differential GPS

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differential GPS

[‚dif·ə¦ren·chəl ¦jē¦pē′es]
A technique for improving the accuracy of the Global Positioning System (GPS) in which error corrections are transmitted to users based on measurements of GPS signals by one or more reference receivers situated at known locations. Abbreviated DGPS.

differential GPS (global positioning system)

differential GPS (global positioning system)
The system of establishing position by getting the fix from a constellation of navigational satellites, in which the errors caused by the atmosphere or the ionosphere and those induced by selective availability are corrected. The system has a much higher accuracy than the conventional GPS. It uses two receivers, a rover at an unknown location (aircraft's GPS receiver), and a base station at a known fixed location. The base station computes corrections based on the differences between its actual and observed ranges to the tracked satellites and sends the correction to the rover receiver.
References in periodicals archive ?
NTRIP (Networked Transport of RTCM via Internet Protocol) is a protocol to send GNSS related data through the internet, which enables users of differential GPS or network RTK to get correction parameters after connecting to the internet.
The FEV Smart Vehicle uses sensors and interfaces, including radar, GPS, differential GPS, multiple cameras, and LIDAR, to allow the vehicle to travel safely without a driver on a designated roadway, reacting to its environment due to the fusion of sensor information.
Tenders invited for Supply of cable with connectors for differential gps
The reference station will have the capability to receive and collect GPS data and compute and transmit real-time kinematic (RTK) differential survey and local area differential GPS corrections.
Differential GPS (DGPS), which enhances the system through a network of fixed, ground-based reference stations, has improved accuracy to about one meter.
Two, differential GPS (DGPS) and wide-area augmentation system (WAAS), are already being used in some available commercial GPS navigation systems.
Some of the traces left behind by former tsunami waves may be identified by mapping the coastline, whereas other evidence may only be identified utilising hi-tech instruments such as ground penetrating radar or differential GPS," said Dr Gosta.
The surface elevation of the waste dump has been created from differential GPS measurements.
SmartPath ground-based systems provide differential GPS corrections, satellite health and approach paths to replace or supplement Instrument Landing Systems (ILS) currently used at airports.
used real-time data from the agency's Global Differential GPS (GDGPS) network to successfully predict the size of the resulting tsunami.
Differential GPS (DGPS) is available as an optional unit.
WAAS and LAAS are both kinds of differential GPS, where ground stations are used to measure GPS errors and send correction info to the pilot.

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