Once considered a necessity only in fully autonomous vehicles, lidar sensors are now being evaluated for lower-level driver-assistance systems.
Laser-based light detection and ranging (lidar) sensors were only recently thought to be applicable within the realm of fully automated vehicles (AVs). The spinning lidar “flowerpots” that grace the tops of AV prototypes, providing 360° point-cloud views and unmatched resolution are considered a vital sensing component of the driverless future. As that future continues to recede in the face of technical and regulatory hurdles, lidar's unique properties will migrate to lower-level advanced driver-assist systems (ADAS) [https://www.sae.org/news/2019/01/sae-updates-j3016-automated-driving-graphic], with ADAS and other features projected to benefit from lidar's acuity.
Typically part of a sensor suite that also leverages radar and cameras, lidar has unique characteristics that provide improved capability and redundancy. Unlike camera-based systems, lidar makes its own light and therefore requires no illumination to operate. Compared to radar, its main advantage is improved precision. Most manufacturers consider 360° lidar a necessity for fully automated systems, helping provide complete real-time environmental awareness to safely operate a vehicle. But targeted lidar sensors already are being exploited to provide additional safety and conveniences apart from high-level autonomy.
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Lidar Infiltrates ADAS
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