If you have ever been lost in an unknown city, you know that the feeling is not the best.
With the arrival of GPS devices. Traveling to cities and countries that you have never been to has become fun.
These devices are increasingly winning people over, regardless of the area in which they work.
Taxi drivers are perhaps those who have benefited most from the creation and popularization of GPS.
Using the maps of a city. It is possible to reach any address.
Without having to know places like the palm of your GPS tracking.
You may have heard of them.
The operation of a GPS device is very interesting to study, and also complex.
Has anyone stopped to think?
About how a device as small as a GPS receiver can determine its location on Earth? No! So how about learning now?
GPS (Global Positioning System)
The GPS (Global Positioning System) is a device that had its origin in the United States Department of Defense.
Its function is to identify the location of a device called a GPS receiver.
Receiving devices, in turn, have the function of sending a signal to satellites.
Thus, by making some calculations, which you can view below.
The fleet tracking receiver is able to determine your position.
And, with the help of some city maps.
Indicate which paths you can take to reach the desired location.
For the GPS tracking online to work correctly, it is necessary to use three components, called: spatial, control, and user.
Space is composed of twenty-seven satellites that are in orbit.
Twenty-four of them are active and three are the “reserves”.
Which comes into operation in the event of a failure with one of the main satellites.
The arrangement of these satellites in orbit ensures.
That, there are always at least four of them available anywhere on the planet.
So, whenever you and a person who lives in Japan are using GPS.
You will surely be able to use the device without a problem.
The second component, control, is nothing more than satellite control stations. Altogether there are five stations spread across the globe.
Their main function is to update the current position of the satellites.
Also, synchronize the atomic clock present in each of the satellites to Vehicle Tracking.
The last but not least component is the GPS receiver.
This is the only one of the three. That we, the users, must acquire in order to use this marvel of technology.
A GPS receiver is nothing more than a device.
That shows your position, time, and other features that vary from device to GPS Fleet Tracking.
Checkout: Plan your Trip Perfectly
The operation of the GPS system involves some very complex calculations. But only one of them is really important for this article.
This is the calculation made by the receiver in order to calculate the position you are in Truck GPS.
How does GPS know where I am?
Satellites, like GPS receivers. Have an internal clock, which marks the time with nanosecond precision.
When the signal is emitted. The time it “leaves” is also sent to satellite.
This signal is nothing more than radio signals. Which travels at the speed of light (300 thousand kilometers per second, in a vacuum).
By timing how long this signal took to arrive. The receiver can calculate its distance from the satellite.
Since the position of the satellites is constantly updated.
It is possible, through these calculations, to determine their exact position of van Trackers.
Now that you know how the distance to a satellite is calculated.
It will be easier to understand how the satellite uses this information.
To determine its location with good accuracy (error of only 20 meters).
GPS uses the triangulation system to determine the location of a receiver on the ground.
For example, when you are a little lost, and ask someone “Where am I?”.
The person’s response may be, “Oh, you’re 10 kilometers from city X”.
Of course, you can be 10 kilometers in any direction of the city.
Then, you can draw a circle to determine the possible area you are in.
The same can be done with other reference points (in our case, Y and Z).
Thus, triangulate the points to determine exactly their position. The GPS system works the same way.
This principle is called trilateration with truck GPS navigation.
A fourth satellite is needed to determine the altitude you are at a GPS satellite navigation system.
The calculation principle is the same.
But it involves some extra numbers and formulas because it is a three-dimensional space.
After a long time in orbit. It is normal for the satellites to begin to show defects and become outdated, technologically speaking.
This problem is starting to affect the functioning of the satellites responsible for the GPS signal.
Live GPS vehicle tracking is estimated that by the year 2010. Signal reliability will drop to ninety-five percent. An unprecedented fact in the history of GPS.
The “scraps” that orbit the Earth are also proving to be true enemies of functional satellites.
The collision between space debris in orbit and satellites is becoming more and more frequent.
There is a project to launch new satellites in order to replace the current ones.
However, such a GPS fleet project is three years behind schedule, and there is no indication that it will happen soon.
For this reason, the countries of Europe have come together.
And, are already building their own GPS system, called Galileo. which is expected to start operating by the year 2013.
Russia also has an alternative project to American satellites.
It is a car tracker. Which is not yet scheduled to go into operation.
But which promises greater reliability than the current GPS system.
Neither of the two alternative systems mentioned a price for the use of satellites.
Or if they will make the service available to everyone.
As is currently the case. Now it is wait to see.