The Future of LiDAR Lies in ADAS

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Sensor tech delivers highly precise data more effectively for increased driver assistance.

www.eetasia.com/, Apr. 14, 2023 – 

The days of trustworthy autonomous driving are quickly approaching. Advanced driver-assistance systems (ADAS) need to deliver highly precise data more effectively for increased driver assistance if they are going to provide inclusive vehicle safety solutions. A very safe driving experience is delivered by light detection and ranging (LiDAR)-based ADAS systems, as well as vision- and radar-based sensors, which fully control the car by controlling speed and steering.

LiDAR is a light-based remote-sensing technology. Even though LiDAR can use ultraviolet, visible or near-infrared light, most systems use wavelengths in the infrared region of the electromagnetic radiation spectrum (typical values are 905, 1,550 or 1,064 nm, depending on the application and the material used for the detector/receiver).

LiDAR uses a laser-based light beam rather than radio electromagnetic waves to implement the traditional and straightforward radar concept. LiDAR systems use optical pulses to illuminate the target and acquire the reflected return signal, which is then analyzed to collect information like pulse power, round-trip time, phase shift and pulse width.

As shown in Figure 1, the principle used to calculate the distance between the source of the beam and an object is called time of flight (ToF).

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