检索结果-内蒙古大学图书馆

Research Square 2021年

作者： Qiwen, Zhang Honglei, Chen Ruijun, Ding Key Laboratory of Infrared Imaging Materials and Detectors Shanghai Institute of Technology Physics Chinese Academy of Sciences Shanghai200083 China University of Chinese Academy of Sciences Beijing100049 China

HgCdTe avalanche photodiode (APD) is a frontier research on infrared focal plane technology, High-precision time stamp readout circuit is the basis of the APD focal plane at 77 K, which directly affects APD infrared focal plane performance. Time-to-digital conversion circuit (TDC) is one of the methods to achieve high-precision time stamping. Based on the analysis of MOSFET at low temperature, our design a vernier TDC circuit, which uses a synchronous counter to quantize an integer multiple of the period to achieve a coarse count of 6 bits;The on-chip PLL multiplied high-frequency clock has high-precision and high PVT characteristics, using it to quantify the part that is less than one clock cycle to achieve a fine-count of 6 bits output. The circuit adopts standard CMOS process tape out, our circuit works at a master-frequency of 120 MHz. At 77 K, the circuit test can distinguish the time resolution of 236.280 ps. The DNL is within -0.54~0.71 LSB, and INL is within -1.32~1.21 LSB. © 2021, CC BY.

关键词： Timing circuits

来源：评论

学校读者我要写书评

暂无评论

Super-resolution Reconstruction Algorithm for Depth Image Based on Fractional Calculus

Super-resolution Reconstruction Algorithm for Depth Image Ba...

引用

第35届中国控制与决策会议

作者： Tingsheng Huang Xinjian Wang Chunyang Wang Xuelian Liu Yanqing Yu Wenqian Qiu School of Electronic and Information Engineering Changchun University of Science and Technology Xi'an Key Laboratory of Active Photoelectric Imaging Detection Technology Xi'an Technological University College of Photonic and Electronic Engineering Fujian Normal University

This study presents a new method for superresolution of depth images by combining fractional calculus and inverse distance *** method improves edge recognition through fractional differential and solves the problem of missing data in traditional super-resolution algorithms for depth *** show that the proposed method outperforms classical interpolation algorithms,with improved PSNR by 3-10 *** method effectively solves the impact of depth image edge distance on interpolation results,and provides more texture information.

关键词：

来源：评论

学校读者我要写书评

暂无评论

A simple Bessel module with tunable focal depth and constant resolution for commercial two-photon microscope

引用

Journal of Innovative Optical Health Sciences 2023年第4期16卷 150-159页

作者： Ting Mo Yiran Liu Fatao Bie Zimin Dai Jin Chang Hui Gong Wei Zhou Britton Chance Center and MoE Key Laboratory for Biomedical Photonics Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology Wuhan P.R.China MoE Key Laboratory for Biomedical Photonics Collaborative Innovation Center for Biomedical Engineering School of Engineering Sciences Huazhong University of Science and Technology Wuhan Hubei 430074P.R.China Research Unit of Multimodal Cross Scale Neural Signal Detection and Imaging Chinese Academy of Medical Sciences HUST-Suzhou Institute for Brainsmatics JITRI Suzhou P.R.China

The volumetric imaging of two-photon microscopy expands the focal depth and improves the throughput,which has unparalleled superiority for three-dimension samples,especially in ***,emerging in volumetric imaging is still largely customized,which limits the integration with commercial two-photon ***,we analyzed the key parameters that modulate the focal depth and lateral resolution of polarized annular imaging and proposed a volumetric imaging module that can be directly integrated into commercial two-photon systems using conventional optical *** design incorporates the beam diameter adjustment settings of commercial two-photon systems,allowing flexibility to adjust the depth of focus while maintaining the same lateral ***,the depth range and lateral resolution of the design were verified,and the imaging throughput was demonstrated by an increase in the number of imaging neurons in the awake mouse cerebral cortex.

