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IEEE conference on Computer Communications (IEEE INFOCOM)

作者： Cao, Hao xu, Jingao Li, Danyang Yang, Meng Liu, Yunhao Tsinghua Univ Sch Software Beijing Peoples R China Tsinghua Univ BNRist Beijing Peoples R China Tsinghua Univ Global Innovat Exchange Beijing Peoples R China

ISBN: (纸本)9798350383515;9798350383508

Drones have demonstrated their pivotal role in various applications such as search-and-rescue, smart logistics, and industrial inspection, with accurate localization playing an indispensable part. However, in high dynamic range and rapid motion scenarios, traditional visual sensors often face challenges in pose estimation. Event cameras, with their high temporal resolution, present a fresh opportunity for perception in such challenging environments. Current efforts resort to event-visual fusion to enhance the drone's sensing capability. Yet, the lack of efficient event-visual fusion algorithms and corresponding acceleration hardware causes the potential of event cameras to remain underutilized. In this paper, we introduce EventBoost, an acceleration platform designed for drone-based applications with event-image fusion. We propose a suit of novel algorithms through software-hardware co-design on Zynq SoC, aimed at enhancing real-time localization precision and speed. EventBoost achieves enhanced visual fusion precision and markedly elevated processing efficiency. The performance comparison with two state-of-the-art systems shows EventBoost achieves 24.33% improvement in accuracy with 30 ms latency on resource-constrained platforms.

关键词： sensor fusion event camera hardware acceleration mobile sensing

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Printed Directional Power sensor 23

Printed Directional Power Sensor

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23rd International conference on Electromagnetics in advanced applications, ICEAA 2022

作者： Maree, Jacques Van Der Walt, Pieter Reutech Radar Systems Stellenbosch South Africa

ISBN: (数字)9781665481113

ISBN: (纸本)9781665481113

Transmitted and reflected power is typically measured between the output of a power amplifier and the input of an antenna of a transmitter. Directional couplers in conjunction with power detectors are commonly used for this purpose, where the coupled port of the coupler is used to measure the transmitted power from the amplifier and the isolated port is used to measure the reflected power from the antenna. Classical directional couplers, such as quarter-wavelength coupled-line couplers, can become physically large components in a system, depending on the frequency of operation. A directional coupler also adds additional cost, power loss and generates excess heat. © 2022 IEEE.

关键词： Directional couplers

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Demodulation Method for Optical Fiber Flow Velocity sensor Based on Reference Filter 4

Demodulation Method for Optical Fiber Flow Velocity Sensor B...

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4th International Computational Imaging conference, CITA 2024

作者： Zhang, xingyu Chen, Zhiyuan xu, Ronghui Yang, Tianyu Liu, Huanhuan Dong, Yuming Department of Optoelectronic Engineering Guilin University of Electronic Technology Guilin541004 China Opto-Electronic Engineering and Technology Shenzhen Institute of Advanced Technology Chinese Academy of Sciences Shenzhen518055 China

ISBN: (纸本)9781510688834

This paper proposes a demodulation method for GaAs fiber-optic flow velocity sensors based on convolution operations. The method employs a five-layer wavelet forced denoising technique to smooth the acquired spectral data and utilizes a long-pass filter (LPF) waveform as a reference baseline for wavelength drift demodulation via convolution. Through polynomial fitting, this demodulation approach reduces demodulation errors and further enhances accuracy. Within the flow rate measurement range of 1.7 to 42.5 cm/s, the sensor exhibits a maximum flow rate sensitivity of 97.3 pm/(cm/s), with wavelength demodulation accuracy reaching the picometer level. The minimum flow rate demodulation error is as low as 0.02 cm/s. This method is capable of delivering high-precision demodulation across various application scenarios, demonstrating significant potential for applications in the field of fiber flow rate sensing. © 2025 SPIE.

关键词： Flow velocity

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Radiometric Resolution Measurement for TerraSAR-x sensor by Realizing Man-Made Homogeneous Regions 2

Radiometric Resolution Measurement for TerraSAR-X Sensor by ...

