IEEE Journal of Selected Areas in Sensors最新文献

{"title":"Flexible Near-Field Communication in Wearable Electronics: Antenna Design, Measurements, and System Demonstration","authors":"Yichao Hu;Furong Yang;Linlin Xu;Yuchao Wang;Cheng Zhang;Chaoyun Song","doi":"10.1109/JSAS.2025.3635540","DOIUrl":"https://doi.org/10.1109/JSAS.2025.3635540","url":null,"abstract":"This article presents the design, fabrication, and experimental evaluation of a flexible antenna for high-frequency near-field communication, specifically developed for wearable electronics and deployment on curved or moving surfaces. The antenna is fabricated on a polyimide substrate with electrodeposited copper and operates at 13.56 MHz, exhibiting a low reflection coefficient and stable bandwidth performance, even under bending conditions with a radius as small as 80 mm. Extensive measurements have confirmed that the device maintains reliable signal strength and stable communication performance under various mechanical deformations and dynamic conditions. The proposed reader system provides compatibility with various operating protocols, such as ISO/IEC 14443 and ISO/IEC 15693. Results highlight the antenna's capacity to maintain strong and stable wireless connectivity in realistic wearable scenarios, highlighting its suitability for integration into complex and changing scenarios. This work provides a cost-effective and adaptable solution for enabling seamless data exchange in next-generation wearable systems and lays the groundwork for future enhancements, such as multitag communication and expanded operating ranges.","PeriodicalId":100622,"journal":{"name":"IEEE Journal of Selected Areas in Sensors","volume":"3 ","pages":"23-32"},"PeriodicalIF":0.0,"publicationDate":"2025-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11264303","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145778204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cybersecurity of Sensor Systems for State Sequence Estimation: A Machine Learning Approach","authors":"Xubin Fang;Rick S. Blum;Ramesh Bharadwaj;Brian M. Sadler","doi":"10.1109/JSAS.2025.3633237","DOIUrl":"https://doi.org/10.1109/JSAS.2025.3633237","url":null,"abstract":"Due to possible devastating consequences, counteracting sensor data attacks is an extremely important topic, which has not seen sufficient study. To the best of our knowledge, this article develops the first methods that accurately identify/eliminate only the problematic attacked sensor data presented to a sequence estimation/regression algorithm under any attack from our attack model. The approach does not assume a known form for the statistical model of the sensor data, allowing data-driven and machine learning sequence estimation/regression algorithms to be protected. A simple protection approach for attackers not endowed with knowledge of the details of our protection approach is first developed, followed by additional processing for attacks based on protection system knowledge. Experimental results show that the simple approach achieves performance indistinguishable from that for an approach which knows which sensors are attacked. For cases where the attacker has knowledge of the protection approach, experimental results indicate the additional processing can be configured so that the worst-case degradation under the additional processing and a large number of sensors attacked can be made significantly smaller than the worst-case degradation of the simple approach, and close to an approach which knows which sensors are attacked, with just a slight degradation under no attacks. Mathematical descriptions of the worst-case attacks are used to demonstrate the additional processing will provide similar advantages for cases for which we do not have numerical results. All the data-driven/machine learning processing used in our approaches employ only unattacked training data.","PeriodicalId":100622,"journal":{"name":"IEEE Journal of Selected Areas in Sensors","volume":"3 ","pages":"33-46"},"PeriodicalIF":0.0,"publicationDate":"2025-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11250589","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145886654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-Sensitivity Microwave Detection of Subwavelength Objects Using a Dielectric-Loaded Waveguide With Electromagnetic Jet Lens","authors":"Antoine Deubaibe;Ali Ghaddar;Baraka Mahamout Mahamat;Bernard Bayard;Bruno Sauviac","doi":"10.1109/JSAS.2025.3614641","DOIUrl":"https://doi.org/10.1109/JSAS.2025.3614641","url":null,"abstract":"This letter presents a high-sensitivity, noncontact sensing approach based on a 15 GHz electromagnetic jet for the detection of subwavelength-scale objects. The jet is generated by a rectangular waveguide partially filled with polytetrafluoroethylene (PTFE) and terminated by a rectangular dielectric lens extending into free space. An impedance-matching transition between the empty and PTFE-filled sections of the waveguide is optimized to minimize insertion loss resulting in a single, easily insertable dielectric component that ensures seamless integration into the waveguide. The lens geometry is designed through full-wave simulations to achieve subwavelength focusing. The proposed structure produces a focal spot with full width at half maximum of <inline-formula><tex-math>$0.41lambda$</tex-math></inline-formula> and <inline-formula><tex-math>$0.59lambda$</tex-math></inline-formula> in