关键词： Volumetric imaging Bessel beam two-photon microscopy

来源：评论

学校读者我要写书评

暂无评论

Advances in nuclear detection and readout techniques

引用

Nuclear Science and Techniques 2023年第12期34卷 281-358页

作者： Rui He Xiao‑Yang Niu Yi Wang Hong‑Wei Liang Hong‑Bang Liu Ye Tian Hong‑Lin Zhang Chao‑Jie Zou Zhi‑Yi Liu Yun‑Long Zhang Hai‑Bo Yang Ju Huang Hong‑Kai Wang Wei‑Jia Han Bei Cao Gang Chen Cong Dai Li‑Min Duan Rui‑Rui Fan Fang‑Fa Fu Jian‑Hua Guo Dong Han Wei Jiang Xian‑Qin Li Xin Li Zhuo‑Dai Li Yu‑Tie Liang Shun Liao De‑Xu Lin Cheng‑Ming Liu Guo‑Rui Liu Jun‑Tao Liu Ze Long Meng‑Chen Niu Hao Qiu Hu Ran Xiang‑Ming Sun Bo‑Tan Wang Jia Wang Jin‑Xiang Wang Qi‑Lin Wang Yong‑Sheng Wang Xiao‑Chuan Xia Hao‑Qing Xie He‑Run Yang Hong Yin Hong Yuan Chun‑Hui Zhang Rui‑Guang Zhao Ran Zheng Cheng‑Xin Zhao Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China Advanced Energy Science and Technology Guangdong Laboratory Huizhou 516000China Key Laboratory of Particle and Radiation Imaging Department of Engineering PhysicsTsinghua UniversityBeijing 100084China School of Integrated Circuits Dalian University of TechnologyDalian 116020China Guangxi Key Laboratory for Relativistic Astrophysics School of Physical Science and TechnologyGuangxi UniversityNanning 530004China School of Nuclear Science and Technology Lanzhou UniversityLanzhou 730000China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China Department of Radiation Oncology National Cancer Center/National Clinical Research Center for Cancer/Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100021China Electronic Engineering School Heilongjiang UniversityHarbin 150080China Spallation Neutron Source Science Center Dongguan 523803China Micro‑electronic Department Harbin Institute of TechnologyHarbin 150001China Purple Mountain Observatory Chinese Academy of SciencesNanjing 210034China Liaoning Academy of Materials Shenyang 110167China Istituto Nazionale di Fisica Nucleare Sezione di PerugiaPerugiaItaly School of Mathematics and Physics Chengdu University of TechnologyChengdu 620035China PLAC Key Laboratory of Quark and Lepton Physics(MOE)Central China Normal UniversityWuhan 430079China School of Electronics and Information Northwestern Polytechnical UniversityXi’an 710129China State Key Lab of Superhard Materials College of PhysicsJilin UniversityChangchun 130012China School of Computer Science Northwestern Polytechnical UniversityXi’an 710129China

“A Craftsman Must Sharpen His Tools to Do His Job,”said *** detection and readout techniques are the foundation of particle physics,nuclear physics,and particle astrophysics to reveal the nature of the ***,they are being increasingly used in other disciplines like nuclear power generation,life sciences,environmental sciences,medical sciences,*** article reviews the short history,recent development,and trend of nuclear detection and readout techniques,covering Semiconductor Detector,Gaseous Detector,Scintillation Detector,Cherenkov Detector,Transition Radiation Detector,and Readout *** explaining the principle and using examples,we hope to help the interested reader underst and this research field and bring exciting information to the community.

关键词： Silicon detector Wide bandgap detector Time projection chamber(TPC) Multigap resistive plate chamber detector(MRPC) Scintillation detector Calorimeters Cherenkov detector Transition radiation detector Artificial intelligence Trigger-less readout

来源：评论

学校读者我要写书评

暂无评论

Dual-symmetry-perturbed all-dielectric resonant metasurfaces for high-Q perfect light absorption

引用

Chinese Optics Letters 2024年第2期22卷 200-206页

作者：葛俊洋高一骁徐雷周宁沈祥 Laboratory of Infrared Materials and Devices Research Institute of Advanced TechnologiesNingbo UniversityNingbo 315211China Key Laboratory of Photoelectric Detection Materials and Devices of Zhejiang Province Ningbo 315211China Advanced Optics&Photonics Laboratory Department of EngineeringSchool of Science and TechnologyNottingham Trent UniversityNottingham NG118NSUK School of Physics and Optoelectronic Engineering Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesHangzhou 310024China Ningbo Institute of Oceanography Ningbo 315832China

We demonstrate a high-Q perfect light absorber based on all-dielectric doubly-resonant *** bound states in the continuum(BICs)protected by different symmetries,we manage to independently manipulate the Q factors of the two degenerate quasi-BICs through dual-symmetry perturbations,achieving precise matching of the radiative and nonradiative Q factors for degenerate critical *** achieve a narrowband light absorption with a>600 Q factor and a>99%absorptance atλ_(0)=1550 nm on an asymmetric germanium metasurface with a 0.2λ_(0)*** work provides a new strategy for engineering multiresonant metasurfaces for narrowband light absorption and nonlinear applications.

