Chinese Journal of Electronics最新文献

{"title":"A Robust Reliability-Centric Method for Swift Spoofing Signal Detection in Advanced GNSS Security","authors":"Xiang Li;Hao Zhang;Xuhui Yu;Wei Liu","doi":"10.23919/cje.2023.00.406","DOIUrl":"https://doi.org/10.23919/cje.2023.00.406","url":null,"abstract":"Global navigation satellite systems (GNSSs) have been proven to be susceptible to spoofing signals, presenting a significant threat to the security and stability of nations and societies. Signal quality monitoring (SQM) can be utilized to identify spoofing attacks on GNSS signals. However, traditional SQM metrics exhibit inadequate responsiveness and resolution in detecting spoofing signals, and further the multi-correlator technology based on the traditional SQM metrics needs too high computation cost and still ignores abnormal power problem in the spoofing process. To address these issues, this paper proposed a novel spoofing detection method based on reliability theory for assessing the reliability of GNSS signals. A third-order central moment of GNSS signal correlation peak outputs is selected as the characteristic state equation, and then the reliability metric of GNSS signals is calculated by using the mathematical expectations and standard deviations of the characteristic state equation so as to determine the degree of distortion. After the intermediate spoofing interference dataset of Texas Spoofing Test Battery (TEXBAT) is analyzed experimentally, the proposed reliability metric is demonstrated to detect the presence of spoofing interference more rapidly, thereby mitigating irreversible harm. Additionally, it exhibits superior detection performance, real-time capabilities, and enhanced robustness in terms of identifying spoofing attack.","PeriodicalId":50701,"journal":{"name":"Chinese Journal of Electronics","volume":"34 3","pages":"774-786"},"PeriodicalIF":1.6,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11060048","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144519283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-Resolution ISAR Imaging for Detection of Micro Damages on Spacecraft Thermal Protection System","authors":"Yihang Zhang;Xiao Wang","doi":"10.23919/cje.2023.00.339","DOIUrl":"https://doi.org/10.23919/cje.2023.00.339","url":null,"abstract":"The thermal protection system (TPS) is an essential component that guarantees the safe flight of high-speed spacecraft. However, the TPS is bound to suffer various level of damages during flight missions, among which the micro damages are difficult to distinguish from optical images. In this paper, we propose a novel approach to detect tiny surface damages of TPS for spacecraft by using inverse synthetic aperture radar (ISAR) imaging. To accomplish this, the procedure consists of three components: electromagnetic scattering simulation, 2-D ISAR imaging, and damage detection and identification. Different types of common TPS surface micro damages such as debonding, cracks, holes, and warpage are simulated. The obtained high-precision 2-D images prominently display the structure and morphology of micro damages. Finally, a relative entropy-based damage detection and identification method is proposed using the established damage characteristics database. The experimental results have demonstrated that by comparing the differences in the statistical characteristics between the damaged and undamaged models, the monitoring and identification of the micro damages can be successfully realized. Overall, the proposed approach offers a promising solution for monitoring the status of TPS in real time and enhancing the safety of high-speed spacecraft during flight missions.","PeriodicalId":50701,"journal":{"name":"Chinese Journal of Electronics","volume":"34 3","pages":"787-801"},"PeriodicalIF":1.6,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11060054","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144519340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"EASA: Fine-Tuning SAM with Edge Attention and Adapters for Image Manipulation Localization","authors":"Fan Zhang;Qiming Xu;Wei Hu;Fei Ma","doi":"10.23919/cje.2024.00.086","DOIUrl":"https://doi.org/10.23919/cje.2024.00.086","url":null,"abstract":"The Segment Anything Model (SAM) is gaining attention for various applications due to its success in precise segmentation and zero-shot inference across diverse datasets. The image manipulation localization (IML) task, facing a lack of high-quality, diverse datasets, could benefit from SAM's strong generalization ability. However, the unique nature of the IML task presents a significant challenge: the vast distributional disparity between IML data and conventional visual task data makes it seem implausible to effectively transfer a pretrained model like SAM to this task. Models typically either forget previous knowledge or fail to adapt to IML's unique data distribution due to structural mismatches. To address this, we introduce the edge-attention SAM-adapter (EASA), which overcomes catastrophic forgetting and effectively