Correction Services for Infrastructure
Infrastructure projects need GNSS correction services
Increase accuracy of surveying and construction jobs
Increase accuracy of surveying and construction jobs
DOWNLOAD TOPNET LIVE E-BOOKServices for wherever work takes you
Topnet Live is a global GNSS correction service that delivers positioning data to surveyors and construction teams whose projects use satellite positioning. Roving surveyors and construction workers, along with heavy construction equipment with satellite navigation systems, use this service for high-accuracy applications such as field surveys, jobsite layout, earthworks, paving, and as-built reporting.
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Why are GNSS correction services needed in construction and survey?
GNSS receivers must compensate for inaccuracies related to satellite constellations and atmospheric conditions. If these signals are not corrected, position calibration can be off by several metres - causing construction clashes, rework, safety risks, or even property disputes.
Full-constellation service
The Topcon reference station network uses five GNSS satellite systems: GPS, GLONASS, Galileo, QZSS, and BeiDou. This ensures the best global coverage, accuracy, and reliability.
What are RTK and PPP, and why do they matter?
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RTK (Real-Time Kinematic positioning)
Realpoint uses a network of regional reference stations to enhance satellite positioning data. Start-up time is nearly instant when in range of the network.
Constant coverage
SkyBridge provides seamless PPP infill support in areas where RTK coverage is limited.
PPP (Precise Point Positioning)
Starpoint Pro calculates positions at the centimetre level using a single receiver in a global reference framework. It has a slower start-up speed, but provides service anywhere on the planet, independent of local networks.
Topnet Live service options
Choose RTK, PPP, or bridge both with borderless service that automatically switches between regional GNSS reference networks. Several subscriptions are available on the Topnet Live website.
Realpoint
Provides network RTK accuracy and a quick start-up time where Topnet Live is available
Description
RTK via cellular network
Correction type / delivery
Regional
Coverage
2 cm
Accuracy
Seconds
Initialisation time
MAGNET Field
Pocket3D
3D-MC
Supported field software
Skybridge
Provides and maintains positional accuracy when RTK services are interrupted
Description
Corrections via satellite
Correction type / delivery
Regional or local
Coverage
Infill for RTK
Accuracy
Automatically activates when
RTK signal is lost
Initialisation time
MAGNET Field
Supported field software
Starpoint Pro
Provides PPP service anywhere on the planet, independent of local
networks
Description
Corrections via satellite
Correction type / delivery
PPP via L-Band or NTRIP
Coverage
3-6 cm
Accuracy
Initialisation time
MAGNET Field
Supported field software
What's your application?
Learn about GNSS receivers and machine control systems that work with Topnet Live.
![](https://marvel-b1-cdn.bc0a.com/f00000000246691/www.topconpositioning.com/sites/default/files/dxpr-builder/correctionservices_infrastructure_contentimage03.jpg?fid=273861)
Use Topnet Live with a rover
![](https://marvel-b1-cdn.bc0a.com/f00000000246691/www.topconpositioning.com/sites/default/files/dxpr-builder/correctionservices_infrastructure_contentimage02.jpg?fid=273866)
Use it with machine control
Learn more about why you can trust Topnet Live
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