Introduction of geographical positioning system (GPS) and its application

Here, we explain geographical positioning system and its application. In the past, when there wasn’t advanced technology, people tourists specially, couldn’t find their exact place specially in other cities and countries, and even they had lost themselves on seas and deserts. In the world of yesterday, people used stars, compass, and other natural factors to find their ways. All of these items, guided people in the past, but today, geographical compplexities such as cities, streets,… makes these previous items useless. In this condition, by development of various technologies, a modern satellite system solves this problem, that is geographical positioning system (GPS). In fact, today’s world is a world that not one lost there, and everything can be found there. This power is provided by recognition systems, satellites, computers … we usually find “GPS” as a system to find the position, while GPS can also show the time exactly. So, why shouldn’t we use it to synchronize different systems? Now, GPS uses to adjust the time of computer networks, calibrating transportation systems, synchronize systems of mobile pictures’ introduction, etc… the best way to determine the exact time of year change is GPS. GPS can measure its distance to GPS satellites. Here, different components of GPS will explain and effective factors of its accuracy and its application will define.