LIDAR: A Technology Overview and the Role of Diffuse Reflectance Targets in Testing & Calibrating Advanced Driver Assistance Systems (ADAS)
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LIDAR: A Technology Overview and the Role of Diffuse Reflectance Targets in Testing & Calibrating Advanced Driver Assistance Systems (ADAS)
- Author:
Russell Bailey, Greg McKee
Although Radar is a popular technology used in autonomous vehicle technologies, for example in adaptive cruise control systems, LIDAR is considered the sensor of choice in driver assisted cars when it comes to accuracy of mapping positions and distances, enabling detection of small objects and 3D imaging. It uses pulsed laser and solid-state light with time of flight sensing to measure distances. Characterization of LIDAR systems requires compensating the sensor response to the pulsed laser or solid-state light levels over a broad dynamic range of reflectance levels. This in turn requires the use of large area reflectance targets of known and stable reflectance. Labsphere’s Permaflect diffuse reflectance coated targets, ranging from 5% to 94% reflectance, enable automaker OEMS and their suppliers to characterise and calibrate their LIDAR systems over a broad range of environmental conditions.
