Radar technologies are a key for many driver assistance functions and especially for autonomous driving. Together with ultrasonic technologies and camera-based processes that use visible light or infrared radiation, radar sensors provide environmental information for automated driving functions. Compared to cameras, the radar is robust under poor visibility conditions. However, the sensors are not only important for the detection of the environment. They can also be used in the interior to detect critical driver conditions and monitor the interior situation for safety and comfort functions and to provide services.
Modern ADAS and AD systems require high-precision map data and highly accurate georeferenced 3D environmental models that serve as ground truth for the development and testing of assistance and automation systems.
In order to capture 3D environmental data as a basis for realistic simulations, a measurement vehicle with state-of-the-art laser measurement technology was set up at Fraunhofer ITWM. This multisensor measuring system REDAR (Road and Environment Data Acquisition Rover) consists of the following main components:
- Inertial system with DGPS and distance sensor
- 2 laser scanners
- 6 high-resolution cameras
The data collected with REDAR forms the basis for the VMC® Road and Scene Generator.