A Global Positioning System or GPS is a technology that uses a satellite to track your whereabouts on earth. A satellite sends a signal to a GPS device to track where you are on the map programmed into the GPS unit. A GPS unit is a great way to help you get somewhere you haven't been before, without having to unfold that bulky map while your driving, or stopping to ask directions.
History
The United States Department of Defense developed GPS with the help of Dr. Ivan Getting and the Massachusetts Institute of Technology (MIT). The GPS technology was first identified in the 1950s but it was only in 1978 where the first GPS was operated for the benefit of the US military. A total of 11 satellites were launched to support GPS at that time. In 1983, GPS was made available to the public. Due to the increase in demand and need for more features for GPS, the satellites were increased to 24.
How it Works
A GPS device has an antenna that sends signals and receives information from satellites. In order to track the location on a map, the device has a map installed. The device also tells you where you are currently navigating as well as your speed, altitude and compass information. Other features may be available in different kinds of devices.
Types
There are several types of GPS. systems. The most common are the in-dash, handheld, and portable GPS devices. In-dash GPS systems are devices that are built in a car's dashboard and mainly assist the driver in navigating the road. Meanwhile, handheld GPS devices are gadgets that come in the form of mobile phones, smartphones or PDAs which can be easily carried and stored. Lastly, portable GPS systems are smaller than the in-dash type but more affordable. These portable devices can be mounted or dismounted from the car's dashboard. Portable GPS systems can also be used by pedestrians.
Specialized GPS
As GPS devices come into popularity, developers have come up with gadgets that cater to certain types of individuals. Manufacturers have developed GPS systems for cars, which typically have a larger LCD screen to assist the driver in navigating. GPS systems have also been developed for sports enthusiasts such as mountaineers or sailors to help them navigate their way in the sea or mountains.
Optional Accessories
The default device that consumers get from manufacturers is the GPS receiver itself. But in order to improve the individual experience, the data storage can be expanded through buying and integrating secure digital cards. Users can also improve the reception of their GPS system by purchasing more powerful antennas.
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