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2nd IEEE International conference on Signal, Information and Data Processing, ICSIDP 2024

作者： Lin, xin Chen, Quan Mao, JingJun Gao, Junying Ai, Shaojie He, Jing Wang, Kaizhi Shanghai Institute of Satellite Engineering Shanghai China Tianjin University School of Future Technology Tianjin China Shanghai Jiao Tong University Department of Electronic Engineering Shanghai China

ISBN: (纸本)9798331515669

A homogeneous region exhibiting a stable and high backscattering coefficient is crucial for the radiometric calibration and performance evaluation of synthetic aperture radar (SAR) systems. However, creating such a region in practice presents significant challenges. This study presents a new method for creating a uniform region with consistent backscattering, defined by a known backscattering coefficient, using specially designed metal grids. This method is applied to evaluate the radiometric resolution of the TerraSAR-x *** proposed man-made grid-structured target, referred to as the metal grid, is constructed from aluminum. The backscattering coefficients of this grid were measured across various incident angles and frequencies in a microwave anechoic chamber. Radar cross-section (RCS) measurements confirm the target's strong backscattering properties. Using this designed target, homogeneous regions with high backscattering were created at Shanghai Jiao Tong University, China. Two spaceborne experiments conducted by the TerraSAR-x satellite over the test area were carried out to assess the radiometric resolution of the SAR sensor. The experimental results demonstrate that the radiometric resolution values derived from the TerraSAR-x images closely align with the reference values provided in the product specifications. Additionally, the developed strong backscattering homogeneous region proves to be highly effective and well-suited for SAR radiometric calibration and other related applications. © 2024 IEEE.

关键词： Radar cross section

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Сlassifiсatiоn and deteсtiоn оf Соvid-19 based оn x-Raу and СT images using deeр learning and maсhine learning teсhniques: A bibliоmetriс analуsis

AIMS Electronics and Electrical Engineering

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AIMS Electronics and Electrical Engineering 2024年第1期8卷 71-103页

作者： Chawki, Youness Elasnaoui, Khalid Ouhda, Mohamed Moulay Ismail University Faculty of Sciences and Techniques Errachidia Morocco Mohammed First University ENSAO SmartICT Lab Oujda Morocco Sultan Moulay Slimane University Higher School of Technology Department of Computer and Mathematics TIAD Laboratory Khenifra Morocco

Abstraсt: During the COVID-19 pandemic, it was crucial for the healthcare sector to detect and classify the virus using x-ray and CT scans. This has underlined the need for advanced Deep Learning and Machine Learning approaches to effectively spot and manage the virus's spread. Indeed, researchers worldwide have dynamically participated in the field by publishing an important number of papers across various databases. In this context, we present a bibliometric analysis focused on the detection and classification of COVID-19 using Deep Learning and Machine Learning techniques, based on x-Ray and CT images. We analyzed published documents of the six prominent databases (IEEE xplore, ACM, MDPI, PubMed, Springer, and ScienceDirect) during the period between 2019 and November 2023. Our results showed that rising forces in economy and technology, especially India, China, Turkey, and Pakistan, began to compete with the great powers in the field of scientific research, which could be seen from their number of publications. Moreover, researchers contributed to Deep Learning techniques more than the use of Machine Learning techniques or the use of both together and preferred to submit their works to Springer Database. An important result was that more than 57% documents were published as Journal Articles, which was an important portion compared to other publication types (conference papers and book chapters). Moreover, the PubMed journal "Multimedia Tools and applications" tops the list of journals with a total of 29 published articles. © 2024 the Author(s), licensee AIMS Press.

