
8 жыл бұрын
4th is for the clock error
@kundalini3389
8 жыл бұрын
I think you can actually do it with 3. I think ships use three as they know they will always be at sea level so can ignore the higher allitude reading.
@moha3855
7 жыл бұрын
One of my friends was saying just a few days ago that you could do it with just 2 haha
@nickwaller3823
7 жыл бұрын
It is possible for only 3, what happens is when the sphere intercept, it leaves two positions, often one spot will just not make sense such as in space or in the earth, therefore the satellites can calculate it through three, however sometimes both areas will be viable and therefore a fourth satellite will come into play.
@steveross8326
5 жыл бұрын
Nice n' concise vid......excellent!
@ssstufoisflat8399
6 жыл бұрын
i have question please answer. im curious. why smartphone with gps module doesnt need big antena dish. why 1 fiber wire antena can do the job. thank you.
@paganphil100
Жыл бұрын
Ssst Ufo Is Flat: The size of antenna required (for any radio transmission) is determined by the wavelength / frequency used. Satellites use UHF (Ultra High Frequency) so only a very small antenna is needed.
@kovanovsky2233
7 жыл бұрын
I'm really confused as to relativity role in GPS technology. Our handheld receivers certainly don't have an atomic clock to know precise time difference. So after a bit of "research", I kind of convinced that the receiver actually uses time received by the fourth satellite to cancel out the time error given by our not-so-precise clock in our devices. Now then it means that the satellites don't need to account for the time difference between time on the satellite and time on the earth, which translate to the relativistic effects cancels out too? I'm confused. If the system still uses our devices' clocks, then how are measurements still so accurate. I don't think our devices communicate with Observatory's atomic clock via internet because GPS system still works without internet connection.. Please help.
@kovanovsky2233
7 жыл бұрын
Never mind, I found the answer here by mrspeedybob www.physicsforums.com/threads/how-does-gps-receiver-calculate-time-delay.742318/ I don't know if that's really the case, but it's really reasonable. He said that if the clock on our handheld device is perfectly synchronized with the satellites, we'd only need 3 satellites to pin point our position. But since we don't have such receiver, we need the fourth satellite. The fourth satellite's signal is first used to calculate distance to our devices by comparing the time difference in 4th sat's time and our device's clock. As expected the result will disagree with the last 3 result. Then the data is used to do the problem backwards and adjust the receiver's clock so that all of the results agree with each other. And from that, now I can really see why relativistic effects do need to be taken into account since the GPS still uses the receiver's clock.
6 жыл бұрын
Check this to understand it does not eventually... www.alternativephysics.org/book/GPSmythology.htm
@SasukeUchiha-ee5ic
5 жыл бұрын
@@kovanovsky2233 that was very helpful thanks:)
@slowburn678
5 жыл бұрын
@ That helped. Thanks
@_clemens_
Жыл бұрын
The clue is that measuring the time of a message happens indirect. You use the fact that all sats fire at exact the same moment with atomic clock precision. All sat messages will however reach you with some delta in between. This deltas will depend on your position. Because you use deltas, internal constant hw/sw delays which might be diffferent for different hw also don't matter, as long as they are constant for the specific device you are using.
@ndon85
7 жыл бұрын
so, according to this video, the time gap between a GPS receiver and the satellite clock is measured. But what if I change the time on my phone? Wouldn't that mess up with the all calculation? I do not see it happening...
@MrigankMongia
7 жыл бұрын
Great question. I did some research found couple of neat sources. Turns out the 4th satellite's timestamp also helps calculate the phone's time error, along with pseudo random code. I didn't went through it thoroughly yet. Looks interesting, will read it tomorrow. www.trimble.com/gps_tutorial/howgps-timing.aspx kzitem.info/news/bejne/0Yenu2GGhpiBp2k
@IMEniac
5 жыл бұрын
what is the app name that u were using in mobile , really AWESOME explanation
@fatihcals1142
7 жыл бұрын
A Great video! Thanks man.
@sciBRIGHT
7 жыл бұрын
Fatih Çalış Thanks heaps!
@snapeyvape5754
7 жыл бұрын
This is a really good quality channel!
@fahmylina123
7 жыл бұрын
Excellent presentation. Thank you.
