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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!

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.
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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