Electronics Letters最新文献_第8页

Dynamic state estimation of distribution network under Markov DOS attack 马尔可夫 DOS 攻击下的配电网络动态状态估计

IF 0.7 4区工程技术

Electronics Letters Pub Date : 2024-09-24 DOI: 10.1049/ell2.70023

Yihe Wang, Na Zhang, Fangyuan Yang, Shuo Yang, Bo Yang, Huan Wang

引用次数: 0

Modified FDM with cartesian expansions for electromagnetic scattering from PEC targets 针对 PEC 目标电磁散射的修正 FDM 与笛卡尔展开

IF 0.7 4区工程技术

Electronics Letters Pub Date : 2024-09-24 DOI: 10.1049/ell2.70045

Qiong Wang, Jun Wang

引用次数: 0

Posterior Cramér–Rao lower bounds for extended target tracking with PMBM conjugate recursion 利用 PMBM 共轭递推进行扩展目标跟踪的后验克拉梅尔-拉奥下界

IF 0.7 4区工程技术

Electronics Letters Pub Date : 2024-09-24 DOI: 10.1049/ell2.70041

Xingxiang Xie, Xiongwei Zhao, Zhumei Song, Kening Li

引用次数: 0

Subarray partition based on sparse array weighted K-means clustering 基于稀疏阵列加权 K 均值聚类的子阵列划分

IF 0.7 4区工程技术

Electronics Letters Pub Date : 2024-09-23 DOI: 10.1049/ell2.70042

Jiayu Zhao, Jianming Huang, Yansong Cui, Naibo Zhang, Yuxuan Wang, Zilai Wang

{"title":"Subarray partition based on sparse array weighted K-means clustering","authors":"Jiayu Zhao, Jianming Huang, Yansong Cui, Naibo Zhang, Yuxuan Wang, Zilai Wang","doi":"10.1049/ell2.70042","DOIUrl":"https://doi.org/10.1049/ell2.70042","url":null,"abstract":"This paper introduces the subarray partition based on the sparse array weighted K-means clustering method, which extends the conventional K-means clustering method through the inclusion of a weight matrix approach. This matrix is derived by recording the frequency of each element's occurrence across multiple independent sparse arrays, thereby generating a frequency matrix. The performance of SWKCM is demonstrated through simulations and comparisons with four similar methods. To assess the effectiveness and superiority of the SWKCM, it is applied to the subarray partition of a 40×40 uniform planar phased array and compared with the other four methods. The simulation results show that the proposed SWKCM method maintains comparable sidelobe suppression capabilities to those of KCM, achieving a normalized peak sidelobe level of -43.1076 dB. Furthermore, compared to the K-means clustering method, the sparse array weighted K-means clustering method significantly enhances the stability of subarray partition outcomes, as evidenced by a reduction in the peak sidelobe level standard deviation from 1.0991 to 0.8104, resulting in a 26.3% decrease in variability.","PeriodicalId":11556,"journal":{"name":"Electronics Letters","volume":"60 18","pages":""},"PeriodicalIF":0.7,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/ell2.70042","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142313386","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

Reconfigurable intelligent surface enabled programmable antenna chamber: Concept and preliminary experiments 可重构智能表面启用可编程天线室：概念和初步实验

IF 0.7 4区工程技术

Electronics Letters Pub Date : 2024-09-22 DOI: 10.1049/ell2.70019

Yifa Li, Fengchun Zhang, Kim Olesen, Zhinong Ying, Gert Frølund Pedersen, Wei Fan

