近红外激光雷达低噪声光电二极管探测方法  

Low Noise Photodiode Detection Method for Near-infrared LiDAR

作　　者：孙冬丽[1] 管海涛[2] SUN Dongli;GUAN Haitao(Wuhan Vocational College of Software and Engineering,Wuhan 430000,China;China Railway Siyuan Survey and Group Co.,Ltd.,Wuhan 430000,China)

机构地区：[1]武汉软件工程职业学院,湖北武汉430000 [2]中铁第四勘察设计院集团有限公司,湖北武汉430000

出　　处：《电工技术》2024年第12期61-64,共4页Electric Engineering

基　　金：武汉软件工程职业学院博士团队科技创新平台(自然科学与应用技术类)“激光应用技术协同创新中心平台”(编号BSPT2023002)。

摘　　要：光电二极管探测方法由于受暗电流、热噪声等因素的影响,其噪声水平较高,导致信噪比较低,为此研究近红外激光雷达低噪声光电二极管探测方法。深入分析光电二极管的频率响应特性,了解其响应速度、带宽以及噪声特性是优化探测性能的关键。设计合理的探测阵列编码策略,确定探测阵列的排布方式,确保信号完整性和提高空间分辨率。在光电二极管探测接收过程中,关注其灵敏度、动态范围以及暗电流性能等参数以确保实现探测。试验结果表明,近红外激光雷达低噪声光电二极管探测方法的探测信噪比为8,检测灵敏度较好。Due to factors such as dark current and thermal noise,the photodiode detection method has a high noise level,resulting in a low signal-to-noise ratio.Therefore a low noise photodiode detection method for near-infrared LiDAR is studied.In-depth analysis on the frequency response characteristics of photodiodes and deep understanding on their response speed,bandwidth,and noise characteristics,are the key to optimizing detection performance.A reasonable encoding strategy for the detection array is designed,the layout of the detection array is determined,which ensures signal integrity and improves spatial resolution.In the process of photodiode detection and reception,sensitivity,dynamic range,and dark current performance parameters should be monitored to ensure detection.The experimental results show that the signal-to-noise ratio of the low noise photodiode detection method for near-infrared LiDAR is 8,and the detection sensitivity is satisfactory.

关 键 词：近红外激光雷达 低噪声二极管 光电二极管 二极管探测 

分 类 号：TJ430[兵器科学与技术—火炮、自动武器与弹药工程]