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Trimble-IonoGuard-RTK-GNSS-TechPub

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Customer Diagnostics Troubleshooting issues in high precision positioning systems can be an expensive endeavor. Multipath, jamming and other factors can cause similar outcomes as ionosphere disturbances and therefore it is important to pinpoint the problem accurately and rapidly. With the introduction of Trimble IonoGuard, an additional traffic light system has been added to the receiver web interface. A green, yellow, orange or red icon indicates the level of ionosphere disturbance that the RTK base station is experiencing on each satellite. The rover receiver shows this same information using the received IonoGuard base messages. All ionospheric data is logged in the standard Trimble T04 raw data files which can help Trimble support teams further diagnose issues. If IonoGuard messages are not being received from the base, then the circle symbols are replaced by squares and the rover's calculation of base ionosphere activity is indicated. A history of base ionospheric activity is also available on the base web interface. 11

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