ZED-F9K - Integration manual
2 System description
2.1 Overview
The ZED-F9K module features the u-blox F9 multi-band L1/L2 GNSS receiver with rapid
convergence time within seconds. This mass-market component provides decimeter level
positioning with high availability, while making use of all 4 GNSS constellations simultaneously.
It is the first dead reckoning module with an integrated inertial measurement unit (IMU) capable
of high precision positioning. The sophisticated built-in algorithms fuse the IMU data, GNSS
measurements, wheel ticks (or speed in m/s), and vehicle dynamics model to provide lane accurate
positioning where GNSS alone would fail. The module operates under open-sky motorways, in the
wooded countryside, in difficult urban environments, and even in tunnels and underground parking.
In modern automotive applications, such as advanced driver assistance system (ADAS) where
availability can improve the safety of our roads, ZED-F9K is the ultimate solution.
The device is a turnkey solution eliminating the technical risk of integrating third party libraries,
precise positioning engines, and the multi-faceted hardware engineering aspects of radio frequency
design and digital design. The u-blox approach provides a transparent evaluation of the positioning
solution, provides clear lines of responsibility for design support while reducing supply chain
complexity during production.
ZED-F9K is ideal for innovative automotive architecture designs with limited space and power.
The module provides accurate location services to the increasing number of intelligent electronic
control units (ECU) such as telematics control unit, navigation system, infotainment and V2x safety
systems.
In priority navigation mode the module reaches a navigation rate of up to 30 Hz. The on-board
processor augments fused GNSS position with additional IMU-based position estimates. Drivers
experience responsive, lag-free user interfaces. ZED-F9K can output raw IMU and raw GNSS data
for advanced applications.
The module supports a range of leading correction services. ZED-F9K comes with built-in support
for RTCM formatted OSR-type corrections, and in a future release, SSR-type corrections. SSR-
based techniques use data sparingly and are suitable for both IP-based cellular networks and
broadcast- based satellite connectivity. The unique combination ensures the reliable distribution
of correction services scalable to millions of vehicles using mobile network in populated areas and
satellites for remote areas.
ZED-F9K modules are manufactured in ISO/TS 16949 certified sites and are fully tested on a system
level. Qualification tests are performed as stipulated in the ISO 16750 standard: “road vehicles–
environmental conditions and testing for electrical and electronic equipment”.
2.1.1 Automotive dead reckoning (ADR)
Automotive dead reckoning (ADR) provides high-accuracy positioning in locations with poor or no
GNSS coverage. ADR is based on sensor fusion dead reckoning (SFDR) technology, which combines
multi-constellation GNSS measurements with the ZED-F9K's internal 6-axis IMU and wheel tick or
speed.
UBX-20046189 - R01
2 System description
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C1-Public
Early production information
