How does a GPS work | How does GPS tracking work
How does a GPS work
The Global Positioning System (GPS) is a satellite-based navigation system used to locate the location of an object that is made up of at least 24 satellites. GPS works 24 hours in any weather.
GPS technology was first used by the United States military in the 1960s and expanded over the next few decades to civilians in the 1980s.
It is used more in transport, with the help of this, we can easily find the way to any place, we can easily find the distance of any other location from our location.
Where is GPS used
Initially gps was used as a consumer GPS receiver for aircraft, ships, surveying, mountaineering etc., but in recent years it has been used in car navigation systems, mobile phones, smartphones, mobile terminals, laptop computers, digital cameras. , radar, etc. Now it is widely used in detectors and other equipment.
How does GPS tracking work
The distance is measured by the time difference of the radio waves from the satellite to the GPS. “GPS” is a global satellite positioning system operated by the United States, which is an acronym for Global Positioning System.
To briefly explain the principle of GPS, “24 artificial satellites are flying at an altitude of about 20,000 km, and the position is specified by the GPS terminal to receive the signals transmitted by those satellites.”
To elaborate a bit… Positioning satellites are equipped with extremely precise clocks. The satellite transmits time and orbit information over radio waves, and when the GPS terminal receives the information, the time difference between transmission and arrival can be calculated.
Although the time difference is small because radio waves travel at the speed of light, the distance between the satellite and Earth is sufficiently long, so there is a time difference that can be calculated. The distance between the satellite and the GPS device can be measured by multiplying this time difference and the speed of light.
And if you know the distances from the four satellites, then the position in three-dimensional space is determined theoretically. However, due to calculation errors, in practice it is necessary to receive signals from about six satellites. Also, the more satellites the signal can receive, the more accurate the positioning will be.
[How does a GPS work | How does GPS tracking work]