Road corrections: Trimble provides PPP for autos

July 1, 2019  - By
Image: Trimble

Image: Trimble

Incorporating precise and consistent absolute location information is an essential component of enabling advanced driver assistance (ADAS) and autonomous driving (AD) technology for vehicles.

To help meet this need, Trimble recently released Trimble RTX Auto. The Trimble RTX Auto correction service provides a precise point position (PPP) solution that can be used to correct the position of any auto grade GNSS chipset. RTX Auto works in parallel with other on-vehicle sensors to deliver a positioning solution that satisfies ADAS and AD requirements.

Absolute position contributes to many features:

  • Lane centering. Systems designed to keep a car centered in a lane, relieving the driver of the task of steering, is often achieved with cameras and absolute position data. Absolute position can be used when lines disappear, or weather prevents them from being seen.
  • Map aiding. a combination of precise map and location data helps to navigate junctions, lane changes, roundabouts or intersections where lane information is essential to safe driving.
  • Prediction of future road structure. Both allow a vehicle to begin slowing in advance of a bend in the road and to avoid harsh braking that would happen if the system only relied on short range sensors.
  • Adhering to the speed limit. This helps drivers anticipate changes in speed limits when a downpour prevents cameras from seeing the speed limit signs or when they might be obscured by natural surroundings or another vehicle.

RTX Auto is both Automotive Safety Integrity Level (ASIL) and Automotive Software Process Improvement and Capability Determination (ASPICE) certified. These certifications validate that Trimble RTX Auto meets functional safety requirements for ADAS and autonomous applications in the auto industry.

Super Cruising. Trimble is on the road today providing RTX-based absolute positioning within General Motors’ Super Cruise driver assistance feature, a hands-free driving system for the freeway. For more information on Super Cruise, visit

See also Autonomous street sweeper relies on Unicore precision.

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