The mobile station corrects the positioning result by receiving the difference value from the
reference station, which can improve the positioning accuracy.
To realise this objective, and calculate the dynamic movements of the Abu Dhabi
reference station network, satellite data and readings of these stations must be processed in conjunction with a reference satellite accurate data and readings of several Global
Reference Stations of IGS, specially designed for this type of calculation and references.
Therefore, for each test series, five
reference stations are chosen based on distance, altitude criterion, and amount of common data.
Several NRTK techniques exist and the most commonly used at present are, for instance, the Master Auxiliary Concept (MAC) [4, 5], the Virtual
Reference Station (VRS) concept [6], and the FKP techniques [7], as well as the Network Adjustment (NetAdjust) concept developed by Raquet and Lachapelle [8, 9].
The
reference stations of Korea are densely located ranging from 30 to 50 km for most of the baselines, which should be a worthy infrastructure for NRTK positioning.
The translation parameter values increase proportionally to the number of used fixed
reference station. The scale and orientation of the network remains consistent with the changing number of fixed
reference stations.
Each GPS-S includes one
reference station and two rover stations.
TAG's military GNSS survey system will deliver enhanced on-site GPS positioning with centimeter-level accuracy using Real-Time Kinematic (RTK) software combined with wireless data from the
reference station and rover units.
It consists of inspecting the entire prop and measuring blade width, thickness and angle at each
reference station (defined distances from the hub), check face and edge alignment, grind out nicks and gouges, strip the paint, inspect for cracks, inspect the bolt holes and hub, correct any errors in blade angle and track and then paint and balance the prop.
A central
reference station (station 77) in addition measures air pressure and net radiation and employs multiple rain gauges.
It's a one-stop solution, said Wendy Watson, Director,
Reference Station OperationsGNSS reference networks.