World’s first multi-band GNSS receiver – with autonomous-driving precision and safety compliance

08 March 2018

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STMicroelectronics have introduced the world’s first multi-frequency sat-nav receiver chipset, suitable for safety-critical automotive applications and high accuracy positioning at the decimetre and centimetre-level.

Traditional in-car navigation systems help drivers reach their destinations using receivers and commercial satellite services that allow positioning – accurate to within a few metres. With increasing use of autonomous systems, such as lane-departure warning (LDW), adaptive cruise control (ACC), valet parking, and auto-pilot, greater accuracy is needed to ensure safety and reliability, in combination with proximity sensors (such as cameras, radar and LiDAR) to monitor the driving environment automatically. Fully self-driving vehicles of the future will also demand high-accuracy positioning.

By tracking satellites of all GNSS (Global Navigation Satellite System) constellations, GPS, GLONASS, Galileo, BeiDou, QZSS, and IRNSS simultaneously – on at least two of the frequencies used by each system (instead of one in other products), ST’s automotive-quality Teseo APP (automotive precise positioning) receiver provides high-quality raw GNSS data for a precise point positioning (PPP) and real-time kinematic (RTK) algorithm, which allows accurate positioning and rapid convergence time worldwide.

In addition to its high accuracy, the industry-unique receiver monitors the integrity of the satellite data to alert the system if accuracy is degraded for any reason. This permits Tier-1 manufacturers to certify safety-critical systems in accordance with the automotive industry functional-safety standard, ISO 26262, up to the highest Automotive Safety Integrity Level (ASIL). Teseo APP also integrates a secure microcontroller for secure system boot and data-output authentication to keep sensitive data safe from attack.

Launched alongside Teseo APP, ST’s Teseo V chip provides equivalent multi-frequency precise positioning in a simplified device for non-safety-critical applications, where integrity assurance is not required.

“High-accuracy satellite positioning makes autonomous driving safer, smoother, and more reliable,” said Antonio Radaelli, director of the Infotainment Business Unit at STMicroelectronics. “Our newest Teseo APP GNSS chip combines extreme accuracy and precision with industry-unique integrity assurance for use in safety-critical applications.”

ST is now supplying product samples to lead customers who are developing autonomous-driving systems, expected to appear first in high-end vehicles launched in 2020 or 2021.

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