GNSS module boasts decimetre level accuracy
Continuous lane accurate positioning is afforded by the ZED-F9K global navigation satellite system (GNSS) and dead-reckoning module for urban environments. According to u-blox, it improves positioning performance x10 over standard precision technology.
The multi-band GNSS module has built-in inertial sensors. The module combines GNSS receiver technology, signal processing algorithms, and correction services to deliver down to decimeter-level accuracy within seconds, says u-blox. This addresses the evolving needs of advanced driver assisted systems (ADAS) and automated driving markets.
The ZED-F9K high precision dead reckoning module builds on the u‑blox F9 technology. Compatibility with modern GNSS correction services improves positioning accuracy by compensating ionospheric and other errors. The multi-band, multi-constellation real time kinematics (RTK) receiver module receives GNSS signals from all orbiting GNSS constellations. A greater number of visible satellites improves positioning in partially obstructed conditions, while increased satellite signal diversity delivers faster convergence times when signals are interrupted to improve navigation.
Inertial sensors integrated into the module constantly monitor changes in the moving vehicle’s trajectory and deliver lane accurate positioning when satellite signals are partially or completely obstructed, for example when the vehicle is in covered parking areas, tunnels, urban canyons, or wooded areas. When satellite signals become available again, the module combines inertial sensor data with GNSS signals to deliver fast convergence times and high availability of the decimeter-level solution.
The ZED‑F9K’s accuracy and low latency means it also applies to automotive OEMs and Tier 1s developing vehicle-to-everything (V2X) communication systems.
Samples will be available upon request by July 2019.