Topnet Live Corrections
GNSS positioning correction service
Designed to meet the unique needs of our customers by providing reliability and accurate positioning
Global GNSS correction service

Topnet Live is a real-time GNSS correction service that delivers high-quality data to GNSS receivers around the globe. Sold through aftermarket, system integrators and OEM channels, the service can be used in a variety of applications including survey, construction, GIS, mapping, and agriculture. With the emergence of IoT-enabled devices, correction services offer even more industries seamless connectivity.
Fully compatible with all models of network-capable rovers, a wide variety of subscription options are available for easy access through the Topnet Live website. Topcon Positioning Group operates and monitors all Topnet Live networks. Topcon's geodetic specialists and professional standards ensure high-quality correction data is delivered to each GNSS receiver.
Application fields

Construction
Topnet Live is increasingly employed in high-profile construction projects in the shift away from on-site base stations. Large highway construction projects, airport runways and machine control operations all benefit from the reliable accuracy and performance of Topnet Live GNSS reference networks.
Agriculture
Topnet Live networks deliver consistent and accurate positions to precision agriculture machines used in applications across the crop cycle such as soil preparation, seeding and crop care. Equipped tractors, sprayers, spreaders and harvesters benefit from fast initializations and reliable positioning any time of the day or night.

Survey
Topnet Live delivers high-accuracy positioning to professional surveying and engineering applications such as land surveys, engineering surveys, GIS and mapping. Topnet Live removes the need for individual base stations, dramatically increasing production and safety.
OEM – System integrators
Topnet Live is a global positioning correction service for system integrators, product designers and OEMs. It is ideal for scalable, precision GNSS positioning applications such as automotive, Industrial IOT and autonomous robotics.
Technology overview

In order to provide precise positioning accuracy, a GNSS receiver needs to compensate for inaccuracies caused by satellite constellations, receiver hardware and atmospheric conditions. These inaccuracies can be calculated by a network of fixed reference stations that constantly receive GNSS data.
This correction information is then broadcast to GNSS receivers as a service. Topnet Live is Topcon’s GNSS correction service and consists of the reference station network, correction calculation software and the correction broadcast service.
For more details, Please refer to the "Topnet Live for Agriculture ebook" PDF