@sciBRIGHT
7 жыл бұрын
Thank you very much!
@nbysby
3 жыл бұрын
0:24 - phone and GPS satelite DOES NOT talk to each other, satelite only sends signal, they don't recive any signal from our devices
@sciBRIGHT
2 жыл бұрын
The script/subtitles say that this is a common misconception, not how it works :)
@orrdry8900
8 жыл бұрын
Audio sounds really good on this video, nice job scibright
@sciBRIGHT
8 жыл бұрын
Thanks! Exact same setup, just more post-recording editing
@RHi-xk7nt
4 ай бұрын
They drive around the streets with cameras, they fly across the globe with cameras. But than tell us gps are satellite mapping. As someone who uses gps constantly for work, I cant count the dirt piles I was led too, that ended up being 6 year old full lot service centres.. Strange that satellites mapping the globe, is half a decade behind… Sounds more like the plane mapping system than satellites.
@david_akerman
4 жыл бұрын
Gotta laugh at the nutcases and trolls claiming that GPS doesn't use satellites. None of them would have the faintest clue how to determine how GPS works.
@jodiecorbett2134
3 жыл бұрын
Googling for homework thanks man
@sciBRIGHT
3 жыл бұрын
Happy to help!
@Tanoaproductionsfiji
2 ай бұрын
Great Video!! Super helpful!! Thank you!
@kavindrachetna
7 жыл бұрын
Terrific educational stuff on GPS.. Thanks
@tiger7892
6 жыл бұрын
Awesome video and great explanation! although I mainly came to the comments to see if there were flat earthers saying satellites aren't real lmao
@termine9746
6 жыл бұрын
désolé pour l'anglais ... Regardez ça et dites moi ce que vous en pensez ... Je suis sûr que vous trouverez une vidéo comme celle-ci dans votre langue! Actuellement, 99,8% du trafic Internet intercontinental passe par 366 câbles sous-marins, plus d'un million de kilomètres de câbles à fibre optique parsèment le fond océanique. Une fois à la surface, ils sont attachés aux stations d'atterrissage. Regardez la vidéo ORANGE / MARINE OFFICIAL LINK ici! www.universfreebox.com/article/37831/Le-saviez-vous-99-8-du-trafic-internet-intercontinental-transite-via-366-cables-sous-marins Les satellites n'existent pas!
@Ayoub-adventures
4 жыл бұрын
Good collection of information. However...guys...you will never be smarter by watching youtube videos. You don't have the moment to the "why" of the first information until new information arrives that you need to follow..
@troo_story
8 ай бұрын
1:31 "Reciever"🙄 Undermines his overall intelllect.
@357CLOUDY
5 жыл бұрын
Can the satellites that stay stationary be manipulated say to change time time on computers being used? Thanks for the equations don't know if it's correct but I appreciate the work done.
@itsmeprad
4 жыл бұрын
Brilliant video! This deserves instant subscribe!
@indianetizen
6 жыл бұрын
That class was dope
@vamikashrivastava3319
6 жыл бұрын
Thank you . Your video helped me in understanding gps
@danioan8182
5 жыл бұрын
Pretty bad Google say on it’s channel that gps is using towers (from earth) and not any sattelite.
@babaduke3298
4 жыл бұрын
Yeah well, at least google it honest about something. Channels like these are busy trying to get certified by YT and endorsed by NASA. 😅
@euva209
2 жыл бұрын
In the special relativity calculations you are not revealing the actual frequency needed to arrive at an error of -8.34 ×10^-11. Otherwise an excellent video!
@sbkarajan
2 жыл бұрын
If you put cm level accurate GPS receivers, 2 cm apart.... Do GPS really tell they are 2 cm apart?
@paganphil100
Жыл бұрын
Nibiru12: Yes....but they will cost you thousands of £ / $ etc. for one with that much accuracy.....they are used by surveyors and archaeologists.
@naoufaltakroumt6373
6 жыл бұрын
I think the speed difference between the speaking and the listening in this video, relativity applies as well :D
@NegraluaLuanegra
5 жыл бұрын
wow, some solid info here! S2
@marcofacin4017
3 жыл бұрын
grazie
@billniko9310
5 жыл бұрын
I still don’t get how the gps work. I need to see over over again.
