How GPS technology works?

US military officials introduced tracking system known as GPS Global Positioning System. It is fully functional in 1995. Initially it was not for common use, only for us military but later on they decides to give access everyone in the world's and GPS provided to a lot of companies for used it in your products for common person use. Today it is an important feature in every mobiles and also used in some other services/devices for example buses, cars, laptops or other in tracking system appliances, GPS is also known as navstar navigation system. GPS directly connected with the satellite. In these days a lot of counties have own satellite for this purpose. It help people's in a lot of departments, majors problem is in this systems is accuracy that's way other countries send own satellite to space for example Russia make own system using "GLONASS satellites" it gives very accurate in major areas.

How Global Positioning System GPS Work's?

In these days, there are a lot of "Global Positioning Systems", GPS uses easy concepts but its instruments and technology is complex. There is basic main formula for all GPS systems. For example Android mobile those have locations trace ability known as GPS satellite signals receiver, These GPS satellite receiver use for receive signal from satellite with the exact transmitted time and place then android or computer software calculate distance speed, turning points according to the given maps, satellite continuously send signal to receiver hardware.

In these days this system works with at least 31 satellites orbits with 55 degree inclined equator. These satellites exist about 20,000 km from Ground level earth's and makes orbit 2 times a day. These orbit are created by us so Six satellites are always focus on famous places on the earth for hurry & accurate result access. Satellite sends signal to your receiver these signals travel with the speed of light. GPS track you location using a process known as trilateration. Trilateration is one of main algorithm concept in this system working. There are required 2 types of data by GPS receiver one is Almanac and 2nd is Ephemeris. This data continuously transmitted between satellite and GPS receiver; on the basis of this data we achieve high accuracy.

Accuracy of GPS Devices:

There is a lot of factor in location tracker, it also depend on devices, positions in the sky of satellites effect on high accuracy GPS, You know time is very important and play key role to calculate accurate location, so that is the reason every satellite has atomic clock that save very adhering time. After improvement every point in this world (In range of GPS) focus by four satellites & after confirmation & approved by all four on same point, send signal by one to receivers. Receiver can assess your location in 3 Amplitude 1st is east, 2nd is north and 3rd is altitude. In latest technology also use combination of GPS and Russian satellites for get better courage & accuracy. we already know we require 4 satellite for accurate result but unfortunately if one satellite is not working in area or not in range then you get your location too but it is 2D and may be not accurate because one satellite data is gather by prediction and you got location result approximately but if you in rage of 4 satellite you fetch 3D result and it is accurate as compare to 2D results.

Uses of GPS:

It is totally free for every company so there is a lot of application made for this purposes usually it is used in Road Transports, Aviation’s, Shipping & Railways, Science, and Security guidance applications.    

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