检索结果-南通市图书馆

Silicon-based optical phased array with a reconfigurable aperture for“gaze”scanning of LiDAR

在线全文

学校读者我要写书评

暂无评论

Photonics Research 2024年第5期12卷 932-940页

作者： HEMING HU YAFANG HE baisong chen ZIMING WANG YINGZHI LI QIJIE XIE QUANXIN NA ZIHAO ZHI XUETONG LI HUAN QU PATRICK LO JUNFENG SONG State Key Laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchun 130012China Peng cheng Laboratory Shenzhen 518000China Advance Micro Foundry Pte.Ltd. Singapore 117685Singapore

Light detection and ranging(LiDAR)serves as one of the key components in the fields of autonomous driving,surveying mapping,and environment ***,dense points clouds are pursued by LiDAR systems to provide high-definition 3D ***,the LiDAR is typically used to produce abundant yet redundant data for scanning the homogeneous background of scenes,resulting in power waste and excessive processing ***,it is highly desirable for a LiDAR system to“gaze”at the target of interest by dense scanning and rough sparse scans on the uninteresting ***,we propose a LiDAR structure based on an optical phased array(OPA)with reconfigurable apertures to achieve such a gaze scanning *** virtue of the cascaded optical switch integrated on the OPA chip,a 64-,128-,192-,or 256-channel antenna can be selected discretionarily to construct an aperture with variable *** corresponding divergence angles for the far-field beam are 0.32°,0.15°,0.10°,and 0.08°,*** reconfigurable-aperture OPA enables the LiDAR system to perform rough scans via the large beam spots prior to fine scans of the target by using the tiny beam *** this way,the OPA-based LiDAR can perform the“gaze”function and achieve full-range scanning *** scanning time and power consumption can be reduced by 1/4 while precise details of the target are ***,we embed the OPA into a frequency-modulated continuous-wave(FMCW)system to demonstrate the“gaze”function in beam *** results show that the number of precise scanning points can be reduced by 2/3 yet can obtain the reasonable outline of the *** reconfigurable-aperture OPA(RA-OPA)can be a promising candidate for the applications of rapid recognition,like car navigation and robot vision.

关键词： reconfigurable optical antenna

面向激光雷达的硅基光学相控阵芯片及其探测方法的研究进展(特邀)

在线全文

学校读者我要写书评

暂无评论

光学学报 2024年第15期44卷 452-471页

作者：胡鹤鸣李杰陈柏松支自毫李雪童屈欢王维鹏陶敏李盈祉宋俊峰吉林大学电子科学与工程学院吉林长春130012

介绍了光学相控阵的工作原理,就硅基光学相控阵芯片的研究进展进行回顾,对芯片的性能参数进行对比分析,并对基于光学相控阵的各类全固态激光雷达系统的发展现状进行介绍。最后指出了光学相控阵技术的瓶颈,并对硅基光学相控阵芯片未来的... 详细信息

介绍了光学相控阵的工作原理,就硅基光学相控阵芯片的研究进展进行回顾,对芯片的性能参数进行对比分析,并对基于光学相控阵的各类全固态激光雷达系统的发展现状进行介绍。最后指出了光学相控阵技术的瓶颈,并对硅基光学相控阵芯片未来的发展研究趋势进行了思考和展望。

关键词：光学相控阵硅基光电集成波导光栅天线全固态激光雷达

LncRNA NKILA inhibits HBV replication by repressing NF-κB signalling activation

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Virologica Sinica 2024年第1期39卷 44-55页

作者： Xi Zhang Yuanyuan Li chen Huan Yubao Hou Rujia Liu Hongyun Shi Peng Zhang baisong Zheng Yingchao Wang Hong Wang Wenyan Zhang Institute of Virology and AIDS Research The First Hospital of Jilin UniversityChangchun130012China Department of Ophthalmology The First Hospital of Jilin UniversityChangchun130012China Hepatobiliary Pancreatic Surgery The First Hospital of Jilin UniversityChangchun130012China

Hepatitis B virus(HBV)infection results in liver cirrhosis and hepatocellular carcinoma(HCC).HBx/nuclear factor(NF)-κB pathway plays a role in HBV ***,whether NF-κB-interacting long noncoding RNA(NKILA),a suppressor of NF-κB activation,regulates HBV replication remains largely *** this study,gain-and-loss experiments showed that NKILA inhibited HBV replication by inhibiting NF-κB *** turn,HBV infection down-regulated NKILA *** addition,expression levels of NKILA were lower in the peripheral blood-derived monocytes(PBMCs)of HBV-positive patients than in healthy individuals,which were correlated with HBV viral *** a negative correlation between NKILA expression level and HBV viral loads was observed in blood serum from HBV-positive *** levels of endogenous NKILA were also observed in HepG2 cells expressing a 1.3-fold HBV genome,HBV-infected HepG2-NTCP cells,stable HBV-producing HepG2.2.15 and HepAD38 cells,compared to those HBV-negative ***,HBx was required for NKILA-mediated inhibition on HBV *** decreased HBx-induced NF-κB activation by interrupting the interaction between HBx and p65,whereas NKILA mutants lack of essential domains for NF-κB inhibition,lost the ability to inhibit HBV ***,our data demonstrate that NKILA may serve as a suppressor of HBV replication via NF-κB signalling.

