About Atlas GNSS Correction Service

Atlas is an innovative. industry-leading GNSS-based global L-band correction service offering robust performance at market-leading prices.
Atlas is a flexible and scalable service that delivers its correction signals via L-band satellites with accuracies from one meter to the sub-decimeter range.
With around 200 reference stations worldwide and L-band satellites broadcasting Atlas corrections, practically the entire globe is covered.
The Atlas golbal GNSS correction service provides correction data for the GPS, GLONASS and Beidou constellations.

The Atlas correction service is available on all Hemisphere Atlas-enabled single and multi-frequency and multi-GNSS devices.
Atlas complements third-party GNSS receivers by allowing you to use Atlas corrections with Hemisphere’s innovative BaseLink and SmartLink features.

Using multi-frequency hardware, Atlas corrects more satellites than ever before, resulting in faster convergence times and is robust and reliable in covered or foliage-covered areas. With both single and multi-frequency hardware, Atlas achieves instantaneous sub-meter global positioning accuracy comparable to SBAS and typically more robust, as Atlas corrections include data from multiple available constellations.

Atlas Basic

Atlas Basic offers users of single and multi-frequency Atlas-enabled products the ability to achieve SBAS-equivalent performance anywhere in the world where the Atlas correction service is available. Atlas Basic is a groundbreaking new feature that offers a proven accuracy of 30 to 50 cm (95%)*. Atlas Basic provides instant submeter accuracy, enabling DGPS-level accuracy within the global regions supported by Atlas.

* Depending on the multipath environment, the number of satellites in line of sight, the satellite geometry and the ionospheric activity.

AutoSeed™ – Extended stationary re-convergence

Atlas AutoSeed allows users to interrupt the use of Atlas for any period of time. After returning to the last position, the Atlas system uses AutoSeed to perform a fast reconvergence to a highly accurate convergent position.

AutoSeed™ – Extended stationary re-convergence

Atlas AutoSeed allows the user to interrupt the use of Atlas for any period of time. After returning to the last position, the Atlas system uses AutoSeed to perform a fast reconvergence to a highly accurate convergent position.

Industry-leading capabilities

Positioning accuracy: Atlas offers competitive positioning accuracy of up to 4 cm RMS in certain applications, often exceeding the capabilities of other systems.
Positioning sustainability: State-of-the-art maintenance of position quality in the absence of correction signals using Hemisphere’s Tracer™ technology
Convergence time: Industry-leading convergence times of 10 – 40 minutes
Global Ionospheric Model: Ionospheric activity and data is sent to the receiver in real time, allowing Atlas-enabled devices to adjust accordingly, enabling excellent convergence performance

Scalable service levels

Atlas Basic: 50 cm 95% (30 cm RMS)
H30: 30 cm 95 % (15 cm RMS)
H10: 8 cm 95 % (4 cm RMS)