Modeling and Analysis of Noise Reduction Method in SPAD-Based LiDAR System

被引：1

作者：

Ma, Kai ^{[1
,2
]}

Yin, Tao ^{[1
,2
]}

Tian, Na ^{[1
,2
]}

Wang, Zhe ^{[1
,2
]}

Zhao, Tian ^{[1
,2
]}

Liu, Jian ^{[1
,2
]}

Wu, Nanjian ^{[1
,2
]}

Liu, Liyuan ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Inst Semicond, State Key Lab Superlatt & Microstruct, Beijing 100083, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 101408, Peoples R China

来源：

IEEE PHOTONICS JOURNAL | 2023年 / 15卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Photonics; Single-photon avalanche diodes; Sensors; Laser radar; Power lasers; Mathematical models; Laser modes; Behavioral model; multi-event mode; SPAD; time of flight(ToF); time-gating mode;

D O I：

10.1109/JPHOT.2023.3331384

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Ambient light interference stands as the primary source of noise encountered by the light detection and ranging (LiDAR) systems based on single-photon avalanche diode (SPAD), which seriously restricts the detection range and accuracy of sensors. Multi-event mode and time-gating method are extensively employed due to their effective suppression ability of the ambient light interference with easily implemented circuit structure. However, the current research on these two operational modes is limited to qualitative description, lacking a comprehensive theoretical analysis. This paper investigates the impact of the multi-event mode and time-gating method on enhancing the imaging capabilities of the sensor, employing a probability distribution perspective. A behavioral model is established, enabling the simulation of the comprehensive functionality of a SPAD-based LiDAR system in either first-hit mode or multi-event mode, including the histogramming, coincident detection, time- gating functions. The model can serve as a substitute for the actual circuit in system function validation and parameter optimization, thereby significantly reducing the design and simulation cycle.

引用

页码：1 / 9

页数：9