发布求助
文献互助 智能选刊 最新文献

Electronics Letters最新文献

筛选
英文 中文
Randomised Jammer Activation for Physical Layer Security: A Probabilistic Approach to Thwart Multi-Antenna Eavesdroppers 随机干扰机激活物理层安全：一种概率方法来阻止多天线窃听
IF 0.8 4区 工程技术
Electronics Letters Pub Date : 2025-08-02 DOI: 10.1049/ell2.70378
Yanqing Liu, Jiancheng Sun, Liang Dong
{"title":"Randomised Jammer Activation for Physical Layer Security: A Probabilistic Approach to Thwart Multi-Antenna Eavesdroppers","authors":"Yanqing Liu,&nbsp;Jiancheng Sun,&nbsp;Liang Dong","doi":"10.1049/ell2.70378","DOIUrl":"https://doi.org/10.1049/ell2.70378","url":null,"abstract":"<p>We study a wireless communication system consisting of a transmitter, a legitimate receiver, multi-antenna eavesdroppers and randomly distributed friendly jammers. A secrecy guard zone surrounds the transmitter, within which eavesdroppers can be detected or denied entry. To counter the multi-antenna eavesdroppers' ability to mitigate jamming, we propose a randomised activation strategy where jammers independently transmit artificial noise with a probability. We derive closed-form expressions for the transmission probability and secrecy outage probability, and develop an optimisation framework to adjust the rates of transmitted codewords and confidential messages. Simulation results validate our analytical derivations and demonstrate that the proposed strategy effectively maximises secrecy throughput while maintaining the secrecy outage probability below a specified threshold.</p>","PeriodicalId":11556,"journal":{"name":"Electronics Letters","volume":"61 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2025-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/ell2.70378","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144764110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cosecant-Squared Pattern Synthesis for Compact Antenna Arrays Based on Regional Root Allocation 基于区域根分配的紧凑天线阵余割平方方向图综合
IF 0.8 4区 工程技术
Electronics Letters Pub Date : 2025-08-02 DOI: 10.1049/ell2.70372
Zhaoyi Wang, Jun Xu, Wanjing Huang, Hongji Fan, Zhiqiang Yu, Jianyi Zhou
{"title":"Cosecant-Squared Pattern Synthesis for Compact Antenna Arrays Based on Regional Root Allocation","authors":"Zhaoyi Wang,&nbsp;Jun Xu,&nbsp;Wanjing Huang,&nbsp;Hongji Fan,&nbsp;Zhiqiang Yu,&nbsp;Jianyi Zhou","doi":"10.1049/ell2.70372","DOIUrl":"https://doi.org/10.1049/ell2.70372","url":null,"abstract":"<p>To meet the communication and sensing demands of unmanned aerial vehicles in urban low-altitude airspace, this letter proposes a low-sidelobe, cosecant-squared pattern synthesis method based on a compact antenna array. By employing a 0.25-wavelength element spacing, the array provides increased degrees of freedom for radiation pattern synthesis. A root-moving method with complex-plane, regional root allocation is introduced and combined with the cuckoo search (CS) algorithm to synthesize low-sidelobe, cosecant-squared radiation patterns. A compact 32-element magnetic dipole antenna array is designed and fabricated for the U6G band, capable of switching between a wide-angle scanning beam and a cosecant-squared shaped beam. Results show that the array achieves a scanning range greater than 130° and a peak gain of 19.5 dBi for the scanning beam pattern. For the cosecant-squared pattern, it achieves a maximum sidelobe level (SLL) of −27.5 dB and a main lobe gain of 17.0 dBi.</p>","PeriodicalId":11556,"journal":{"name":"Electronics Letters","volume":"61 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2025-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/ell2.70372","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144758519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Linear Method for Extracting the Amplitude of a Sinusoidal Signal 一种提取正弦信号幅度的线性方法
IF 0.7 4区 工程技术
Electronics Letters Pub Date : 2025-07-26 DOI: 10.1049/ell2.70374
Wanan Yang, Chaoyang Zhang, Xuke Xia, Changyuan Wang, Chunhua Ren
