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Differential GNSS

Differential GNSS (DGNSS), including differential GPS (DGPS), supplement and enhance the positional data available from global navigation satellite systems (GNSS), such as the American Global Positioning System (GPS) and other similar systems. A DGPS can increase accuracy of positional data by about a thousandfold, from approximately 15 metres (49 ft) to…

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Differential GNSS

Nodes68
Edges67
Triples12
Avg. degree1.97
Density0.029412
Components1

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Important terminology

dgps gps system data accuracy correction position coast receivers stations guard navigation united states ground-based satellite broadcast also ft us

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
LORANinstance ofwas encrypted and was available only to authorized users with the decryption keys.This presented a problem for civilian users who relied upon ground-based radio navigation systems0.80text
VORinstance ofwas encrypted and was available only to authorized users with the decryption keys.This presented a problem for civilian users who relied upon ground-based radio navigation systems0.80text
NDB systems costing millions of dollars each year to maintaininstance ofwas encrypted and was available only to authorized users with the decryption keys.This presented a problem for civilian users who relied upon ground-based radio navigation systems0.80text
approaching aircraftinstance ofThis is most commonly used in navigation of moving vehicles0.80text
ships.If the corrections are of the pseudorange typeinstance ofThis is most commonly used in navigation of moving vehicles0.80text
the receiver applies the corrections to apparent pseudoranges before it calculates the positioninstance ofThis is most commonly used in navigation of moving vehicles0.80text
virtual reference stationinstance ofSome of them provide advanced features0.80text
where corrections from several nearby stations are combined to provide a better estimate of errors for the request locationinstance ofSome of them provide advanced features0.80text
survey markers.The GPS measurements are stored in the GPS receiversinstance ofRelated methodsPost-processingPost-processing is used with Differential GPS to obtain precise positions of unknown points by relating them to known points0.80text
and are subsequently transferred to a computer running the GPS post-processing softwareinstance ofRelated methodsPost-processingPost-processing is used with Differential GPS to obtain precise positions of unknown points by relating them to known points0.80text
survey markers.The GPS measurements are stored in the GPS receiversinstance ofPost-processingPost-processing is used with Differential GPS to obtain precise positions of unknown points by relating them to known points0.80text
and are subsequently transferred to a computer running the GPS post-processing softwareinstance ofPost-processingPost-processing is used with Differential GPS to obtain precise positions of unknown points by relating them to known points0.80text

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