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Difference Between GPS and DGPS

GPS vs DGPS

Summary: Difference Between GPS and DGPS is that a global positioning system (GPS) is a navigation system that consists of one or more earth-based receivers that accept and analyze signals sent by satellites in order to determine the receiver’s geographic location. While DGPS stands for Differential Global Positioning System, is an enhacement in GPS that is created to provide more location accuracy. from the 15-meter nominal GPS accuracy to about 10 cm for best implementations.

Difference Between GPS and DGPS

GPS

A global positioning system (GPS) is a navigation system that consists of one or more earth-based receivers that accept and analyze signals sent by satellites in order to determine the receiver’s geographic location. A GPS receiver is a handheld, mountable, or embedded device that contains an antenna, a radio receiver, and a processor. Many include a screen display that shows an individual’s location on a map. Some also function as a portable media player. Many mobile devices such as smart phones have GPS capability built into the device or as an add-on feature. Some users carry a handheld GPS receiver; others mount a receiver to an object such as an automobile, boat, airplane, farm and construction equipment, or computer.

The first and most used application of GPS technology is to assist people with determining where they are located. The data obtained from a GPS, however, can be applied to a variety of other uses: creating a map, ascertaining the best route between two points, locating a lost person or stolen object, monitoring the movement of a person or object, determining altitude, and calculating speed. Many vehicles use GPSs to provide drivers with directions or other information.

DGPS

DGPS stands for Differential Global Positioning System, is an enhacement in GPS that is created to provide more location accuracy, from the 15-meter nominal GPS accuracy to about 10 cm for best implementations. Satellites in the space provides signals to the earth’s surface at the speed of light, but through any atmospheric change there can be an error. And due to this error a delay can be caused, and for all these errors, DGPS is created and it adjusts these errors to provide accurate location. Fixed, ground based reference stations are used in the DGPS systems, that broadcasts the difference between positions GPS satellite systems and known fixed positions. DGPS refers to a general technique of Augmentation.

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