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DC Field | Value | Language |
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dc.citation.endPage | 22798 | - |
dc.citation.number | 23 | - |
dc.citation.startPage | 22785 | - |
dc.citation.title | IEEE SENSORS JOURNAL | - |
dc.citation.volume | 22 | - |
dc.contributor.author | Seo, Hyeongseok | - |
dc.contributor.author | Cho, Gihwan | - |
dc.contributor.author | Kim, Seong-Jin | - |
dc.contributor.author | Chun, Jung-Hoon | - |
dc.contributor.author | Choi, Jaehyuk | - |
dc.date.accessioned | 2023-12-21T13:14:00Z | - |
dc.date.available | 2023-12-21T13:14:00Z | - |
dc.date.created | 2022-12-09 | - |
dc.date.issued | 2022-12 | - |
dc.description.abstract | In this study, we have proposed a CMOS light detection and ranging (LiDAR) sensor with high immunity for background noise (BGN) and inter-LiDAR interference (IF). To mitigate pileup distortions that cause signal loss due to large BGN, we implemented multievent weighted histogramming time-to-digital converter (TDC) with 4×4 macro-pixels. The 11-bit two-step TDC and mixed-signal accumulator (MA) were utilized to implement histogramming with area efficiency. To overcome the limited dynamic range of histogram accumulation while preserving the maximum detectable range (MDR), a pre–post weighted histogram filter was implemented to detect only time-correlated time-of-flight (TOF) out of BGN from both sunlight and increased dark noise while enhancing sensitivity through higher excess voltage of single-photon avalanche diodes (SPADs). In addition, the infinite IF canceling (IIC) scheme that employs pulse-position modulation and time-difference modulation was designed to be compatible with the pre–post weighted histogram filter. For the IIC, the ON-chip SPAD-based random number generator provides a random code. A theoretical analysis of LiDAR performance such as MDR was introduced to prove the effectiveness of the pre-post weighted histogram filter. The fabricated sensor demonstrated 8.08-cm accuracy for a range of 32 m under high BGN (105-klx sunlight and 48.72-kcps dark-count rate with increased excess bias voltage) through the pre–post weighted histogram filter and IF immunity through the IIC scheme. | - |
dc.identifier.bibliographicCitation | IEEE SENSORS JOURNAL, v.22, no.23, pp.22785 - 22798 | - |
dc.identifier.doi | 10.1109/JSEN.2022.3217303 | - |
dc.identifier.issn | 1530-437X | - |
dc.identifier.scopusid | 2-s2.0-85141551244 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/60165 | - |
dc.identifier.wosid | 000893571900055 | - |
dc.language | 영어 | - |
dc.publisher | Institute of Electrical and Electronics Engineers | - |
dc.title | Multievent Histogramming TDC With Pre–Post Weighted Histogramming Filter for CMOS LiDAR Sensors | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Engineering, Electrical & Electronic;Instruments & Instrumentation;Physics, Applied | - |
dc.relation.journalResearchArea | Engineering;Instruments & Instrumentation;Physics | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Histogramming time-to-digital converter (TDC) | - |
dc.subject.keywordAuthor | interference (IF) canceling | - |
dc.subject.keywordAuthor | light detection and ranging (LiDAR) | - |
dc.subject.keywordAuthor | self-driving cars | - |
dc.subject.keywordAuthor | single-photon avalanche diode (SPAD) | - |
dc.subject.keywordPlus | IMAGE SENSOR | - |
dc.subject.keywordPlus | SOC | - |
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