{"title":"Reconfigurable intelligent surface enabled programmable antenna chamber: Concept and preliminary experiments","authors":"Yifa Li, Fengchun Zhang, Kim Olesen, Zhinong Ying, Gert Frølund Pedersen, Wei Fan","doi":"10.1049/ell2.70019","DOIUrl":"https://doi.org/10.1049/ell2.70019","url":null,"abstract":"Antenna chambers are RF-shielded enclosures which are required for antenna and radio performance measurements. Typically, anechoic chambers (ACs) are used for measuring directional metrics (e.g. antenna pattern, effective isotropic power etc.), while reverberation chambers (RCs) are widely used for non-directional measurements (e.g. antenna efficiency, total radiated power etc.). When a device under test requires both types of measurements, testing needs to be conducted sequentially in an AC and an RC. This leads to significant time inefficiencies due to the need to set up and calibrate two separate measurement setups in two different chambers. To address these issues, this letter proposes a programmable chamber framework capable of electronically switching between AC and RC modes by programming the reflective intelligent surface-enabled sidewalls. This framework is highly attractive for the industry as it supports both directional and non-directional measurements within a single chamber. The letter outlines the conceptual framework, discusses design considerations, and presents preliminary experimental validation of reflective intelligent surface-enabled sidewall with the designed phase-setting configurations to emulate the radio absorber sidewall of an AC and the metal plate sidewall of an RC. The experimental results demonstrate the effectiveness and potential of the proposed approach.","PeriodicalId":11556,"journal":{"name":"Electronics Letters","volume":"60 18","pages":""},"PeriodicalIF":0.7,"publicationDate":"2024-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/ell2.70019","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142313381","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

Brain–computer interface for simultaneous dual-region spatial coding in hippocampal and somatosensory cortex of freely behaving rats 在自由行为大鼠的海马和体感皮层同时进行双区空间编码的脑机接口

IF 0.7 4区工程技术

Electronics Letters Pub Date : 2024-09-17 DOI: 10.1049/ell2.70013

Ming Li, Wei Xu, Zhaojie Xu, Fan Mo, Gucheng Yang, Shiya Lv, Hanwen Cao, Juntao Liu, Xinxia Cai

{"title":"Brain–computer interface for simultaneous dual-region spatial coding in hippocampal and somatosensory cortex of freely behaving rats","authors":"Ming Li, Wei Xu, Zhaojie Xu, Fan Mo, Gucheng Yang, Shiya Lv, Hanwen Cao, Juntao Liu, Xinxia Cai","doi":"10.1049/ell2.70013","DOIUrl":"https://doi.org/10.1049/ell2.70013","url":null,"abstract":"Decoding of spatial information from place cells is currently limited to individual brain regions, severely constraining the understanding of the brain's spatial navigation mechanisms. In this study, synchronized detection of dual-brain region spatial encoding was conducted using brain–computer interface (BCI). Therefore, an implantable microelectrode array (MEA) was developed tailored for the simultaneous detection of neuronal activities in the CA1 of the hippocampus and the Barrel Cortex (BC) of the somatosensory cortex in rats as BCI. The MEA was improved by modifying the nanocomposite PtNP/PEDOT:PSS to improve their electrical properties (reducing impedance from 1.82 ± 0.17 MΩ to 3.4 ± 0.3 kΩ), facilitating neural recordings in freely behaving rats. The neural activities were obtained from the CA1 and the BC simultaneously and validated the existence of place cells in both brain regions. This study highlighted the potential of PtNP/PEDOT:PSS-modified MEA as BCI in concurrently detecting neural activity associated with spatial encoding in two brain regions, offering novel perspectives on the processing of tactile stimuli and the formation of cognitive maps for navigation.","PeriodicalId":11556,"journal":{"name":"Electronics Letters","volume":"60 18","pages":""},"PeriodicalIF":0.7,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/ell2.70013","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142244397","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

Height-dependent LoS probability model for A2G channels incorporating airframe shadowing under built-up scenario 在建筑密集场景下，A2G 信道的 LoS 概率模型与机身阴影高度有关

