SPAD-Based LiDAR Sensor in 0.35 µm Automotive CMOS with Variable Background Light Rejection

Proceedings

F. Haase, Jan¹  Thattil, Charles²  Beer, Maik³  Ruskowski, Jennifer⁴ 

[1] Author to whom correspondence should be addressed.;Department of Electronic Components and Circuits, University Duisburg-Essen, 47057 Duisburg, Germany;Fraunhofer Institute for Microelectronic Circuits and Systems, 47057 Duisburg, Germany;Presented at the Eurosensors 2018 Conference, Graz, Austria, 9–12 September 2018

关键词: light detection;    ranging (LiDAR);    single-photon avalanche diode (SPAD);    range imaging;    time-of-flight (TOF);    background rejection;    photon coincidence;   

DOI  :  10.3390/proceedings2130749

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

We present a SPAD-based LiDAR sensor fabricated in an automotive certified 0.35 µm CMOS process. Since reliable sensor operation in high ambient light environment is a crucial factor in automotive applications, four SPADs are implemented in each pixel to suppress ambient light by the detection of photon coincidences. By pixel individual adjustment of the coincidence parameters to the present ambient light condition, an almost constant measurement performance is achieved for a wide range of different target reflectance and ambient illumination levels. This technique allows the acquisition of high dynamic range scenes in a single laser shot. For measurement and demonstration purpose a LiDAR camera with the developed sensor has been built.

【 授权许可】

CC BY