关键词： resonant metasurface perfect light absorption bound states in the continuum

来源：评论

学校读者我要写书评

暂无评论

Research on the Dynamic Point Cloud Alignment Method of Lidar Based on Posture Correction

Research on the Dynamic Point Cloud Alignment Method of Lida...

引用

Academic International Symposium on Optoelectronics and Microelectronics technology (AISOMT)

作者： Tao Peng Wei Lu Xin Zhou Jianfeng Sun Bingqing Xu Yaojun Li Le Ma Hongchao Ni National Key Laboratory of Laser Spatial Information Harbin Institute of Technology Harbin Heilongjiang China Zhengzhou Research Institute Harbin Institute of Technology Zhengzhou Henan China Shanghai Aerospace Control Technology Institute Shanghai China Infrared Detection Technology Research & Development Center of CASC Shanghai China

ISBN: (数字)9798331542283

ISBN: (纸本)9798331542290

The GM-APD LiDAR system offers a number of advantages, including high sensitivity, an extended detection range and high distance resolution. However, the field of view is constrained by the operational principle, which necessitates the utilization of multi-pulse data for the reconstruction of the target. It is therefore important to consider the impact of the Gm-APD LiDAR's motion process on the resulting imaging in the context of large-scale scene scanning. The 64×64 APD array is unable to extract sufficient and effective point cloud features. The traditional feature-based alignment method is unable to achieve point cloud alignment. To resolve this issue, a system based on the combination of LiDAR and inertial guidance has been designed. This system utilizes position, attitude and scanning angle to reduce the dynamic effects during LiDAR scanning and achieve dynamic point cloud alignment.

关键词： Point cloud compression Laser radar Image resolution Sensitivity Feature extraction Vectors Sensor systems Sensors Microelectronics Image reconstruction

来源：评论

学校读者我要写书评

暂无评论

Performance-based Reliability Prediction of Power Supply Considering Degradation Uncertainties

Performance-based Reliability Prediction of Power Supply Con...

引用

System Reliability and Safety Engineering (SRSE), International Conference on

作者： Hao Niu Shaohua Yang Wenyuan Liao Canxiong Lai Wen Sun Science and Technology on Reliability Physics and Application of Electronic Component Laboratory No.5 Electronics Research Institute of Ministry of Industry and Information Technology (MIIT) Guangzhou China Key Laboratory of Infrared Imaging Materials and Detectors Shanghai Institute of Technical Physics Shanghai China

ISBN: (纸本)9781665401616

Reliability prediction is an effective approach to find weak links and evaluate whether the product satisfies its reliability requirement during the design phase. For the highly reliable product, it is far difficult to predict its reliability level according to the traditional method that largely relies on historical data from reliability handbooks. This paper proposes a performance-based reliability prediction method, which makes use of degradation to reflect product's health conditions. Additionally, a degradation model considering multivariate uncertainties such as operation conditions and parameter randomness is proposed to describe soft failures induced by degradation. A case study of power supply is illustrated to show the effectiveness and feasibility of the proposed method and degradation model for reliability prediction.

关键词： Degradation Uncertainty Power supplies Sensitivity analysis Predictive models Maintenance engineering Reliability engineering

来源：评论

学校读者我要写书评

暂无评论

Patch-based Object Tracking via Locality-constrained Linear Coding

Patch-based Object Tracking via Locality-constrained Linear ...

引用

第35届中国控制会议

作者： Kunqi Gu Mingna Liu Tao Zhou Fanghui Liu Xiangjian He Jie Yang Yu Qiao Institute of Image Processing and Pattern Recognition Shanghai Jiao Tong University Shanghai Institute of Spaceflight Control Technology Infrared Detection Technology Research and Development Center China Aerospace Science and Technology Corporation School of Computing and Communications University of Technology The Key Laboratory of Ministry of Education for System Control and Information Processing

ISBN: (纸本)9781509009107

In this paper,the Locality-constrained Linear Coding(LLC) algorithm is incorporated into the object tracking ***,we extract local patches within a candidate and then utilize the LLC algorithm to encode these *** on these codes,we exploit pyramid max pooling strategy to generate a richer feature *** feature histogram which integrates holistic and part-based features can be more discriminative and ***,an occlusion handling strategy is utilized to make our tracker more ***,an efficient graph-based manifold ranking algorithm is exploited to capture the relevance between target templates and *** tracking,target templates are taken as labeled nodes while target candidates are taken as unlabeled nodes,and the goal of tracking is to search for the candidate that is the most relevant to existing labeled nodes by manifold ranking *** on challenging video sequences have demonstrated the superior accuracy and robustness of the proposed method in comparison to other state-of-the-art baselines.

