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International Applied Computational Electromagnetics Society Symposium (ACES)

作者： Muchen He Qinyan Tan Ying Zhang Huapeng Zhao School of Information and Communication Engineering University of Electronic Science and Technology of China Chengdu China Shanghai Aerospace Control Technology Institute of China Aerospace Science and Technology Corporation Chengdu China School of Electronic Science and Engineering University of Electronic Science and Technology of China Chengdu China

In the field of multi-band fusion imaging, multi-band coherent registration will directly affect the final imaging result. In this paper, the influence of incoherent factors such as target velocity and system error on the high resolution range profile(HRRP) is quantitatively analyzed. Aiming at solving the distortion problem of HRRP, based on image entropy and compressed sensing theory, velocity compensation algorithm and system error compensation algorithm are designed to compensate the additional phases generated by incoherent factors, which restore the real HRRP and make lower and upper bands achieve coherence. Simulation verifies the effectiveness of the compensation algorithms.

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Polarimetric Dark Channel Prior Descattering

SSRN

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SSRN 2023年

作者： Guan, Jinge Huo, Yongsheng Ma, Miao School of Information and Communication Engineering North University of China Taiyuan030051 China Department of Science Taiyuan Institute of Technology Taiyuan030008 China State Key Laboratory of Dynamic Measurement Technology North University of China Taiyuan030051 China

For traditional dark channel prior (DCP) imaging through scattering environments, intensity information acts as the carrier to acquire the reflective character of the descattered object image. The main problem is that when the target and its surrounding background have the same or similar reflectivity, it is difficult to discriminate them from each other in the traditional DCP method. Here, the vector nature of light is employed to overcome this problem. We introduce polarization as auxiliary information into the traditional DCP descattering process for achieving better imaging performance, the effectiveness of which is further verified by experiments. The results show that in turbid conditions, the proposed polarimetric DCP descattering method could not only suppress the scatter noise but also be capable of obtaining a combination of intensity and polarization information. The investigation in this paper could enhance the contrast between the target and the background based on significant difference in depolarization of them, which improves the efficiency of optical target detection and recognition through turbid media. © 2023, The Authors. All rights reserved.

关键词： Optical data processing

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Optimal Minimum Energy Path Planning of Mobile Robot Based on Improved WOA-GA with Hybrid Strategy for Community-Centric Application

Optimal Minimum Energy Path Planning of Mobile Robot Based o...

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2023 International Conference on Machine Learning and Cybernetics, ICMLC 2023

作者： Du, Jiang Da-Lin, Zhou Gong-Fa, Li Bao-Li, Lu Jun-Tong, Yun Ying, Liu Wuhan University of Science and Technology Key Laboratory of Metallurgical Equipment and Control Technology Ministry of Education Wuhan430081 China School of Computing University of Portsmouth PortsmouthPO1 3HE United Kingdom China Three Gorges University Hubei Key Laboratory of Hydroelectric Machinery Design & Maintenance Yichang443002 China Wuhan University of Science and Technology Key Laboratory of Mechanical Transmission and Manufacturing Engineering of Hubei Province Wuhan430081 China Precision Manufacturing Research Institute Wuhan University of Science and Technology Wuhan430081 China Institute of Semiconductors Chinese Academy of Sciences Beijing100083 China Research Center for Biomimetic Robot and Intelligent Measurement and Control Wuhan University of Science and Technology Wuhan430081 China

ISBN: (纸本)9798350303780

The path planning of mobile robots is investigated to minimize energy loss in intelligent manufacturing. To achieve optimal energy consumption planning, this paper proposes a hybrid strategy that enhances the whale optimization algorithm (WOA) and the genetic algorithm (GA). The WOA-GA algorithm combines their respective advantages and effectively mitigates premature convergence exhibited by the standard traditional algorithm. To enhance the global and local search capabilities of the standard WOA, we employ adaptive weighting and a Cauchy mutation strategy. Additionally, we introduce an adaptive crossover mutation probability and an elite strategy to mitigate the detrimental effects of the genetic algorithm's evolutionary operation in the late iterations, thereby improving its performance. This paper compares the performance of the standard GA, the standard WOA-GA algorithm, and the enhanced WOA-GA algorithm. The experimental results demonstrate that the enhanced WOA-GA algorithm can achieve optimal energy-efficient path planning using the hybrid strategy. The average energy consumption of the enhanced WOA-GA algorithm can be reduced by 30%, while the maximum energy consumption can be reduced by 47%. The results confirm the effectiveness and feasibility of the proposed method in enhancing the level of green manufacturing. © 2023 IEEE.