关键词： Database systems

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advanced sensor systems and applications x

Advanced Sensor Systems and Applications X

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advanced sensor systems and applications x 2020

ISBN: (纸本)9781510639232

The proceedings contain 41 papers. The topics discussed include: coupled loss-gain microresonators with fano resonance for high-sensitivity refractometric sensing;low detection limit refractive index sensor based on open microcavity Mach-Zehnder interferometer and fiber ring laser;extraction of brillouin frequency shift in brillouin distributed fiber sensors by neighbors-based machine learning;application of metasurface to inclination angle measurement;a tilted long period grating imprinted on a commercial plastic optical fiber for liquid level sensing;all-single-mode fiber intracavity displacement sensor based on Er-doped fiber ring laser;temporal resolution research based on x-ray superconducting nanowire single-photon detectors;simulation and investigation of the resonator gyro;and numerical simulations of local plasmonic field distortion for multimodal core-shell gold-based nanoparticles.

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2nd International conference on Human-Centric Smart Computing, ICHCSC 2023

2nd International Conference on Human-Centric Smart Computin...

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2nd International conference on Human-Centric Smart Computing, ICHCSC 2023

ISBN: (纸本)9789819977109

The proceedings contain 53 papers. The special focus in this conference is on Human-Centric Smart Computing. The topics include: Securing Data Based on Lightweight Algorithm for Internet of Things Networks;an Exploration of How Children Can Be Proactive for Their Own Digital Privacy and Security in the Perspective of North-Eastern Bangladesh;A Scalable URL-Based Phishing Websites Detection System Using Machine Learning Techniques;accident Detection and Prevention for advanced Driver Assistance System;labor Safety Analysis Using Object Recognition and Deep Learning;diagnosis of Faults in Wireless sensor Networks Through Machine Learning Approach;career Change: Systematic Literature Review and Future Research Agenda;prediction of Heart Disease and Improving Classifier Performance Using Particle Swarm Optimization;Registration of CT Images of Lung Using Fireworks Algorithm;Exploring Artificial Neural Network for x-Parameter and S-Parameter Modelling of HEMT;Exploratory Review of applications of Machine Learning for Small- and Medium-Sized Enterprises (SMEs);Bank’s Efficiency & The Liquidity Coverage Ratio (LCR) of Indian Banks: Using Data Envelopment Analysis Approach;a Comparative Analysis of Eye Movement and Gaze Tracking Algorithms;response Surface and Artificial Neural Network Simulation Used in Dissolution Enhancement of Poorly Soluble Lornoxicam Using Microwave-Assisted Solid Dispersion Technique;Optimizing Analysis of Donepezil HCl and Memantine HCl Using Multivariate Analysis as a Data Mining Tool in HPTLC Methodology;applying a Privacy Policy for E-Waste Management in Bangladesh;spider Monkey Optimization-Based Image Data Forgery Detection Over Vehicular Cloud Computing;Two-Stage ASL Detection Architecture: A Hand Sign Languages Detection Scheme;retinal Vessel Segmentation Using a Novel U-Net Architecture with Data Augmentation.

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Operationalizing the Use of sensor Data in Mobile Crowdsensing: A Systematic Review and Practical Guidelines 19th

Operationalizing the Use of Sensor Data in Mobile Crowdse...

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19th EAI International conference on Collaborative Computing: Networking, applications and Worksharing, CollaborateCom 2023

作者： Kraft, Robin Blasi, Maximilian Schickler, Marc Reichert, Manfred Pryss, Rüdiger Institute of Databases and Information Systems Ulm University Ulm Germany Department of Clinical Psychology and Psychotherapy Ulm University Ulm Germany Institute of Clinical Epidemiology and Biometry University of Würzburg Würzburg Germany

ISBN: (纸本)9783031545306

Smartphones have found their way into many domains because they can be used to measure phenomena of common interest. The Global Overview Report Digital 2022 states that two-thirds of the world’s population uses a smartphone. This creates a power for measurements that many researchers would like to leverage. However, this in turn requires standardized approaches to collaborative data collection. Mobile crowdsensing (MCS) is a paradigm that pursues collaborative measurements with smartphones and the available sensor technology. Although literature on MCS has existed since 2006, there is still little work that has systematically studied existing systems. Especially when developing technical systems based on MCS, design decisions must be made that affect the subsequent operation. In this paper, we therefore conducted a PRISMA-based literature review on MCS, considering two aspects: First, we wanted to be able to better categorize existing systems, and second, we wanted to derive guidelines for developers that can support design decisions. Out of a total of 661 identified publications, we were able to include 117 papers in the analysis. Based on five main criteria (application area, goals, sensor utilization, time constraints, processing device), we show which goals the research area is currently pursuing and which approaches are being used to achieve these goals. Following this, we derive practical guidelines to support researchers and developers in making design decisions. © ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering 2024.

