[Zene] how gps worksteration explained have you ever wondered how does the global positioning system work i guess you did if watching this video gps uses a method called trateration it seems to be widely confused with triangulation but triangulation requires measuring angles while trilated meing distancesi two dimensional visualization let's say we have transmitters a b and c they form a triangle however they will be able to locate an object not only inside of the triangle but anywhere in their range so let's start by measuring the distance to the satellite a i'll illustrate the measured distance with
a circle not to you the because it will eas to how gps canm a to the radi of circle this means that our gpser is located somewhere on it but we need more information to be sure exactly where right now it can be almost anywhere let's now measure distance to the transmitter b vcree positioning prision now the circles intersect in two points this means that our lost traveler can be in either of these points we're still not sure where exactly but the third satellite named c should provide us with an answer we are measuring the
distance to the gps receiver and here we are the free circles have only one common point and if our detected distances are correct this point of intersection has [Zene] gps actually measur distances let see gps satellit constantly broadcast two pieces of information their own location and their current clock time because the electromagnetic waves that are used to carry this information the space travel at speed of one can meure a distance using a stopw well if quick enough to tap it twice in a million for second with precision let say that at this moment all devices
the satellites and the receiver have synchronized clocks i'll illustrate the time on a timeline at the beginning of our timeline every satellite sends out its own position and time but before this information reaches the receiver it's already outdated mark the arrival times with letters on the timeline [Zene] now the receiver knows where and how much time away from it every satellite is to be found multiplying this by the speed of light easily gives us the distance instead of the time now finding the common point of all three distance circles and taking into account the locations
of all satellites will give us our own location and this is how gps is able to measure distance a of course in real this all happens in aensional inad of a twoensional space so a b more complicated but the basic principles are the same i hope you learned something useful thanks for [Zene] [Zene] watching [Zene] ▁
