Centimeter, Decimeter and Submeter Accuracy Anywhere in the World
Atlas® is a worldwide GNSS differential correction service, offering the most innovative base station-free corrections via L-Band satellites at accuracies ranging from meter level to a few centimeters. The Arrow Gold® GNSS, with its L-Band support, provides worldwide decimeter positioning to your smartphone, tablet or notebook computer. With numerous reference stations worldwide and L-Band satellites distributing coverage from 75°N to 75°S, all of the earth’s landmass is covered. When an Arrow Gold® is subscribed to an H10 service, SafeRTK® takes over when RTK network becomes unavailable and maintains your accuracy for the rest of the outage period. With Atlas® and Arrow GNSS receivers, you can acquire 4-50 cm positioning accuracy anywhere in the world, depending on your subscription.
Service Levels Available
Atlas® H50 Subscription
The H50 (Basic) service provides 30-50 cm (submeter) accuracy worldwide, and is activated with one-time lifetime subscription.
Atlas® H30 Subscription
The H30 subscription provides 15-30 cm (subfoot) accuracy in the same manner as the H10 service.
Atlas® H10 Subscription
The H10 service delivers 4 cm (survey-grade) accuracy to any device when subscribed to Atlas®.
What to Know about Atlas® Convergence Times
How Long Does Atlas® Take to Converge?
It Depends Which Subscription You Take
The Arrow Series® GNSS receivers use the Atlas® signal in a similar way that they use the carrier phase from an RTK network. The difference is that the correction methods used by Atlas® are global as opposed to local corrections from a base station or an RTK network. Because of this, Atlas® requires a longer convergence time than RTK to achieve the specified accuracy.
- H10 service: Typical convergence time (to decimeter) varies between 12 to 20 minutes depending on the status of GNSS constellation.
- H30 service: An average of 4-5 minutes is required.
- H50 service: Reaching submeter is nearly immediate.
Once convergence is achieved and since carrier phase is used, the accuracy will remain consistent (and even improve in time) as long as the Arrow’s antenna maintains a clear, unobstructed view of the sky.
Which Arrow Series® GNSS Receivers Support Atlas® Service?
Arrow 100+™
The Arrow 100+™ (plus model) can be used with an Atlas® H50 subscription worldwide for submeter (30 cm HRMS) when no SBAS is available.
Arrow Gold®
The Arrow Gold® supports all Atlas® subscriptions, for 4-50cm accuracy worldwide, when no RTK network, base station or SBAS is available.
Arrow Gold+™
The Arrow Gold+™ (plus model) supports all Atlas® subscriptions, for 4-50cm accuracy worldwide, when no RTK network, base station or SBAS is available.
How Atlas® Service Works
Learn about this L-Band differential correction source
GNSS data are collected from numerous base stations spread all over the world. Data is then processed at various control centers, and corrections are uplinked to strategically located geostationary satellites. Each satellite then broadcasts corrections for its region over specific L-Band frequencies.
Arrow Series® GNSS receivers, when subscribed to an Atlas® service, receive both GNSS signals and the L-Band corrections on the same antenna and outputs a corrected position to your mobile device (typically running a data-collection app as well as Eos Tools Pro).
Recommended Resources
Atlas® Service: Get Higher Accuracy in Remote Areas
What is Atlas®? Paid Differential Correction Service in Remote Areas
Browse Customers Using Atlas® Service with Arrow GNSS Receivers
Examples of real places where customers are using Atlas® subscriptions include the Appalachian mountain region of the United States, the Caribbean, South America (where the North American SBAS, i.e., WAAS, coverage stops), Australia (while waiting for the SouthPAN SBAS to become fully operational), and Africa (where there is currently no fully operational SBAS).
Customer Spotlight: Ronald Stith López Improves Water Systems using GIS Across Peru and Colombia
GIS is more than just a job to Ronald Stith Lopez. It's a way to improve people's lives. Learn how Ronald uses GNSS across Peru and Colombia.
More Info
Rural Utilities Get Higher Accuracy Asset Data in Appalachia
In 2018 Ohio began requiring public water utilities to maintain a detailed AMS. RCAP is simplifying compliance with ArcGIS and Arrow Gold for Asset Management.
More Info
Haiti Outreach Transforms Water Access with High-Accuracy Maps
Neil Van Dine and Jean-Yves Lauture explain how Haiti Outreach uses Arrow GNSS and spatial software to transform the Western Hemisphere's poorest nation.
More Info