Over the years, the technology involved in production of a vehicle has become more advanced, as car manufacturers move their focus from basic transport to the design features that make a vehicle more secure, more comfortable, and more easily managed. One such feature is the GPS.
A GPS unit includes a space section, a control section, and a customer section. The space section is a combination of two dozen satellites revolving about the earth twice every 24 hours, at around 10,900 nautical miles above the surface of the earth. They are financed and managed by the U.S. Department of Defense. The control section is a series of tracking channels located at different sites in the world. These channels upgrade and correct mistakes in the navigational message of the satellite. The customer section is a recipient that gets radio signals from the satellites in space. It can identify its distance from each satellite by tracking the duration a radio signal takes to travel from the satellite to the recipient. Four satellites are used at the same time to determine the accurate place of the recipient in the world. The precision of a common GPS receiver is about 10-15 meters. Through this it is not possible for finding a small item such as a vehicle, which is about three meters long. Differential GPS (DGPS) is a technology that enhances the GPS receiver’s precision about to one to two meters. A GPS device can offer useful details about the vehicle’s place and the best journey tracks to a given location by connecting itself to a built-in electronic map. GPS can aid in the restoration of a thieved car. Incorporated with the vehicle protection system, GPS can inform the car owner by cellphone or e-mail when the car alert is activated, and indicate the place of the car.