GPS stands for "Global Positioning System." This system uses wireless technology to operate; the entire system consists of satellites and receivers. As the name suggests, GPS is widely used to determine the exact geographic location of an entity.
The system is made up of 24 geo-synchronous satellites, which continuously transmit position. The GPS data collection happens through a GPS unit - equipment with capacity to send and receive signals to connect with satellites. This GPS unit then considers the relative position of at least 3 satellites and determines its absolute geographic position.
This is an error correction functionality that was built into the existing GPS systems. Also known as DGPS, differential GPS is used in applications where accurate and precise results are desired.
GPS data collection from a receiver at a known location is used to correct the data from a receiver at an unknown location. Both the receivers track the same GPS signal. The measurement of the difference in the positions of these two receivers is used to accurately determine the position.
Industrial Data Collection Using GPS
GPS was originally conceived as a navigation tool for military applications. With speedy developments in technology, GPS has improved its usability. It is now used in many areas as a navigation system and a tracking device, as well as for surveying and mapping.
Transmitting and receiving signals for the data collection are main functions of a GPS unit. The data thus collected can be used for further analysis and statistics.
Tracking systems is an area where GPS is used widely. It helps the central monitoring unit keep track of people and/or vehicles. For example: On a highway, industrial GPS systems are used to track the number of vehicles and use the data in determining the period when the highway is most busy.
Another area where GPS is extensively used is navigation systems. Navigation systems use maps to help users determine their exact location. GPS software can perform tasks like locating a unit or finding a route from one point to other using GPS coordinates. The software can also dynamically determine the shortest possible route from one point to another.
GPS is also extensively used in air and marine transportation as well as in applications such as oil exploration and construction. Many organizations such as municipal corporations and railroad companies also use GPS for identifying exact location of underground railway routes and undergrounds cabling and sewage systems.
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