the <inline-formula><tex-math>$x$</tex-math></inline-formula>- and <inline-formula><tex-math>$y$</tex-math></inline-formula>-directions, respectively. Experimental results confirm the enhanced near-field confinement and demonstrate the detection of objects as small as <inline-formula><tex-math>$lambda /400$</tex-math></inline-formula>, highlighting advantages over conventional open-ended waveguide configurations. Owing to its fully guided architecture, compactness, and ease of use, the proposed device is particularly well suited for high-resolution, noninvasive sensing and offers strong potential for transfer to industrial applications.","PeriodicalId":100622,"journal":{"name":"IEEE Journal of Selected Areas in Sensors","volume":"2 ","pages":"303-309"},"PeriodicalIF":0.0,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11184840","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145405314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Real-Time Interference Mitigation for Automotive Radar Sensor","authors":"Yubo Wu;Alexander Li;Wenjing Lou;Y. Thomas Hou","doi":"10.1109/JSAS.2025.3609274","DOIUrl":"https://doi.org/10.1109/JSAS.2025.3609274","url":null,"abstract":"Automotive radar sensor plays a crucial role in advanced driver assistance systems. As radar technology becomes increasingly common in vehicles, radar-to-radar interference poses a significant challenge, leading to a reduction in target detection performance. It is essential for an interference mitigation algorithm to effectively reduce this interference under dynamic driving conditions while adhering to strict processing time requirements. In this article, we present Soteria—a real-time interference mitigation algorithm for frequency modulated continuous wave radar systems, leveraging compressed sensing techniques. Soteria identifies interference by exploiting the sparsity of signals in the frequency-time domain, then separates the desired signal from interference using the orthogonal matching pursuit (OMP) algorithm. Additionally, Soteria utilizes the inherent correlation between input data from neighboring time frames to reduce the search space for the OMP algorithm. To further enhance processing speed, Soteria is implemented using a GPU-based parallel computing approach. Simulation results indicate that Soteria can achieve <inline-formula><tex-math>$sim$</tex-math></inline-formula>1 ms processing time, outperforming state-of-the-art methods in target detection accuracy.","PeriodicalId":100622,"journal":{"name":"IEEE Journal of Selected Areas in Sensors","volume":"2 ","pages":"290-302"},"PeriodicalIF":0.0,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11159154","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145223697","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"DeepCPD: Deep Learning-Based In-Car Child Presence Detection Using WiFi","authors":"Sakila S. Jayaweera;Beibei Wang;Wei-Hsiang Wang;K. J. Ray Liu","doi":"10.1109/JSAS.2025.3602722","DOIUrl":"https://doi.org/10.1109/JSAS.2025.3602722","url":null,"abstract":"Child presence detection (CPD) is a vital technology for vehicles to prevent heat-related fatalities or injuries by detecting the presence of a child left unattended. Regulatory agencies around the world are planning to mandate CPD systems in the near future. However, existing solutions have limitations in terms of accuracy, coverage, and additional device requirements. While WiFi-based solutions can overcome the limitations, existing approaches struggle to reliably distinguish between adult and child presence, leading to frequent false alarms, and are often sensitive to environmental variations. In this article, we present <italic>DeepCPD</i>, a novel deep learning framework designed for accurate CPD in smart vehicles. <italic>DeepCPD</i> utilizes an environment-independent feature—the autocorrelation function derived from WiFi channel state information—to capture human-related signatures while mitigating environmental distortions. A Transformer-based architecture, followed by a multilayer perceptron, is employed to differentiate adults from children by modeling motion patterns and subtle body size differences. To address the limited availability of in-vehicle child and adult data, we introduce a two-stage learning strategy that significantly enhances model generalization. Extensive experiments conducted across more than 30 car models and over 500 h of data collection demonstrate that <italic>DeepCPD</i> achieves an overall accuracy of 92.86%, outperforming a convolutional neural network (CNN) baseline by a substantial margin (79.55% ). In addition, the model attains a 91.45% detection rate for children while maintaining a low false alarm rate of 6.14% .","PeriodicalId":100622,"journal":{"name":"IEEE Journal of Selected Areas in Sensors","volume":"2 ","pages":"278-289"},"PeriodicalIF":0.0,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11141026","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145036736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"SATVIO: Stereo Attention-Based Visual Inertial Odometry","authors":"Raoof Doorshi;Hajira Saleem;Reza Malekian","doi":"10.1109/JSAS.2025.3601056","DOIUrl":"https://doi.org/10.1109/JSAS.2025.3601056","url":null,"abstract":"This study introduces a novel stereo attention-based visual inertial odometry model, namely, SATVIO, aiming to enhance odometry performance by leveraging