SPAD Flash LiDAR with Chopped Analog Counter for 76m Range and 120klx Background Light

📋 论文概要

本文提出了一种采用斩波模拟计数器的SPAD Flash LiDAR传感器，解决了在强背景光（120klx）下实现76米长距离探测和高帧率的挑战。通过斩波技术有效抑制背景光干扰，实现了稳健的深度成像。

💡 主要创新点

• 提出斩波模拟计数器（Chopped Analog Counter）架构，通过周期性斩波和差分配置抑制背景光噪声，提升信噪比。
• 在120klx高背景光下实现76米探测距离，同时保持高帧率和高深度分辨率。
• 集成SPAD阵列与定制模拟计数电路，实现紧凑的Flash LiDAR系统。

🏷 关键词

📄 原文摘要

Korea 5 Samsung Electronics, Hwasung, Korea 1 2 Flash LiDAR sensors are becoming increasingly important in many automotive, space, and robotic applications. However, achieving long range, high depth resolution, and high frame rates simultaneously remains challenging, particularly under strong background light (BGL), as these requirements often conflict with each other [1,2]. To address the requirements, direct time-of-flight (dToF) sensors using single-photon avalanche diodes (SPADs) and integrated histogramming have been actively investigated, achieving good spatial resolution and moderate frame rate, but only under limited BGL conditions (10~30klx in [2,3]). In addition, the complexity of histogramming often results in large pixel pitch and small fill

👥 作者与机构

Hyun-Seung Choi1,2, Injun Park1,3, Byungchoul Park4, Dongseok Cho1,5,

Myung-Jae Lee1, Youngcheol Chae1,3 Yonsei University, Seoul, Korea Korea Institute of Science and Technology, Seoul, Korea 3 XO Semiconductor, Seoul, Korea 4 Myongji University, Yongin,