{"title":"A Linear Method for Extracting the Amplitude of a Sinusoidal Signal","authors":"Wanan Yang,&nbsp;Chaoyang Zhang,&nbsp;Xuke Xia,&nbsp;Changyuan Wang,&nbsp;Chunhua Ren","doi":"10.1049/ell2.70374","DOIUrl":"https://doi.org/10.1049/ell2.70374","url":null,"abstract":"<p>The amplitude extraction of sinusoidal signals is a very important task in many engineering applications; existing extraction methods demonstrate poor performance due to their limited extraction accuracy. This paper presents a method, which does not require a power of two sampling points, for linearly extracting the amplitude of sinusoidal signals and develops a corresponding hardware system. The system can autonomously generate fixed-frequency sinusoidal signals induced through an electromagnetic induction coil, which are subsequently amplified and are sampled by the acquisition card. Additionally, the system features a standard signal input interface, enabling flexible input of sinusoidal signals with different frequencies. Both simulation and real signal sampling data experiments show that it does not require complex iterative calculations and has the advantages of fast speed and high accuracy, and can be used in the scenarios requiring high real-time performance and extraction precision.</p>","PeriodicalId":11556,"journal":{"name":"Electronics Letters","volume":"61 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2025-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/ell2.70374","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144712124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Research on Extended Target Tracking Algorithm Based on RHM and RMM Fusion 基于RMM与RMM融合的扩展目标跟踪算法研究
IF 0.7 4区 工程技术
Electronics Letters Pub Date : 2025-07-25 DOI: 10.1049/ell2.70371
Guoqing Qi, Zixuan Xu, Yinya Li, Andong Sheng
{"title":"Research on Extended Target Tracking Algorithm Based on RHM and RMM Fusion","authors":"Guoqing Qi,&nbsp;Zixuan Xu,&nbsp;Yinya Li,&nbsp;Andong Sheng","doi":"10.1049/ell2.70371","DOIUrl":"https://doi.org/10.1049/ell2.70371","url":null,"abstract":"<p>Aiming at the extended target tracking problem with irregular shapes, an extended target tracking algorithm that fuses random hypersurface model (RHM) and random matrix model (RMM) is proposed in the case where the priori shape of the target is unknown. First, the algorithm adopts the RMM method to track the extended target and then takes the reference points on the elliptical shape contour and constructs an ordered sequence. Second, the discrete Fourier transform (DFT) is performed on the sequence to find the coefficients of the harmonic components to obtain the elliptical shape parameters. Then, the ellipsoidal shape parameter is used as the a priori shape parameter of the star-convex RHM. Finally, the effectiveness of the proposed algorithm is verified by simulation experiments. The proposed extended target fusion method provides a more accurate means for precise tracking and state prediction of extended targets.</p>","PeriodicalId":11556,"journal":{"name":"Electronics Letters","volume":"61 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/ell2.70371","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144705352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Study on Coordinated and Optimal Allocation of Wind Generation and Storage in a Microgrid Based on Power Balancing 基于功率均衡的微电网风电与储能协调优化配置研究
IF 0.7 4区 工程技术
Electronics Letters Pub Date : 2025-07-24 DOI: 10.1049/ell2.70362
Yiyi Huang, Qingguo Yuan, Ying Pang, Gang Li
{"title":"A Study on Coordinated and Optimal Allocation of Wind Generation and Storage in a Microgrid Based on Power Balancing","authors":"Yiyi Huang,&nbsp;Qingguo Yuan,&nbsp;Ying Pang,&nbsp;Gang Li","doi":"10.1049/ell2.70362","DOIUrl":"https://doi.org/10.1049/ell2.70362","url":null,"abstract":"<p>This letter presents a model for coordinated optimal allocation of wind, solar, and storage in microgrids that can be applied to different generation conditions and is integrated with the Gurobi solver. The model has been developed for the purpose of dispatch optimization under four distinct operating modes: wind, photovoltaic, a hybrid of the two, and energy storage device configuration. Furthermore, the optimal scheduling strategy is one which seeks to minimize costs whilst meeting operational requirements. The system has been designed to eliminate power wastage by incorporating storage solutions of an appropriate size. The experimental results demonstrate a notable reduction in costs when scheduling strategy of the model is employed, as compared to alternative operational modes.</p>","PeriodicalId":11556,"journal":{"name":"Electronics Letters","volume":"61 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/ell2.70362","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144687873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nullifying Jammer Effects in RIS-Assisted GNSS-Free Drone Localisation 在ris辅助GNSS-Free无人机定位中消除干扰效应