@brigsgolfin
4 жыл бұрын
Exactly what I was looking for, thank you!
@craigr7262
5 жыл бұрын
It says I lost GPS coordinates all the time
@realdvgarg
4 жыл бұрын
The role of the fourth satellite isn't even mentioned
@BobbieGWhiz
2 жыл бұрын
How does your gps know it’s exact time so it can determine the time delay from the satellite? Thanks.
@tgstudio85
2 жыл бұрын
It doesn't have to know it perfectly, actual time is send via GPS satellite signal.
@BobbieGWhiz
2 жыл бұрын
@@tgstudio85 I wish you would explain more fully.
@immediatereviews6363
6 жыл бұрын
Very cool explanation. But a 15 meter error seems like a lot when you are driving in a strange area!
@paganphil100
Жыл бұрын
Immediate Reviews: Modern GPS units are accurate to about 5 or 6 feet (1 - 2 metres)......those used by surveyors and archaeologists are accurate to 1 cm (1/2 inch) but they are VERY expensive and large.
@bushcraft912
6 ай бұрын
Something no-one has raised: Can they identify your device and therefore track you?
@sissyfus6181
6 ай бұрын
A GPS receiver only receives signals, it does NOT transmit anything. You cannot be tracked using a GPS receiver. But an unscrupulous mapping app on your phone certainly could.
@TylerLatsha
2 жыл бұрын
Awesome video-thank you!
@sciBRIGHT
2 жыл бұрын
Glad you liked it!
@dankimjong6854
7 жыл бұрын
but.. earth.. is raptor-shaped tho
@BMG-sw4uv
7 жыл бұрын
Wonder if between phones there's much of a difference in gps chips or if they all have the same GPS chips
@MohammadFarhan-mo6mo
Жыл бұрын
Man you did it great! ❤
@Nedialkata1
7 жыл бұрын
great work man :-)
@sciBRIGHT
7 жыл бұрын
+Nedko Kostadinov Thank you very much 😊
@Underheaven8
7 жыл бұрын
Knowing your position between 4 or even 24 satellites does not help placing you on a specific defined grid on earth. You need a specific grid of coordinates to pinpoint your location on earth, which is only achieved by triangulating your signal between signal posts scattered all over the globe which define a predetermined grid. The WGS84 system uses a network of hundreds of signal posts which your signal is bounced to in order to locate your position on the grid, and GPS is based on this WSG84 grid. The exact specifics of the WGS84 grid is exclusively for the Department of Defense (DoD), as is the entire GPS system.
@Underheaven8
6 жыл бұрын
Those "signal posts" that make up the grid are also used to measure tectonic plate movement. So it's possible I guess that the prime meridian moves as those posts move due to tectonic movement.
@Underheaven8
6 жыл бұрын
You can have a shift through different geodetic datums also yeah. If you use Japanese ones for instance when calling artillery strikes, and the artillery uses the American WSG84, the strike will land quite a bit away from where you intended it to. But WSG84 has been around since the 80's, and it hasn't been changed I think in its core. Longitude is just a definition though, it doesn't rely on physical observation like latitude when viewing the pole star. Can't remember by how far it has moved from Greenwich observatory, maybe 100 meters or so, not sure if tectonic plate movement can account for all that, but there's nothing stopping you from redefining zero meridian to right on top of Greenwich observatory again and call it the new updated geodetic datum of WSG84.
@miguelvasquez9764
7 жыл бұрын
Great ¡ Please show more videos like this. Greetings
@sciBRIGHT
7 жыл бұрын
Thank you very much! :-)
@172udaynift
4 жыл бұрын
Wonderfully Explained. Thank you so much.
@rbmnewton
5 жыл бұрын
Awsome.... Speachless... Thanks for the explanation
@ruochenwang7841
7 жыл бұрын
A 38 microseconds delay means that the clock on board the satellite is slower or faster than the clock on earth?
@thevideoguy90
Жыл бұрын
Why are there no photos of gps satellites in space?
