The MC-1612-DG, made by Locosys, is a single-band multi-system with an Arm base processor. It not only supports GPS, GLONASS, Galileo, QZSS and SBAS, but also has a Flash memory, TCXO, RTC crystal, LNA and SAW filter, in addition to embedded MEMS sensors (6-axis accelerometers gyros, 1-hole pressure as an option), and comes with dead-reckoning (DR) intelligence built in.
The extended Kalman filter algorithm combines GNSS (global navigation satellite system) and MEMS (micro electro-mechanical system) sensor data with a weighting function that relies on GNSS signal quality. With adverse GNSS conditions in urban canyons, tunnels, or parking garages, DR boosts the accuracy and the software fills the gaps. It supports three-dimensional DR, standard NMEA output, and fully supports various mapping demands.
In ADR mode, the module’s high-precision positioning and dead reckoning performance offers real-time heading and positioning data accurate to 1,5 m with low power consumption. The software includes features to receive and use data from the built-in sensors along with external signals for wheel speed and forward/reverse direction – these vehicle signals are used to provide a high level of accuracy in the navigation solution.
In UDR mode, when in an environment with pool signal like in a tunnel, ‘urban canyon’ or underground, in addition to a lack of speed feedback from the vehicle, the MC-1612-DG can continue to ascertain positioning thanks to its built-in MEMS sensing.
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