关键词： Smartphones

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Impact of indium ions on some properties of TiO2 thin films for sensor applications

Impact of indium ions on some properties of TiO2 thin films ...

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4th International conference on advanced Materials for Photonics, Sensing and Energy Conversion Energy applications (AMPSECA)

作者： Doubi, Youssef Hartiti, Bouchaib Siadat, Maryam Arba, Youssef Stitou, Mohamed Labrim, Hicham Nkuissi, Herve Joel Tchognia Fadili, Salah Tahri, Mounia Thevenin, Philippe Losson, Etienne Hassan II Univ Casablanca LVO BEEN Lab MEEM & DD Grp FSTM BP 146 Mohammadia 20650 Morocco Univ Lorraine LCOMS Lab Metz France Ibn Tofail Univ Natl Sch Appl Sci Adv Syst Engn Lab Kenitra Morocco CNESTEN Unit DES Rabat Morocco Univ Lorraine LMOPS Lab Metz France

Indium doped Titanium dioxide (TiO2: In) thin layers were deposited on glass substrates by the spray pyrolysis deposition with the substrate temperature 450 degrees C. The structural and the optical properties studies were investigated for the films deposited with various atomic doping indium percentage (0, 1, 3, 5 and 7 at.%). The results of x-ray diffraction (xRD) was shown the presence of anatase peak with a strong orientation along (101) plane. The crystallite size was found to be between 7.09 and 14.43 nm. Raman spectroscopy of undoped and doped TiO2 thin films were confirmed the presence of single phase of anatase TiO2. The optical properties were determined using absorbance and transmittance results in the range of wavelength between 300 and 800 nm. The calculated optical band gap varied between 3.08 and 3.25 eV. The Hall measurement displayed an increase of conductivity 1.04 to 5.03 ***-1 and the electron mobility from 11.33 to 35.70 cm2/V.s in front of the decrease of the resistivity from 9.56 x 10-1 to 1.98 x 10-1 *** for the variation of atomic doping from 0% to 7%. The best obtained properties of undoped and doped TiO2 make our sprayed thin films suitable to be as sensitive layer for optoelectronic applications among these, a gas sensor application.(c) 2022 Elsevier Ltd. All rights *** and peer-review under responsibility of the scientific committee of the 4thInternational conference on advanced Materials for Photonics, Sensing and Energy Conversion Energy applications. All rights reserved.

关键词： Anatase Optical band gap The Hall measurement Electron mobility Atomic doping

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The Research on Reconfigurable Intelligent Surface progress, challenges and applications 3

The Research on Reconfigurable Intelligent Surface progress,...

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3rd International conference on Green Communication, Network, and Internet of Things, CNIoT 2023

作者： Li, Hao Yu, Yiming Gao, Songtao Cao, Yangyang China Mobile Communications Group Co. Ltd Beijing China China Mobile Group Design Institute Co. Ltd Beijing China

ISBN: (纸本)9781510668867

With the first successful establishment of 3GPP R18, the 5G advanced has enforced the speed of 5G network construction, and the 6G technology enabling 5G evolution has gradually become the major research focus area. Reconfigurable Intelligent Surface (RIS), as an important technology that can improve network coverage and reconstruct imperfect signal propagation environment, which considered as one of the key technologies for 5G advanced and 6G networks construction. This paper introduces the research progress of reconfigurable intelligent surface technology, analyzes the potential application scenarios and challenges, and proposes a possible landing plan for the 5G application of reconfigurable intelligent surface technology. © 2023 SPIE.

关键词： 5G mobile communication systems

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