IF 0.7 4区 工程技术
Electronics Letters Pub Date : 2025-07-24 DOI: 10.1049/ell2.70368
Mehari Meles, Akash Rajasekaran, Reino Virrankoski, Riku Jäntti
{"title":"Nullifying Jammer Effects in RIS-Assisted GNSS-Free Drone Localisation","authors":"Mehari Meles,&nbsp;Akash Rajasekaran,&nbsp;Reino Virrankoski,&nbsp;Riku Jäntti","doi":"10.1049/ell2.70368","DOIUrl":"https://doi.org/10.1049/ell2.70368","url":null,"abstract":"<p>A general challenge in drone localisation and navigation is the strong dependence on satellite positioning. Reconfigurable intelligent surfaces (RIS) offer a promising technology for global navigation satellite system (GNSS)-free drone localisation and for the alleviation of the jammer effect by nulling the jamming signal. In this letter, we investigate how to optimise the nullification of the jammer while maximising the desired signal in a double RIS-aided GNSS-free drone localisation setup. The main objectives of the presented procedure are the maximisation of the desired signal received by the drone, minimisation of the jamming signal effect, accurate estimation of the angle of departure (AOD) from RIS to drone, and drone positioning in 3D. To address this challenge, we propose an alternating projection algorithm to perform jamming nullification by optimising the phase shift at each RIS element. Simulations show that by proper RIS element phase optimisation, the effect of the jammer is efficiently reduced, the AODs from RIS surfaces to drone are computed more accurately, and the drone 3D localisation accuracy is improved.</p>","PeriodicalId":11556,"journal":{"name":"Electronics Letters","volume":"61 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/ell2.70368","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144705410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
FPGA Implementation of a Chopper Controller in PV Systems for IoT Applications 物联网应用光伏系统斩波控制器的FPGA实现
IF 0.7 4区 工程技术
Electronics Letters Pub Date : 2025-07-24 DOI: 10.1049/ell2.70364
Keyvan Barati, Abdolsamad Hamidi
{"title":"FPGA Implementation of a Chopper Controller in PV Systems for IoT Applications","authors":"Keyvan Barati,&nbsp;Abdolsamad Hamidi","doi":"10.1049/ell2.70364","DOIUrl":"https://doi.org/10.1049/ell2.70364","url":null,"abstract":"<p>This work presents the design and simulation of an Field-Programmable Gate Array (FPGA) based digital controller for a micro-power photovoltaic (PV) energy harvesting system tailored to Internet of Things (IoT) applications. The proposed system features a DC-DC boost converter with an H-bridge topology, designed to interface effectively with low-power PV sources and deliver regulated output to IoT loads. A constant voltage maximum power point tracking (CV-MPPT) algorithm is implemented to maintain optimal energy extraction under variable irradiance. The controller dynamically adjusts the chopping frequency, duty cycle, and output voltage. Leveraging the parallelism and reconfigurability of FPGAs, a high-speed digital control architecture is developed and synthesised on a Cyclone IV FPGA platform. Compared to conventional microcontroller or DSP-based solutions, this approach offers significantly improved response time, power efficiency, and scalability. The final implementation achieves a chip area of 0.92 mm<sup>2</sup>, a control loop delay of 106 ms, and an overall efficiency of 92.36%, demonstrating its advantages over existing designs in terms of compactness, performance, and energy efficiency.</p>","PeriodicalId":11556,"journal":{"name":"Electronics Letters","volume":"61 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/ell2.70364","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144687870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Identification of objects using their natural resonant complex frequencies under low signal-to-noise ratio conditions 在低信噪比条件下利用物体的自然共振复频率进行识别
IF 0.7 4区 工程技术
Electronics Letters Pub Date : 2025-07-24 DOI: 10.1049/ell2.70152
Yonggang Li, Haoyi Zhang, Yongjing Zhou, Weigang Zhu, Suqin Wu
