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 ?
It has the ability to survey beaches at a range of 15 kilometers, in addition to accurately identifying its precise location with a margin of error of less than 20 centimeters using differential GPS, as well as specifying, monitoring and tracking targets.
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.
(11.) Rankin James, "GPS and Differential GPS: An Error Model for Sensor Simulation," Position Location and Navigation Symposium, 1994., IEEE, doi:10.1109/PLANS.1994.303322
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.
The Geomatics Technologies include tools, technique, methods and system used in Remote Sensing (RS), GIS, GPS, Differential Global Positioning System (DGPS), Satellite Differential GPS (SDGPS), Global Navigation Satellite System (GNSS), Global Navigation Satellite System (GLONASS), Cartography, Photogrammetry, Land Surveying and related forms of digital global mapping which are emerging swiftly and becoming profitable for many organizations specially regarding utilities throughout the world.
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.
This includes not just the LIDAR but also an inertial navigation system, which provides precise positioning information by monitoring the vehicle's own movement and combining the resulting data with differential GPS and a highly accurate digital map.
The surface elevation of the waste dump has been created from differential GPS measurements.
Basic GPS consists of a single receiver unit while differential GPS (DGPS) consists of two devices-one stationary at a known location and another roving in the field which makes measurements.

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