deep learning techniques for sensor fusion. The research evaluates the SATVIO model against existing visual odometry methods using the KITTI odometry dataset, focusing on translational and rotational accuracy enhancements through innovative attention mechanisms and early fusion strategies. The proposed model integrates convolutional neural networks and long short-term memory networks to process and fuse data from stereo image inputs and inertial measurements effectively. SATVIO model particularly employs triplet attention and early fusion techniques with the aim of addressing the challenges posed by scale ambiguity and environmental changes. The results demonstrates that our proposed model outperforms traditional methods in specific configurations, thus demonstrating competitive or superior performance on key challenging sequences.","PeriodicalId":100622,"journal":{"name":"IEEE Journal of Selected Areas in Sensors","volume":"2 ","pages":"259-265"},"PeriodicalIF":0.0,"publicationDate":"2025-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11133748","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145027957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Advancements in Blood Group Classification: A Novel Approach Using Machine Learning and RF Sensing Technology","authors":"Malik Muhammad Arslan;Lei Guan;Xiaodong Yang;Nan Zhao;Abbas Ali Shah;Muhammad Bilal Khan;Mubashir Rehman;Syed Aziz Shah;Qammer H. Abbasi","doi":"10.1109/JSAS.2025.3601060","DOIUrl":"https://doi.org/10.1109/JSAS.2025.3601060","url":null,"abstract":"Blood group classification is critical for enhancing the safety of blood transfusions, preventing transfusion-related complications, and facilitating emergency medical interventions and organ transplantation. Unlike traditional methods that require blood draws and chemical reagents, our approach analyzes the unique electromagnetic signatures of blood samples through radio frequency (RF) sensing at 1.2 GHz. We developed a custom software-defined radio (SDR) platform that captures subtle variations in orthogonal frequency-division multiplexing subcarriers, which are then processed by advanced machine learning algorithms including gradient boosting and random forest. Testing on 5840 samples across eight blood groups demonstrated remarkable 97.8% classification accuracy with results delivered in just 1.5 s—significantly faster than conventional 30–60 min laboratory methods. The system’s innovative integration of RF sensing and machine learning eliminates the need for reagents or physical contact while maintaining high precision, offering particular advantages for emergency situations and resource-limited settings. This work represents a paradigm shift in blood typing technology, combining the portability of SDR hardware with the analytical power of machine learning to create a faster safer alternative to traditional approaches. The demonstrated accuracy and speed suggest strong potential for clinical adoption in transfusion medicine and point-of-care diagnostics.","PeriodicalId":100622,"journal":{"name":"IEEE Journal of Selected Areas in Sensors","volume":"2 ","pages":"266-277"},"PeriodicalIF":0.0,"publicationDate":"2025-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11131658","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145036790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"MATF-Net: Multiscale Attention With Tristream Fusion Network for Radar Modulation Recognition in S-Band","authors":"Fan Zhou;Jinyang Ren;Fanyu Xu;Yang Wang;Wei Wang;Peiying Zhang","doi":"10.1109/JSAS.2025.3594012","DOIUrl":"https://doi.org/10.1109/JSAS.2025.3594012","url":null,"abstract":"Automatic modulation recognition of radar signals plays a crucial role in information-centric warfare and holds significant importance in military applications such as radar detection. In modern information-centric battlefields, the S-band (2–4 GHz) is widely utilized for tasks such as pulse radar detection due to its abundant spectral resources, excellent adaptability, and suitability for equipment miniaturization. However, under electromagnetic countermeasure conditions, radar signals within the S-band become dense and complex, making accurate modulation recognition particularly challenging. Existing methods often fail to adequately extract and fuse the multimodal features of signals, resulting in unreliable recognition performance under complex electromagnetic environments. Consequently, achieving robust AMR of radar signals under low signal-to-noise ratio (SNR) conditions has become critically important. To address the aforementioned challenges, this article proposes a multiscale attention with tristream fusion network to improve automatic modulation recognition of radar signals under low SNR conditions, aiming to mitigate issues such as feature ambiguity and noise interference. The proposed network comprises three main components: the three-stream feature extraction network (TFEN), the self-attention fusion network (SAFN), and the multiscale information fusion network (MIFN). Within TFEN, three specialized modules are designed—the spatial extraction module, the corresponding extraction module, and the temporal-compensation module. By parallelly extracting spatial features, amplitude and phase information, and temporal compensation features, TFEN effectively addresses the performance degradation issues typically encountered in low SNR scenarios. The SAFN