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A GPS navigation device , GPS receiver , or simply GPS is a device that is capable of receiving information from GPS satellites and then to calculate the device's geographical position. Using suitable software, the device may display the position on a map, and it may offer directions. The Global Positioning System (GPS) uses a global navigation satellite system (GNSS) made up of a network of a minimum of 24, but currently 30, satellites placed into orbit by the U.S. Department of Defense . [1]

The GPS was originally developed for use by the United States military, but in the 1980s, the United States government allowed the system to be used for civilian purposes. Though the GPS satellite data is free and works anywhere in the world, the GPS device and the associated software must be bought or rented.

The Russian Global Navigation Satellite System ( GLONASS ) was developed contemporaneously with GPS, but suffered from incomplete coverage of the globe until the mid-2000s. [3] GLONASS can be added to GPS devices to make more satellites available and enabling positions to be fixed more quickly and accurately, to within 2 meters. [4]

Using the GPS information and subject to the sophistication of installed GPS software, a GPS device used as an automobile navigation system may be used in a number of contexts, including:

As with many other technological breakthroughs of the latter 20th century, the modern GPS system can reasonably be argued to be a direct outcome of the Cold War of the latter 20th century. The multibillion-dollar expense of the program was initially justified by military interest.

In 1990, Mazda 's Eunos Cosmo was the first production car in the world with a built-in GPS navigation system . [5] In 1991, Mitsubishi introduced GPS car navigation on the Mitsubishi Debonair (MMCS: Mitsubishi Multi Communication System). [6] In 1997, a navigation system using Differential GPS was developed as a factory-installed option on the Toyota Prius . [7]

A GPS navigation device , GPS receiver , or simply GPS is a device that is capable of receiving information from GPS satellites and then to calculate the device's geographical position. Using suitable software, the device may display the position on a map, and it may offer directions. The Global Positioning System (GPS) uses a global navigation satellite system (GNSS) made up of a network of a minimum of 24, but currently 30, satellites placed into orbit by the U.S. Department of Defense . [1]

The GPS was originally developed for use by the United States military, but in the 1980s, the United States government allowed the system to be used for civilian purposes. Though the GPS satellite data is free and works anywhere in the world, the GPS device and the associated software must be bought or rented.

The Russian Global Navigation Satellite System ( GLONASS ) was developed contemporaneously with GPS, but suffered from incomplete coverage of the globe until the mid-2000s. [3] GLONASS can be added to GPS devices to make more satellites available and enabling positions to be fixed more quickly and accurately, to within 2 meters. [4]

Using the GPS information and subject to the sophistication of installed GPS software, a GPS device used as an automobile navigation system may be used in a number of contexts, including:

As with many other technological breakthroughs of the latter 20th century, the modern GPS system can reasonably be argued to be a direct outcome of the Cold War of the latter 20th century. The multibillion-dollar expense of the program was initially justified by military interest.

In 1990, Mazda 's Eunos Cosmo was the first production car in the world with a built-in GPS navigation system . [5] In 1991, Mitsubishi introduced GPS car navigation on the Mitsubishi Debonair (MMCS: Mitsubishi Multi Communication System). [6] In 1997, a navigation system using Differential GPS was developed as a factory-installed option on the Toyota Prius . [7]

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