关键词： Genetic algorithms

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Research on Space-Time Block Code technology in MIMO System 7

Research on Space-Time Block Code Technology in MIMO System

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7th International Conference on Computer and communications, ICCC 2021

作者： Pan, Conglin Chen, Si Wu, Wei Qian, Jiachuan Wang, Lijun No.36 Research Institute of CETC Science and Technology On Communication Information Security Control Laboratory Jiaxing China School of Electronic and Optical Engineering Nanjing University of Science and Technology Nanjing China

ISBN: (纸本)9781665409506

MIMO technology has been widely used in the telecommunication systems nowadays, and the space-time coding is a key part of MIMO technology. A good coding scheme can exploit the spatial diversity to correct the error which is generated in transmission, and increase the normalized transfer rate with low decoding complexity. On the Basis of the research on different Space-Time Block Codes, this essay proposes a new STBC, Diagonal Block Orthogonal Space-Time Block Code. Then we will compare it with other STBCs in the performance of bit error rate, transfer rate, decoding complexity and peek-to-average power ratio, the final result will prove the superiority of DBOAST. © 2021 IEEE.

关键词： MIMO systems

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Global Viv and Local Noise Propagation Analysis of a Mooring Submersible Buoy System

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SSRN 2023年

作者： Zhang, Qin Chen, Tingwei Zhang, Xuegang Lv, Shuai Song, Xiancang College of Engineering Ocean University of China Qingdao266100 China Dalian Measurement and Control Technology Research Institute China Shipbuilding Industry Group Co. Ltd. Dalian116013 China

This paper proposes an analysis method/procedure to investigate a 900m MSB system’s global vortex-induced vibration(VIV) and local noise propagation. Firstly, the static attitude of the MSB system is calculated by the lumped mass model. Then, the MSB system’s global VIV motion is simulated by a selected semi-empirical model. Thirdly, extracting the displacement at the hydrophone from the global VIV motion as the moving boundary condition, the k-ω SST-IDDES turbulence model is used for local hydrodynamic simulation. Finally, the Ffowcs Williams and Hawkings(FW-H) method is used to analyse the noise propagation with the hydrophone wall as the sound source. Each step has been verified respectively. The results show that the equipment suspended on the mooring line can suppress the vibration amplitude of the mooring line. Under flow velocity conditions, the vibration frequency will mutate at the position where the equipment exists. For the noise propagation results, the sound pressure will decay slowly with the increase in distance. The sound pressure level(SPL) peak frequency in each condition corresponds to the VIV frequency at the hydrophone. It can be found that the SPL curve shows a trend of expanding first and then shrinking comparing the directivity curves of different flow velocity conditions(0.25~1.5m/s). © 2023, The Authors. All rights reserved.

关键词： Hydrophones

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Polarimetric Dark Channel Prior Descattering

SSRN

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SSRN 2023年

作者： Guan, Jinge Ma, Miao Huo, Yongsheng School of Information and Communication Engineering North University of China Taiyuan030051 China Department of Science Taiyuan Institute of Technology Taiyuan030008 China State Key Laboratory of Dynamic Measurement Technology North University of China Taiyuan030051 China

关键词： Optical data processing

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Semantic Structural and Occlusive Feature Fusion for Pedestrian Detection 18th

Semantic Structural and Occlusive Feature Fusion for Pedestr...

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18th Pacific Rim International Conference on Artificial Intelligence, PRICAI 2021

作者： Wang, Hui Zhang, Yu Ke, Hongchang Wei, Ning Xu, Zhongyu The College of Computer Science and Engineering Changchun University of Technology Changchun130012 China The School of Computer Technology and Engineering Changchun Institute of Technology Changchun130012 China National and Local Joint Engineering Research Center for Intelligent Distribution Network Measurement Organization Control and Safe Operation Technology of National Development and Reform Commission Changchun Institute of Technology Changchun130012 China