IF 0.7 4区工程技术

Electronics Letters Pub Date : 2024-09-17 DOI: 10.1049/ell2.70032

Farman Ali, Yinglan Pan, Qiuming Zhu, Naeem Ahmad, Kai Mao, Habib Ullah

{"title":"Height-dependent LoS probability model for A2G channels incorporating airframe shadowing under built-up scenario","authors":"Farman Ali, Yinglan Pan, Qiuming Zhu, Naeem Ahmad, Kai Mao, Habib Ullah","doi":"10.1049/ell2.70032","DOIUrl":"https://doi.org/10.1049/ell2.70032","url":null,"abstract":"The line of sight (LoS) probability is a key factor for the channel modeling of air-to-ground (A2G) communication. However, the existing LoS probability models do not account for the effects of airframe shadowing (AS) and building density, which can cause serious link obstruction and performance loss due to the six-dimensional (6D) mobility and self-body of unmanned aerial vehicle (UAV). In this article, a new LoS probability model is proposed that considers the AS and building density for different UAV heights. Adding to this, the AS is derived in terms of UAV framework and 6D mobility. Next, the machine learning (ML) based graph neural network (GNN) method is developed to learn the features and structure of the urban environment and predict the LoS probability. Then, the GNN model is trained and evaluated based on the ray tracing (RT) data to establish the relationship between model parameters and UAV heights under the building density and AS factors. The interpretation and explanation of the proposed GNN model and prediction are also discussed in this article. It is shown from the simulation analysis that the GNN model accurately captures the effects of AS, building height distributions, and UAV heights, with high accuracy compared to the baseline 3GPP, GCM and NYU models.","PeriodicalId":11556,"journal":{"name":"Electronics Letters","volume":"60 18","pages":""},"PeriodicalIF":0.7,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/ell2.70032","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142244398","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

Distributed beamforming design for UAV-based integrated communication and jamming systems 无人机综合通信与干扰系统的分布式波束成形设计

IF 0.7 4区工程技术

Electronics Letters Pub Date : 2024-09-17 DOI: 10.1049/ell2.70031

Jiteng Liu, Guoru Ding, Yitao Xu, Haichao Wang, Jiangchun Gu

{"title":"Distributed beamforming design for UAV-based integrated communication and jamming systems","authors":"Jiteng Liu, Guoru Ding, Yitao Xu, Haichao Wang, Jiangchun Gu","doi":"10.1049/ell2.70031","DOIUrl":"https://doi.org/10.1049/ell2.70031","url":null,"abstract":"The integrated communication and jamming system is proposed by exploiting the diversity gain and flexible deployment of unmanned aerial vehicle (UAV)-based distributed multiple input multiple output technology, which is expected to gain higher spectral efficiency and system scalability. This paper designs transmit beamforming of multiple UAVs so that they can simultaneously impose jamming signal to jamming targets and communication signal to communication users at the same frequency. The aim is to maximize the total jamming effect of all jamming targets while achieving a certain communication rate of communication users by optimizing the transmit beamforming matrices. Two cases are considered in which the UAV swarm works in clock synchronization and clock asynchronization. Specifically, the problem is formulated into a non-convex optimization in the synchronous case. A near optimal solution is derived by decoupling the beamforming matrix into multi-user interference suppression matrix and single-user beamforming matrix. In the asynchronous case, the transmitter–receiver matching relation needs to consider and multiple optimization variables are highly coupled, penalty factors and intermediate variables to convert the optimization problem to convex programming are introduced. The simulation results show that the proposed beamforming design algorithm coordinates the communication and jamming signal rationally and outperforms the conventional beamforming design algorithms.","PeriodicalId":11556,"journal":{"name":"Electronics Letters","volume":"60 18","pages":""},"PeriodicalIF":0.7,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/ell2.70031","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142244396","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

Joint waveform design of radar detection, wireless communication and jamming based on chaotic composite modulation 基于混沌复合调制的雷达探测、无线通信和干扰联合波形设计

IF 0.7 4区工程技术

Electronics Letters Pub Date : 2024-09-17 DOI: 10.1049/ell2.70033

Jun Chen, Meng Wang, Jie Wang, Fei Wang, Huiyu Zhou

引用次数: 0

Modelling and compensation of rate-dependent hysteresis in piezoelectric actuators based on a modified Madelung model 基于改良马德隆模型的压电致动器速率相关性滞后建模与补偿

IF 0.7 4区工程技术

Electronics Letters Pub Date : 2024-09-16 DOI: 10.1049/ell2.70027

Rui Li, Kairui Cao, Zekun Li

引用次数: 0