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GPS technology was designed and controlled by the U.S. Department of Defense (DOD), and it not only detects the place of an asset but also records its position at normal intervals of time. The recorded info can also be stored inside the tracking unit, or can also be transferred to a database or an world-wide-web based computer, utilizing a cellular (GPRS), satellite modem or a radio enclosed inside unit. This helps the asset's position being exhibited against a map backdrop either in real-time or though analyzing the track using customized software. GPS equipped vehicles aid you in planning your trips properly with a moving map display. Numerous emergency assistance units like police cars, fire trucks, or ambulances are employing GPS receivers to discover the locations of their resources, hence enabling probably the most immediate response in emergency situations. GPS technology requires at least 24 satellites orbiting at 11,000 nautical miles over the Earth's surface, completing each orbit in 12 hours. The receivers can also be component with the car accessories or the highly precise military kind equipment that receive transmitted satellite signals from 4 GPS satellites. These signals are extrapolated to occur at the right position in 3 dimensions. Each satellite is fitted with an accurate clock which allows it to broadcast signals and a precise time message. The accuracy on the clocks need to be far better than 0.03 nanoseconds. This precision is incredibly important as the receiver needs to be in a position to find out the time it takes for the signals to travel from every satellite. The deviation inside time after the signal is sent and received, multiplied by the speed of light, helps the receiver to account the distance towards satellite. Though it needs 3 satellites to determine the latitude and longitude with the receiver's position, it requires another satellite signal to calculate the altitude. GPS vehicle tracking could be the fastest-developing GPS application. GPS equipped fleet vehicles, courier services, transportation systems and delivery trucks utilize GPS receivers to monitor their locations in no time, hence improving overall efficiency. Whether an isolated desert or the deep blue ocean, GPS always comes towards the rescue.
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