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Direct TOF Scanning LiDAR Sensor With Two-Step Multievent Histogramming TDC and Embedded Interference Filter | IEEE Journals & Magazine | IEEE Xplore

Direct TOF Scanning LiDAR Sensor With Two-Step Multievent Histogramming TDC and Embedded Interference Filter


Abstract:

This article presents a 36-channel scanning light detection and ranging (LiDAR) sensor with an on-chip single-photon avalanche diode array. The sensor has an area-efficie...Show More

Abstract:

This article presents a 36-channel scanning light detection and ranging (LiDAR) sensor with an on-chip single-photon avalanche diode array. The sensor has an area-efficient 11-bit in situ histogramming time-to-digital converter with a 3000 ×78 μm2 per channel area based on a mixed-signal accumulator, though it is incorporated with histogramming and filtering capabilities. Furthermore, owing to its embedded interference (IF) filter, the sensor can perform reliable direct time-of-flight measurements even with IF from 32 different LiDAR sensors. The LiDAR system also has a beam scanner that comprises dual laser diodes for IF elimination and a hybrid mirror such that high-resolution images with a resolution of 2200 ×36 can be acquired with a wide field-of-view of 120° ×8°.
Published in: IEEE Journal of Solid-State Circuits ( Volume: 56, Issue: 4, April 2021)
Page(s): 1022 - 1035
Date of Publication: 14 January 2021

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