@MrZetor
Жыл бұрын
@The Video Guy Because the satellites are expensive, and people who own them don't want guys like you to be able to just go 20kkm up, recognize a satellite by a photo, and steal it! Interesting question, actually. Stock image sites like istockphoto _do_ have tons of pictures of satellites in orbit, but they look CGI to me. I reckon taking photos when new GPS satellites are launched isn't exactly a top priority, not that there even is much gear that reaches the orbit except the satellite (that probably doesn't have a selfie stick) itself. If you meant why there are no photos taken by amateur astronomers (on Earth), tracking GPS satellites, which move _very_ fast (except the geosynchronous units at 36km, obviously) compared to celestial bodies, would require a fairly decent automatic tracking rig _and_ a scope with a decent zoom. And even with these, the photos (taken through the atmosphere) would most likely look rather unimpressive. Boring even, when compared to other stuff you could look at with said gear. Having said that, LEO gear like Starlink 'trains' crossing paths _does_ look quite nice, but that is at 550km. Kurzgesagt: 1) There's nobody/nothing in space to take pictures, 2) everyone knows where the satellites are and what they look like (they were once on Earth after all), and 3) the satellites move fast and photos from Earth would look crappy.
@sciencevilla3091
4 жыл бұрын
How you make and edit your videos. Can you please tell me ?
@illanatiilly3768
5 жыл бұрын
So if there a clock error will my drone flyaway
@memejeff
5 жыл бұрын
it could
7 жыл бұрын
You are genius!
@sciBRIGHT
7 жыл бұрын
Thanks for watching :)
@rakesh_antaru
5 жыл бұрын
Thanks a lot brother
@mirsahibsharifov7779
6 жыл бұрын
Thanks you best explained
@newdesigns3642
3 жыл бұрын
Chinese GNSS is Global now, not just regional
@dralpha9681
3 жыл бұрын
i mean this video is from 4 years ago
@Detownrebel1
4 жыл бұрын
I though cell phones are triangulated by the towers using RF, the towers have GPS nodes for required timing.
@MrigankMongia
7 жыл бұрын
Thank you! Awesome work!
@peace2u4eva59
7 жыл бұрын
Thank you so much! This was incredibly helpful :).
@jugosever
3 жыл бұрын
Are you sure there is no a two way communication between GPS receivers and satellites? Synchronization between GPS devices and satellites needs to be down to the nanosecond . How can such a synchronization be achieved if there is no a two way communication between GPS devices and satellites?
@tgstudio85
3 жыл бұрын
It's one way communication, but now days practically all phones use A-GPS(Aided GPS) which use ground GSM network to download positions of all satellites and to synchronize your phone clock.
@aneikei
3 жыл бұрын
Wouldn't the GPS clocks be faster by 38.6 microseconds/day and not slower?
@darkvoid3153
3 жыл бұрын
am i the only 9 year old watching this for fun
@nanyabussinussspeltwrong
19 күн бұрын
Nope.
@terraplanistaopenmind5171
5 жыл бұрын
By antennas very simple
@babaduke3298
4 жыл бұрын
These people don't get it. NASA owns them.
@SaurabhKumar-ob7bc
5 жыл бұрын
Very good
@1goblingreen404
6 жыл бұрын
Is there any difference between the GPS receiver in my phone and my standalone GPS receiver? Example, if I download maps to the North Pole on my phone for offline use, and I have my Android/Apple cellphone with me and it has a clear view of the sky, would it work the same as any standalone GPS device? Thanks for answering my awesome, thought-provoking question!
@ShadowriverUB
6 жыл бұрын
That depends on class of the receiver in your phone, the difference is in locking process, in past phones had cheaper AGPS which could not lock satellite positions independsly without extra information from internet, even now phone software helps it self with internet data to speed you locking process which can take minutes without it. Phones also use different sources of location data starting with IP address geolocation (precision here depends on design of ISP network that you connected to and address methodology), phone base station triangulation, there also WiFi location databases which allows Wifi base triangulation, good example of that is first iPhone and various iPod touch models which didn't have GPS yet used wifi databases to track the location.
@AbhishekSharma-pi8jh
7 жыл бұрын
the video indeed is very well explained....but the speed of explanation can be reduced...
@razvanm2217
2 жыл бұрын
How does receiver know when satellite signal is sent ?
Пікірлер: 705