adapts to IML's unique data distribution. Specifically, our EASA method mitigates the issue of catastrophic forgetting by employing adapter tuning strategy and designs a novel edge-attention branch effectively captures the subtle traces of edge manipulations in manipulated regions. In our experiments across six public datasets, our method significantly enhances performance in IML tasks compared to state-of-the-art methods, thus showcasing the potential of SAM in various downstream tasks previously considered challenging.","PeriodicalId":50701,"journal":{"name":"Chinese Journal of Electronics","volume":"34 3","pages":"980-989"},"PeriodicalIF":1.6,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11060045","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144519351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dynamic Sitting Posture Recognition System Using Passive RFID Tags in Internet of Things","authors":"Jian Su;Shijie Chen","doi":"10.23919/cje.2023.00.354","DOIUrl":"https://doi.org/10.23919/cje.2023.00.354","url":null,"abstract":"The rapidly developing Internet of things technology is gradually being utilized to monitor people's unhealthy behaviors. Sedentary behavior and wrong sitting posture are common health issues that can detrimentally impact the physical and psychological health of teenagers. An effective way to promptly rectify improper sitting postures among teenagers is to use equipment to monitor and recognize the alterations of sitting posture. The majority of conventional sitting posture recognition methods rely on cameras or sensors to recognize sitting posture. The employment of cameras will violate user's privacy, and the utilization of sensors will increase the cost of implementation. A dynamic sitting posture recognition system based on commodity off-the-shelf (COTS) radio frequency identification (RFID) devices is proposed. This system can recognize six common erroneous sitting postures by simply sticking five passive RFID tags on the user's back. We collect phase and received signal strength indicator (RSSI) data of passive RFID tags, then transform them into Doppler shift and RSSI difference data respectively, and finally input them into the established deep residual neural network for the classification of sitting postures. The experiment results show that our system achieves an average recognition accuracy of 99.17% with six sitting postures and is highly robust to different users and different usage environments.","PeriodicalId":50701,"journal":{"name":"Chinese Journal of Electronics","volume":"34 2","pages":"586-599"},"PeriodicalIF":1.6,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10982073","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143900508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multi-Path Reasoning for Multi-Hop Question Answering over Knowledge Graph","authors":"Yana Lyu;Xutong Qin;Xiuli Du;Niujie Zhao;Shaoming Qiu","doi":"10.23919/cje.2023.00.044","DOIUrl":"https://doi.org/10.23919/cje.2023.00.044","url":null,"abstract":"Multi-hop question answering over knowledge graph (KGQA) aims to find the answer entities that are multiple hops away from the entities in the question called seed entities in the knowledge graph. The main methods include rule and template based methods and deep learning based methods. At present, deep learning based methods is in the mainstream, with the advantages of good portability and high utilization of knowledge graph information. A significant challenge is the lack of information on intermediate entities along the reasoning path. However, most deep learning models are unable to learn the correct reasoning path. To address this challenge, we propose a multi-path reasoning model, which selects the correct reasoning path by constraining the consistency of multiple paths from the seed entity to the answer entity. Then, a teacher-student network is adopted for model compression, where the teacher model relies on the proposed multi-path reasoning model. To demonstrate our model's effectiveness on the KGQA task, we compared our model with four baselines on two benchmark datasets. The experimental results revealed that the Hits@1 values of the model reached 77.8% and 60.2% on WebQuestionsSP and Complex WebQuestions 1.1 datasets, respectively.","PeriodicalId":50701,"journal":{"name":"Chinese Journal of Electronics","volume":"34 2","pages":"642-648"},"PeriodicalIF":1.6,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10982074","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143900564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Asynchronous Consensus Algorithm Integrating Dynamic Weight Sharding Strategy","authors":"Ao Xiong;Wang Zhang;Yu Song;Dong Wang;Da Li;Qinglei Guo;Desheng Bai","doi":"10.23919/cje.2023.00.313","DOIUrl":"https://doi.org/10.23919/cje.2023.00.313","url":null,"abstract":"Blockchain technology has broad application prospects in many fields due to its unique characteristics such as decentralization, traceability, and tamper-proofing, and has become a research hotspot