| The Global Positioning System (GPS) is the fully | | | | Richard B. Kershner were involved in research to |
| functional Global Navigational Satellite System | | | | monitor the movements of the satellite Sputnik, |
| which will help in determining the location, speed | | | | which later resulted in the technological |
| direction and time with the assistance of 24 | | | | development of GPS. |
| medium earth orbit satellites. Known as a useful | | | | There are chances of the speed of GPS getting |
| tool for mapmaking, land surveying, commerce, | | | | affected by the inconsistencies of atmospheric |
| and scientific uses, GPS is now a widely used | | | | conditions. But this can be improved with the |
| navigation aid world wide. It is also used for | | | | correction of these errors. In the advanced |
| various applications including study of earth | | | | modern world, GPS is mainly used in various daily |
| The current GPS is divided into three major | | | | life equipments including mobile phones. These |
| segments called space segment (SS), control | | | | devices help in making mobile phones more |
| segment (CS), and user segment (US).It is the | | | | sophisticated and technologically advanced. With |
| navigation message broadcasted by GPS satellites | | | | the mobile phones connected with GPS, the user |
| that provides the time-of-day, GPS week number | | | | will find it no hard to understand the location, |
| and satellite health information. | | | | climatic conditions and other geographical details. |
| The history of GPS traces back to the early | | | | Nowadays, GPS devices are connected with cars, |
| 1940's when the World War II was on full swing. | | | | helping the drivers in getting the exact knowledge |
| But it was the launching of Sputnik in 1957 by | | | | of the geography, climate and details ensuring |
| Soviet Union that paved for later developments in | | | | safe driving at strange areas. |
| this field. A team of U.S. scientists under Dr. | | | | |