Trimble RTX technology plays key role in GM Super Cruise
Trimble announced details regarding General Motors' use of Trimble RTX (Real-Time eXtended) technology as the GNSS/GPS correction source to deliver positioning to vehicles equipped with GM's Super Cruise hands-free highway driving system, now available on the 2018 Cadillac CT6.
Trimble RTX enables semi-autonomous operations for passenger vehicles by delivering high-accuracy GNSS corrections via a global network to support absolute vehicle positioning in combination with other sensors and inertial dead-reckoning.
"Through our collaboration, the combined technologies of GM and Trimble will transform the way the world drives," said Patricia Boothe, Vice President of Trimble's Advanced Positioning Division. "Trimble RTX is now influencing how we interact with our vehicles and the environment around them—helping to minimize driver fatigue and improve the assisted driving experience."
Trimble RTX technology provides real-time, multi-constellation GNSS positioning that can reportedly achieve better than 1.5 in (38 mm) accuracy. Standard GPS signals can drift up to 25 ft (7.6 m), which could cause incorrect lane identification. Lane-level accuracy is a critical enabler in advanced driver assistance systems increasingly being used on highways. When used with high-definition maps, cameras, radar, and inertial sensors, the system improves lane-level positioning performance for semi-autonomous and autonomous vehicles.
The technology uses signals captured by more than 100 Trimble GNSS reference stations around the globe. Trimble RTX corrects the signals for atmospheric conditions, satellite orbit, and time synchronization errors and then sends those signals to GM vehicles with Super Cruise via OnStar 4G LTE cellular. The Trimble network is supported by redundant servers that are monitored 24/7 by a team of network engineers and IT specialists. To learn more about Trimble RTX for autonomous applications, visit: http://www.trimble.com/Positioning-Services/Trimble-RTX.aspx.