关键词： LncRNA NF-κB-interacting longnoncoding RNA(NKILA) NF-ĸB signalling ChronichepatitisBvirus(HBV) Viral replication HBx

基于0-1整数线性规划的军事空运装载优化算法

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

西南交通大学学报 2011年第3期46卷 500-505页

作者：孟冲宋华文陈柏松装备指挥技术学院装备指挥系北京101416 空军航空大学航空机械工程系吉林长春130022

为了高效地制定军事空运装载方案,在分析空运物资和载机货舱特点的基础上,构建了6种待装物资类型模式和6种承载空间物资布局模式,将三维空运装载问题转化为二维装载问题,建立了军事空运装载问题的数学模型.通过构建空间布局转化模式,将... 详细信息

为了高效地制定军事空运装载方案,在分析空运物资和载机货舱特点的基础上,构建了6种待装物资类型模式和6种承载空间物资布局模式,将三维空运装载问题转化为二维装载问题,建立了军事空运装载问题的数学模型.通过构建空间布局转化模式,将空间布局约束转换成0-1整数线性约束,实现了对0-1整数线性规划空运装载问题的求解.仿真结果表明:该算法运算时间不超过1 s,装载方案平均载重率达38.8%,平均有效空间利用率达59.7%.

关键词：军事装备物资装载方案 0-1整数线性规划空运

On-chip generation of Bessel–Gaussian beam via concentrically distributed grating arrays for long-range sensing

在线全文

学校读者我要写书评

暂无评论

Light(Science & Applications) 2023年第5期12卷 817-825页

作者： Zihao Zhi Quanxin Na Qijie Xie baisong chen Yingzhi Li Xiaobin Liu Xuetong Li Lijun Wang Guoqiang Lo Junfeng Song State Key Laboratory on Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchun 130012China Peng cheng Laboratory Shenzhen 518000China State Key Laboratory of Luminescence and Application Changchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesChangchun 130033China Advance Micro Foundry Pte.Ltd. 11 Science Park RoadScience Park II 117685Singapore

Bessel beam featured with self-healing is essential to the optical sensing applications in the obstacle scattering *** on-chip generation of the Bessel beam outperforms the conventional structure by small size,robustness,and alignment-free ***,the maximum propagation distance(Z_(max))provided by the existing approaches cannot support long-range sensing,and thus,it restricts its potential *** this work,we propose an integrated silicon photonic chip with unique structures featured with concentrically distributed grating arrays to generate the Bessel-Gaussian beam with a long propagation *** spot with the Bessel function profile is measured at 10.24m without optical lenses,and the photonic chip’s operation wavelength can be continuously performed from 1500 to 1630 *** demonstrate the functionality of the generated Bessel-Gaussian beam,we also experimentally measure the rotation speeds of a spinning object via the rotational Doppler Effect and the distance through the phase laser ranging *** maximum error of the rotation speed in this experiment is measured to be 0.05%,indicating the minimum error in the current *** the compact size,low cost,and mass production potential of the integrated process,our approach is promising to readily enable the Bessel-Gaussian beam in widespread optical communication and micro-manipulation applications.

关键词： scattering Bessel beam

Wide-steering-angle high-resolution optical phased array

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Photonics Research 2021年第12期9卷 2511-2518页

作者： YINGZHI LI baisong chen QUANXIN NA QIJIE XIE MIN TAO LANXUAN ZHANG ZIHAO ZHI YUXUAN LI XIAOBIN LIU XIANSHU LUO GUOQIANG LO FENGLI GAO XUEYAN LI JUNFENG SONG State Key Laboratory on Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchun 130012China Peng cheng Laboratory Shenzhen 518000China Advance Micro Foundry Pte.Ltd. Singapore 117685Singapore

Optical phased array(OPA)technology is considered a promising solution for solid-state beam steering to supersede the traditional mechanical beam *** a key component of the LIDAR system for long-range detection,OPAs featuring a wide steering angle and high resolution without beam aliasing are highly ***,a wide steering range requires a waveguide pitch less than half of the wavelength,which is easily subjected to cross ***,high resolution requires a large aperture,and it is normally achieved by a high count number of waveguides,which complicates the control *** solve the mentioned issues,we design two high-performance 128-channel OPAs fabricated on a multilayered SiN-on-SOI *** to the nonuniform antenna pitch,only 128 waveguides are used to achieve a 4 mm wide ***,by virtue of innovative dual-level silicon nitride(Si_(3)N_(4))waveguide grating antennas,the fishbone antenna OPA achieves a 100°×19.4°field of view(FOV)with divergence of 0.021°×0.029°,and the chain antenna OPA realizes a 140°×19.23°FOV with divergence of 0.021°×0.1°.To our best knowledge,140°is the widest lateral steering range in two-dimensional OPA,and 0.029°is the smallest longitudinal ***,we embed the OPA into a frequency-modulated continuous-wave system to achieve 100 m distance *** reflected signal from 100 m distance is well detected with 26 dBm input transmitter power,which proves that OPA serves as a promising candidate for transceiving optical signal in a LIDAR system.