in recent years. As a key component of blockchain technology, the consensus algorithm is one of the important factors affecting blockchain performance. Many consensus algorithms currently used in consortium chains are based on timing assumptions and lack horizontal scalability. That is to say, these algorithms cannot reach an agreement in an asynchronous network where the receiving time of network packets is uncertain, and their efficiency decreases as the number of nodes increases, which hinders the large-scale application of the consortium chain. In order to solve the above problems, this paper proposes the dynamic sharding Dumbo (DS-Dumbo) algorithm, an asynchronous consensus algorithm that integrates dynamic sharding strategies, based on the currently excellent Dumbo Byzantine fault tolerance (DumboBFT) asynchronous consensus algorithm. The main work of this paper revolves around how to fragment and optimize the consensus process. This paper designs a node asynchronous sharding model based on multi-dimensional weights, so that the re-sharding work of each blockchain node can be executed concurrently with the asynchronous consensus algorithm, reducing the conflict between blockchain sharding and asynchronous consensus algorithms. We also designed an intelligent transaction placement strategy, which calculates the relevance score of each transaction for all shards to determine which shard the transaction is processed in order to reduce the number of complex cross-shard transactions. We optimized the execution process of the DumboBFT algorithm, converted its internal synchronous working mode to an asynchronous working mode, and reduced the consumption of consensus work to a certain extent. The experimental evaluation shows that the DS-Dumbo algorithm has higher throughput and lower delay than the DumboBFT algorithm, can increase the throughput with the increase of nodes, and has the ability of horizontal expansion.","PeriodicalId":50701,"journal":{"name":"Chinese Journal of Electronics","volume":"34 2","pages":"600-611"},"PeriodicalIF":1.6,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10982076","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143900601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Multi-Granularity Task Scheduling Method for Heterogeneous Computing Resources","authors":"Han Li;Chenxi Xu;Zhuofeng Zhao;Mengyuan Liu","doi":"10.23919/cje.2023.00.378","DOIUrl":"https://doi.org/10.23919/cje.2023.00.378","url":null,"abstract":"In light of the rapid advancement of technologies related to the Internet of things (IoT), IoT service platforms have become one of the main solutions for providing intelligent and efficient services in the industrial sector. Scheduling is an effective means to match resources and guarantee quality of service. However, existing service scheduling models and methods have not fully considered the special needs of new IoT platforms. Therefore, this article summarizes the special requirements of the new IoT platform, including the heterogeneity of IoT service platform resources, complexity and diversity of tasks, as well as considering the demand for low energy consumption and low latency. Constructed a multi-granularity task scheduling model for cloud-edge collaborative environments, which takes the special needs mentioned above into account. Combined with priority experience replay and importance sampling, a task scheduling algorithm priority replay with importance-based method in Actor Critic (PRIME-AC) based on deep reinforcement learning is proposed. The experimental results show that PRIME-AC has better performance in both task execution delay and load balancing than other baselines.","PeriodicalId":50701,"journal":{"name":"Chinese Journal of Electronics","volume":"34 2","pages":"630-641"},"PeriodicalIF":1.6,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10982077","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143900614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"String Stability of Vehicle Platoon with Packet Loss in NR-V2X","authors":"Ruirui Ning;Siyu Lin;Xi Wang;Xiaokang Zhang;Weiyang Feng;Ning Zhang","doi":"10.23919/cje.2023.00.273","DOIUrl":"https://doi.org/10.23919/cje.2023.00.273","url":null,"abstract":"The vehicle platoon refers to the dynamic formation of a group of vehicles to drive with a certain spacing between vehicles, which is an important enhanced application scenario of cellular vehicle-to-everything (C-V2X). Through the C-V2X technology, the real-time interaction of vehicle motion status information and driving strategy of the vehicle platoon can be realized. In addition, benefit from vehicle-to-vehicle (V2V) communication, vehicle platoon can reduce the headway and expand the road capacity. However, in the process of vehicle-to-everything communication, packet loss is inevitable, which affect the stable operation of vehicle platoon and make it a challenge to the design of efficient vehicle platoon strategy. In response to the above challenge, this paper proposes an analytical framework that