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Global coverage maps

From inventing VRS technology to revolutionizing Precise Point Positioning (PPP) through the creation of Trimble RTX®, Trimble is transforming the way the world works, connecting the data you need with the tools you use. We've got you covered!

How to access Trimble GNSS Corrections

You can obtain Trimble RTX correction data through Internet streams or geostationary satellites broadcasting via a beam in the L-band. Trimble VRS Now correction service is available via the Internet.

Trimble RTX Regional Atmospheric Modeling

Convergence to a precise position is faster (<1 minute) where we provide regional atmospheric modeling with very dense reference station networks.

Trimble RTX Global Ionospheric Modeling

Outside of areas with regional atmospheric modeling, we utilize global ionospheric modeling and deliver convergence times of under 3 min (ProPoint receivers).

Trimble VRS Now Initialization

Trimble VRS Now initialization is near instant.

Interactive maps

Choose the industry that matches your needs, double-click anywhere to set your location and use the checkboxes in the legend to toggle coverage layers.

The quality of the receiver and the antenna, the size of the antenna and its mounting conditions, and nearby obstructions are important considerations for utilizing Trimble RTX via the L-Band satellite or Trimble VRS Now. In challenging environments, consider switching to Trimble RTX Internet streams. Geostationary satellites for L-Band delivery are located near the equator, so avoid large obstructions in that direction (i.e. to the South if you are in the Northern Hemisphere).

In addition, ionospheric scintillation levels, GNSS constellation health and availability, jamming and interference, and the level of multipath due to nearby obstructions can impact your receiver’s ability to track the GNSS satellites and their signals. In these compromised environments, convergence times may increase while your receiver resolves GNSS signal ambiguities by using the Trimble RTX correction data.

To achieve the best results, use a multi-constellation and multi-frequency Trimble ProPoint receiver with an appropriate antenna and cabling that meet the minimum gain needed at the receiver, in an open-sky environment that is free from obstructions and interference.

coverage maps - broadcast frequency map image

Ionosphere Total Electron Content (TEC) map

This map shows the current TEC as observed and modeled by the Trimble global reference station network. These maps are updated every 10 minutes.

Fact 1

Total Electron Content (TEC) is the number of free electrons between two points, such as the receiver and satellite. Each day, as portions of the Earth's atmosphere are excited by the Sun, TEC increases.

Fact 2

During peaks of solar activity, where certain portions of the ionosphere are excited, higher TEC values (and therefore greater signal delays) will occur.

Ionosphere scintillation map

This map shows the current scintillation events as observed and modeled by Trimble’s global reference station network. Avoiding scintillation, or taking multiple observations of a point during different periods of the day, and different ionospheric conditions, can increase reliability. This map is updated every 10 minutes.

Fact 1

Space weather events such as sunspots can disturb the upper ionosphere, causing small-scale irregularities which can cause scintillations.

Fact 2

The GNSS signal wave-front is perturbed as it passes through scintillation events due to the irregularity of the density of electrons, and can cause loss of signal correlation when it reaches the receiver. It is best to avoid dusk and a few hours after to avoid the worst periods of scintillation.

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