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Location service based on satellite link depends heavily on weather conditions and on the surroundings. Especially in dense urban environment, depots or tunnels, the satellite signal is obstructed and limits the performance of standard GNSS, therefore, a reliable position of the vehicle is not guaranteed.
As more and more services rely on uninterrupted position information, the need for an additional mechanisms to improve the reliability is given.
Three‑Dimensional Dead Reckoning completes the standard GPS/GNSS navigation by combining the satellite signal with additional information from gyroscope, accelerometer, vehicle speed and direction. This is especially important when quick navigation decisions must be made immediately upon exiting tunnels and parking garages
NetModule devices with GNSS Dead Reckoning support act as an Inertial Measurement Unit(IMU) and provide a dead reckoning solution based on the u-blox NEO-M8L chipset.
Gyroscope and accelerometer are integrated in the chipset – there is no need to add additional sensors, cabling, … to the installation. This operation mode is called Untethered Dead Reckoning (UDR) mode and is supported as standard feature.
Attention: Enabling a misconfigured GNSS with dead reckoning will lead to unusable GNSS performance, even under clear sky with satellite reception!
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Head Over Mount | ||||
Front Wall | ||||
Rear Wall | ||||
Left Side | ||||
Right Side |