investigates the influence of the packet loss in new radio vehicle-to-everything (NR-V2X) mode 2 on the string stability of the vehicle platoon. Firstly, the packet loss in NR-V2X mode 2 is analyzed, and an analytical model is presented to depict the relationship between the packet delivery probability and the intra-platoon spacing with the aid of stochastic geometry. Then, the influence of packet loss in NR-V2X mode 2 on the string stability of the vehicle platoon is depicted, and the time headway boundary value under the condition of ensuring the string stability is deduced when the number of connected predecessors varies. Theoretical analysis and simulation verification of the proposed model are carried out. Design insights are given for efficient platoon strategy by increasing the number of connected predecessors and improving packet delivery probability to achieve short time headway and thus high road capacity.","PeriodicalId":50701,"journal":{"name":"Chinese Journal of Electronics","volume":"34 2","pages":"683-697"},"PeriodicalIF":1.6,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10982093","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143900639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Performance Enhancement of InGaN/GaN MQWs with n-AlGaN Interlayer Grown on Nano-Patterned Sapphire Substrate","authors":"Ying Zhao;Yuanfu Zhao;Xiaofei Kang;Kaili Xiong;Long Zhang;Xiangfa Chen","doi":"10.23919/cje.2024.00.204","DOIUrl":"https://doi.org/10.23919/cje.2024.00.204","url":null,"abstract":"The lateral light emitting diodes (LEDs) fabricated on insulated sapphire substrate usually suffer current crowding effect, which would lead to a serious degeneration of luminescence properties and reliability issues. To relieve the current crowding effect and improve the device performance, n-AlGaN interlayers with gradual changing Al fractions were introduced into the n-GaN layer of the green LEDs. The gradually decreased Al composition in the introduced n-AlGaN interlayer resulted in a barrier in the conduction band, which could promote a more uniform distribution of electrons along the horizontal direction and then reduce the current crowding effect. In addition, the AlGaN/GaN heterojunction produced large amounts of two-dimensional electron gas at the interface, which could balance the electron distribution at the AlGaN/GaN interface and reduce the current crowding effect as well. The introduced current spreading process improved the luminescence intensity of LED. Ultimately, electroluminescence spectra were measured and confirmed the improved luminescence intensity via gradually decreased Al composition in the introduced n-AlGaN interlayer.","PeriodicalId":50701,"journal":{"name":"Chinese Journal of Electronics","volume":"34 3","pages":"749-754"},"PeriodicalIF":1.6,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11060020","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144519224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Threshold-Bad-Scenario-Set Robust Energy Trading Decisions for Interconnected Microgrids Under Uncertain Electricity Price","authors":"Xiaozhi Wang;Bing Wang;Hengdu Hu;Baomin Qi;Quanke Pan","doi":"10.23919/cje.2023.00.364","DOIUrl":"https://doi.org/10.23919/cje.2023.00.364","url":null,"abstract":"Microgrids can be cost-effective by reducing transmission and distribution losses, and enabling energy trading between microgrids can further optimize economic benefits. This paper discusses the energy trading decision problem of interconnected microgrids under an uncertain electricity price between any microgrid and the main grid. The uncertain energy trading price is described by discrete scenarios. The interests of individual microgrids and the shared benefits generated from cooperation among microgrids are considered. Based on the threshold-bad-scenario (TBS) set concept proposed in our previous work, we propose a robust energy trading model. The TBS-set robust energy trading problem actually consists of a family of robust energy trading problems. Each robust energy trading problem is decomposed into two subproblems: social robust cost minimization and trading payment. The alternating direction method of multipliers is applied to develop a distributed algorithm to solve the problem. The computational results show that the robust energy trading strategy can reduce the total cost of society by 8.89% and the cost of individual microgrids can be reduced by up to 12.34%. The proposed robust energy trading model can obtain various robust solutions with different degrees of tradeoff between robustness and optimality. The robustness prices of the robust solutions obtained are discussed to indicate the impact of the threshold values on the robustness prices.","PeriodicalId":50701,"journal":{"name":"Chinese Journal of Electronics","volume":"34 3","pages":"929-936"},"PeriodicalIF":1.6,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11060056","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144519337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}