and MIFN modules prioritize salient information across different modalities, compute interfeature correlations, and perform weighted fusion to enable dynamic selection and multiscale integration. This enhances the representational capacity of the fused features. Simulation results demonstrate that the proposed model achieves an average accuracy of 88.54% across SNR levels ranging from −20 dB to 20 dB, significantly outperforming existing methods and exhibiting superior adaptability.","PeriodicalId":100622,"journal":{"name":"IEEE Journal of Selected Areas in Sensors","volume":"2 ","pages":"247-258"},"PeriodicalIF":0.0,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11104803","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144990131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Precision Smart Healthcare System With Deep Learning for Real-Time Radiographic Localization and Severity Assessment of Peri-Implantitis","authors":"Chiung-An Chen;Ya-Yun Huang;Yi-Cheng Mao;Wei-Jiun Feng;Tsung-Yi Chen;Chen-Ye Ciou;Wei-Chen Tu;Patricia Angela R. Abu","doi":"10.1109/JSAS.2025.3588071","DOIUrl":"https://doi.org/10.1109/JSAS.2025.3588071","url":null,"abstract":"Peri-implantitis is a common complication associated with the growing use of dental implants. Clinicians often rely on periapical radiographs for its diagnosis. Recent studies have explored the use of image analysis and artificial intelligence (AI) to reduce the diagnostic workload and time. However, the low quality of periapical images and inconsistent angulation across serial radiographs complicate clinical assessment of peri-implant bone changes, making it challenging for AI to accurately evaluate the severity of peri-implantitis. To address this issue, this study proposes a novel system for the identification and localization of peri-implantitis using periapical radiographs. The study utilizes the YOLOv8 oriented bounding boxes (OBB) model to accurately identify dental implant locations, significantly improving localization accuracy (98.48%) compared to previous research. Since peri-implantitis is diagnosed unilaterally, the algorithm splits the implant in X-ray images to facilitate better analysis. Subsequent steps enhanced the visibility of symptoms by using histogram equalization and coloring the implant parts. The convolutional neural networks (CNN) model, particularly EfficientNet-B0, further improved the detection accuracy (94.05%). In addition, an AI-based method was introduced to assess the severity of peri-implantitis by classifying thread damage, achieving 90.48% accuracy. This deep learning approach using CNN models significantly reduces interpretation time for X-rays, easing the dentist’s workload, minimizing misdiagnosis risks, lowering healthcare costs, and benefiting more patients.","PeriodicalId":100622,"journal":{"name":"IEEE Journal of Selected Areas in Sensors","volume":"2 ","pages":"222-231"},"PeriodicalIF":0.0,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11079813","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144814087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Data-Driven Smart Sensing and Real-Time High-Fidelity Digital Twin for Building Management","authors":"Zhizhao Liang;Jagdeep Singh;Yichao Jin","doi":"10.1109/JSAS.2025.3588827","DOIUrl":"https://doi.org/10.1109/JSAS.2025.3588827","url":null,"abstract":"Achieving a high-fidelity digital twin of buildings is desirable but often requires a substantial influx of real-time data, necessitating a dense network of environmental sensors. In addition, high hardware expenses, deployment costs, constraints, and sensor malfunctions can impede the realization of such digital twins. In this article, we introduce <monospace>TwinSense</monospace>, a pioneering system that harnesses data-driven virtual sensing within a real-time high-fidelity 3-D digital twin of the building environment. Our innovative method utilizes machine learning (ML)-based inference to accurately estimate real-time sensor variables, such as temperature and <inline-formula><tex-math>$text{CO}_{2}$</tex-math></inline-formula> levels, across both 2-D (varying rooms) and 3-D (diverse elevations) domains, with limited reliance on physical sensors. By extending sensing coverage through ML-driven virtual smart sensing, we create a more accurate digital twin for advanced building management. Our case study results across different seasons indicate an average mean absolute percentage error of 2% for temperature and approximately 5% for air quality parameters, such as <inline-formula><tex-math>$text{CO}_{2}$</tex-math></inline-formula>, when compared against ground truth physical sensors deployed in the multiroom segmented building. Furthermore, we propose a modified 3D-inverse distance weighting thermal interpolation method. Leveraging the comprehensive multicamera-angle visualization capabilities facilitated by the Unreal Engine, our analysis revealed a potential anomaly within the air conditioning system. The building management team validated this observation during the real-world trial, affirming the initial efficacy of our solution.","PeriodicalId":100622,"journal":{"name":"IEEE Journal of Selected Areas in Sensors","volume":"2 ","pages":"232-246"},"PeriodicalIF":0.0,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11079784","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144843095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}