{"title":"Identification of objects using their natural resonant complex frequencies under low signal-to-noise ratio conditions","authors":"Yonggang Li,&nbsp;Haoyi Zhang,&nbsp;Yongjing Zhou,&nbsp;Weigang Zhu,&nbsp;Suqin Wu","doi":"10.1049/ell2.70152","DOIUrl":"https://doi.org/10.1049/ell2.70152","url":null,"abstract":"<p>Here, a target recognition method of natural resonant complex frequency under low Signal-to-Noise Ratio (SNR) is proposed, mainly to solve the problem that natural resonant frequency is greatly affected by noise while the recognition accuracy is low. This method designs a recognition approach for natural resonant complex frequency by studying the characteristics of natural resonant complex frequency and integrating high-order spectrum analysis. Through theoretical analysis of the feasibility of natural resonant complex frequency bispectral transformation, the introduction of the natural resonance decay factor into target recognition is pioneered, providing a novel processing approach for identifying natural resonant complex frequencies.</p>","PeriodicalId":11556,"journal":{"name":"Electronics Letters","volume":"61 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/ell2.70152","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144687872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Longitudinal and Feedforward Controller Design Based on Linear Matrix Inequalities for a Mini Aerial Vehicle 基于线性矩阵不等式的小型飞行器纵向前馈控制器设计
IF 0.7 4区 工程技术
Electronics Letters Pub Date : 2025-07-24 DOI: 10.1049/ell2.70365
Saeedreza Tofighi
{"title":"Longitudinal and Feedforward Controller Design Based on Linear Matrix Inequalities for a Mini Aerial Vehicle","authors":"Saeedreza Tofighi","doi":"10.1049/ell2.70365","DOIUrl":"https://doi.org/10.1049/ell2.70365","url":null,"abstract":"<p>This paper presents the design of a multi-input multi-output (MIMO) optimal proportional–integral–derivative (PID) controller and a feedforward controller to enhance disturbance rejection and reference tracking in a mini aerial vehicle (MAV). The feedback controller is developed using linear matrix inequality (LMI) constraints within an iterative framework for tuning the PID parameters. In addition, a feedforward control strategy is proposed to further improve performance in reference tracking and disturbance rejection. The feedforward controller is designed under LMI constraints to minimise the H<sub>∞</sub> norm of the transfer function matrix relating disturbances (or set-points) to the output (error). This optimisation problem is challenging due to its non-convex and nonlinear nature. Therefore, the main contribution of this paper is to propose a method based on utilising frequency sampling techniques, iterative algorithms and convex optimisation formulation to guarantee optimal solutions for reference tracking and disturbance rejection within specified constraints, which is crucial for preventing irreversible damage in control systems and also enhances the manoeuvrability of the MAV.</p>","PeriodicalId":11556,"journal":{"name":"Electronics Letters","volume":"61 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/ell2.70365","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144687874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
CFIPC-YOLO for Concealed Object Detection in Millimetre Wave Images 基于CFIPC-YOLO的毫米波图像隐藏目标检测
IF 0.7 4区 工程技术
Electronics Letters Pub Date : 2025-07-22 DOI: 10.1049/ell2.70367
Huakun Zhang, Lin Guo, Deyue An,  Odbal
{"title":"CFIPC-YOLO for Concealed Object Detection in Millimetre Wave Images","authors":"Huakun Zhang,&nbsp;Lin Guo,&nbsp;Deyue An,&nbsp; Odbal","doi":"10.1049/ell2.70367","DOIUrl":"https://doi.org/10.1049/ell2.70367","url":null,"abstract":"<p>Human body security inspection is a critical task, and most existing methods rely on millimetre-wave images to detect concealed objects. However, detecting small and dim objects remains a significant challenge due to their subtle visual characteristics. To address this issue, this study proposes an efficient model, CFIPC-YOLO (contextual features integrated progressive convergence network based on the YOLOv8), which integrates local and contextual features into a progressively converging framework based on YOLO. Experimental results show that CFIPC-YOLO achieves a 5.3% improvement in AP50 compared to the YOLOv8 baseline, while simultaneously reducing the number of parameters by 17%, confirming the model's superior performance.</p>","PeriodicalId":11556,"journal":{"name":"Electronics Letters","volume":"61 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/ell2.70367","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144673066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信