关键词： antenna waveguide resolution

Three-terminal germanium-on-silicon avalanche photodiode with extended p-charge layer for dark current reduction

在线全文

学校读者我要写书评

暂无评论

Photonics Research 2022年第8期10卷 1956-1963页

作者： XIAOBIN LIU XUETONG LI YUXUAN LI YINGZHI LI ZIHAO ZHI MIN TAO baisong chen LANXUAN ZHANG PENGFEI GUO GUOQIANG LO XUEYAN LI FENGLI GAO BONAN KANG JUNFENG SONG State Key Laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchun 130012China Advance Micro Foundry Pte Ltd Singapore 117685Singapore Peng cheng Laboratory Shenzhen 518000China

Germanium-on-silicon(Ge-on-Si) avalanche photodiodes(APDs) are widely used in near-infrared detection, laser ranging, free space communication, quantum communication, and other fields. However, the existence of lattice defects at the Ge/Si interface causes a high dark current in the Ge-on-Si APD, degrading the device sensitivity and also increasing energy consumption in integrated circuits. In this work, we propose a novel surface illuminated Ge-on-Si APD architecture with three terminals. Besides two electrodes on Si substrates, a third electrode is designed for Ge to regulate the control current and bandwidth, achieving multiple outputs of a single device and reducing the dark current of the device. When the voltage on Ge is -27.5 V, the proposed device achieves a dark current of 100 n A, responsivity of 9.97 A/W at -40 d Bm input laser power at 1550 nm, and optimal bandwidth of 142 MHz. The low dark current and improved responsivity can meet the requirements of autonomous driving and other applications demanding weak light detection.

关键词： avalanche charge driving

在线全文

学校读者我要写书评

暂无评论

基于RBF神经网络的自动驾驶仪故障诊断

数据采集与处理 2006年第B12期21卷 161-164页

作者：张阔陈柏松吕英军孙波空军航空大学航空机械工程系长春130022

介绍了自动驾驶仪的基本工作原理和径向基函数(RBF)神经网络基本结构,提出了基于径向基函数神经网络在某型自动驾驶仪故障诊断中的应用方法,并运用Matlab神经网络工具包对该神经网络模型进行训练和仿真测试,结果表明RBF网络有较高诊断... 详细信息

介绍了自动驾驶仪的基本工作原理和径向基函数(RBF)神经网络基本结构,提出了基于径向基函数神经网络在某型自动驾驶仪故障诊断中的应用方法,并运用Matlab神经网络工具包对该神经网络模型进行训练和仿真测试,结果表明RBF网络有较高诊断正确率,且能满足实时诊断的要求。

关键词： RBF神经网络自动驾驶仪故障诊断

不同运动功能分级脑瘫患儿步态分析中时-空与运动学参数的对比研究

在线全文

学校读者我要写书评

暂无评论

临床小儿外科杂志 2022年第6期21卷 510-515页

作者：陈柏松应灏陈梦婕上海市儿童医院上海交通大学医学院附属儿童医院骨科上海200062

目的比较2019年3月至2021年3月上海市儿童医院骨科收治的不同运动功能分级脑瘫患儿步态分析中时-空与运动学参数的差异,探索通过三维步态分析中时-空与运动学参数来定量评价痉挛型脑瘫患儿下肢运动功能,为痉挛型脑瘫的病情评估提供客观... 详细信息

目的比较2019年3月至2021年3月上海市儿童医院骨科收治的不同运动功能分级脑瘫患儿步态分析中时-空与运动学参数的差异,探索通过三维步态分析中时-空与运动学参数来定量评价痉挛型脑瘫患儿下肢运动功能,为痉挛型脑瘫的病情评估提供客观定量方法。方法选取年龄6~12岁、经粗大运动功能分级系统(gross motor function classification system,GMFCS)分级为Ⅰ、Ⅱ、Ⅲ级的痉挛型脑瘫患儿为研究对象,共90例,GMFCS分级为Ⅰ级(Ⅰ级组)、Ⅱ级(Ⅱ级组)、Ⅲ级(Ⅲ级组)各30例。选取30例正常儿童作为正常对照组。通过三维步态分析系统采集90例脑瘫患儿和正常对照组儿童步态分析中的时-空与运动学参数,利用方差分析和多样本均数间多重比较,分析不同运动功能分级脑瘫患儿之间以及与正常对照组儿童之间的差异。结果脑瘫患儿步态分析时-空参数中步长、步宽、步速、步频、跨步长较正常对照组儿童明显减小(P0.05)。结论步态分析中时-空参数和运动学参数可以定量评估痉挛型脑瘫患儿的下肢运动功能。GMFCS分级越高的脑瘫患儿与正常儿童之间的差异越大,下肢的运动功能越差。

关键词：脑性瘫痪/并发症肌痉挛状态/并发症运动活动下肢步态评价研究