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The VBOX 3iS is a compact GNSS-aided Inertial Navigation System that also utilises wheel speed data from the vehicle’s CAN bus.

In areas with limited or no satellite signal (such as tunnels or test tracks surrounded by trees), the VBOX 3iS can fill in the gaps for prolonged periods of time – allowing you to continue testing without having to worry about erroneous data.

The VBOX 3iS connects to your data logger via Serial or CAN and offers highly accurate position, speed, acceleration and attitude data in almost any environment. It is therefore an extremely cost-effective solution for ADAS validation and autonomous vehicle testing, and can also be used for conducting performance, braking and benchmarking tests.

For ADAS applications, connecting to another VBOX 3i RTK device enables the VBOX 3iS to act as a moving target and with RTK enabled, is capable of achieving 2 cm accuracy.

In areas with poor satellite visibility, such as in car parks, tunnels and dense, urban environments, combining wheel speed information with the GNSS and inertial data makes a huge improvement to the accuracy of the estimated speed and position.

As seen in this video, we were able to achieve sub 50 cm accuracy throughout the car park.

Thanks to a 100 Hz multi-constellation GNSS engine and the tracking of both the GPS and GLONASS networks of satellites, the VBOX 3iS ensures the accuracy of the data being captured even in restricted sky view conditions.

In this situation, the VBOX 3iS removes the need to fit expensive external wheel speed sensors that are difficult to fit and vulnerable to damage, by using the existing CAN bus information from the vehicle. Thanks to our comprehensive Vehicle CAN database, this is quick and easy to do as you can simply download the CAN file for each vehicle you are testing.