关键词： object tracking LLC pyramid max-pooling local appearance model manifold ranking

来源：评论

学校读者我要写书评

暂无评论

CAMSAP2 and CAMSAP3 localize at microtubule intersections to regulate the spatial distribution of microtubules

引用

Journal of Molecular Cell Biology 2023年第8期15卷 28-39页

作者： Rui Zhang Lusheng Gu Wei Chen Nobutoshi Tanaka Zhengrong Zhou Honglin Xu Tao Xu Wei Ji Xin Liang Wenxiang Meng State Key Laboratory of Molecular Developmental Biology Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeĳing 100101China College of Advanced Agricultural Sciences University of Chinese Academy of SciencesBeĳing 100049China National Laboratory of Biomacromolecules CAS Center for Excellence in BiomacromoleculesInstitute of BiophysicsChinese Academy of SciencesBeĳing 100101China Innovation Center of Optical Imaging and Detection Technology R&D Bioland Laboratory(Guangzhou Regenerative Medicine and Health Guangdong Laboratory)Guangzhou 510320China IDG/McGovern Institute for Brain Research Tsinghua–Peking Joint Center for Life ScienceSchool of Life SciencesTsinghua UniversityBeĳing 100084China Laboratory for Cell Adhesion and Tissue Patterning RIKEN Center for Developmental Biology/RIKEN Center for Biosystems Dynamics Research650-0047 KobeJapan Innovation Academy for Seed Design Chinese Academy of SciencesBeĳing 100101China

Microtubule networks support many cellular processes and exhibit a highly ordered ***,due to the limited axial resolution of conventional light microscopy,the structural features of these networks cannot be resolved in three-dimensional(3D)***,we used customized ultra-high-resolution interferometric single-molecule localization microscopy to characterize the microtubule networks in Caco2 *** found that the calmodulin-regulated spectrin-associated proteins(CAMSAPs)localize at a portion of microtubule *** investigation showed that depletion of CAMSAP2 and CAMSAP3 leads to the narrowing of the inter-microtubule ***,CAMSAPs recognize microtubule defects,which often occur near microtubule intersections,and then recruit katanin to remove the damaged ***,the CAMSAP–katanin complex is a regulatory module for the distance between *** together,our results characterize the architecture of cellular microtubule networks in high resolution and provide molecular insights into how the 3D structure of microtubule networks is controlled.

关键词： CAMSAPs microtubule intersections microtubule networks

来源：评论

学校读者我要写书评

暂无评论

Nonlinear Correction Approach for FMCW Radar based on Spectrum Recovery

Nonlinear Correction Approach for FMCW Radar based on Spectr...

引用

IEEE International Conference on Signal and Image Processing (ICSIP)

作者： Yanqi Liu Lili Gao Tianyue Shi Xinhua Mao Key Laboratory of Radar Imaging and Microwave Photonics Ministry of Education Nanjing University of Aeronautics and Astronautics Nanjing China R&D Center for Artificial Intelligence and Detection Technology Beijing institute of control and electronic technology Beijing China

ISBN: (纸本)9781665446006

There are two basic approaches for LFM (linear frequency modulation) signal pulse compression – matched filtering and Dechrip. For high-resolution imaging of small scenes, Dechirp is much more popular because it requires a lower sampling rate. However, the transmission signal of demodulation needs to be an ideal chirped signal for Dechirp. When linear modulation cannot be guaranteed accurately, the compression result will be spatially defocused, which causes the compensation complicated. This paper first derives the equivalence of matched filtering and Dechirp processing. Then, for the Dechirp received signal, this paper proposes a pulse compression method for nonlinear FM signals based on matched filtering without upsampling. Finally, the feasibility of the method was verified through experiments.

关键词： Pulse compression methods Image coding Frequency modulation Filtering imaging High-resolution imaging Radar

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：