ISBN: (纸本)9783030891879

Pedestrian detection under occlusion scenes remains a formidable challenge in computer vision. Recently, anchor-free approach has been raised on the object detection and pedestrian detection field, anchor-free detector Center and Scale Prediction (CSP) has been proposed in pedestrian detection without special measures for occlusion. In this paper, we propose an anchor-free detector named OCSP with power ful occlusion handling ability to existing anchor-free detection network. OCSP integrates prior information into the network to handle occlusion. This high-fusion prior information gives the detector a hint about identifying the structural features of pedestrians. OCSP becomes more robust with the prior information which fusion the semantic head, the visible part, and the size and center body for each pedestrian. The detector enhances the perception of occlusion by predicting the semantic head and visible part. Besides, we design a head branch and add predicting the visible box to achieve a similar result. Experiments show that this fusion of prior information represents a suitable combination. We compare our OCSP with state-of-arts models on the Citypersons dataset, the proposed OCSP detector achieves the state-of-arts result on the CityPersons benchmark. © 2021, Springer Nature Switzerland AG.

关键词： Semantics

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Relay Satellite Assisted LEO Constellation NOMA communication System

arXiv

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arXiv 2024年

作者： Zhang, Xuyang Yue, Xinwei Han, Zhihao Li, Tian Shen, Xia Wang, Yafei Liu, Rongke Key Laboratory of Information and Communication Systems Ministry of Information Industry China Key Laboratory of Modern Measurement & Control Technology Ministry of Education Beijing Information Science and Technology University Beijing100101 China 54th Research Institute of China Electronics Technology Group Corporation Shijiazhuang Hebei050081 China Beijing100191 China School of Electronic and Information Engineering Beihang University Beijing100191 China Shenzhen Beihang Emerging Industry Technology Research Institute Shenzhen518063 China

This paper proposes a relay satellite assisted low earth orbit (LEO) constellation non-orthogonal multiple access combined beamforming (R-NOMA-BF) communication system, where multiple antenna LEO satellites deliver information to ground non-orthogonal users. To measure the service quality, we formulate a resource allocation problem to minimize the second-order difference between the achievable capacity and user request traffic. Based on the above problem, joint optimization for LEO satellite-cell assignment factor, NOMA power and BF vector is taken into account. The optimization variables are analyzed with respect to feasibility and non-convexity. Additionally, we provide a pair of effective algorithms, i.e., doppler shift LEO satellite-cell assisted monotonic programming of NOMA with BF vector (D-mNOMA-BF) and ant colony pathfinding based NOMA exponential cone programming with BF vector (A-eNOMA-BF). Two compromise algorithms regarding the above are also presented. Numerical results show that: 1) D-mNOMA-BF and A-eNOMA-BF algorithms are superior to that of orthogonal multiple access based BF (OMA-BF) and polarization multiplexing schemes;2) With the increasing number of antennas and single satellite power, R-NOMA-BF system is able to expand users satisfaction;and 3) By comparing various imperfect successive interference cancellation, the performance of A-mNOMA-BF algorithm exceeds D-mNOMA-BF. Copyright © 2024, The Authors. All rights reserved.

关键词： Satellite communication systems

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Efficient Wi-Fi AP Localization through Channel Feature Fusion and Anomaly Detection

Efficient Wi-Fi AP Localization through Channel Feature Fusi...

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IEEE Conference on Wireless communications and Networking

作者： Yan Li Jie Yang Shang-Ling Shih Wan-Ting Shih Chao-Kai Wen Shi Jin National Mobile Communications Research Laboratory Southeast University Nanjing China Frontiers Science Center for Mobile Information Communication and Security Nanjing China Key Laboratory of Measurement and Control of Complex Systems of Engineering Ministry of Education Southeast University Nanjing China Institute of Communications Engineering National Sun Yat-sen University Kaohsiung Taiwan

ISBN: (数字)9798350303582

ISBN: (纸本)9798350303599

Wi-Fi access point (AP) and IoT device localization are essential for smart home functionalities, including indoor localization and privacy protection. Yet, complex multipath channels in indoor settings often hinder precise localization. To overcome this, we introduce an Artificial Intelligence (AI) technique that amalgamates channel state information from proximate trajectory points, thus elevating the accuracy of line of sight (LoS) angle of arrival (AoA) estimation. Our methodology initiates with an AI-based anomaly detection system to eliminate questionable measurements. Thereafter, our AI-optimized LoS-AoA network proficiently identifies the primary LoS path from the several multipaths detected by the multipath estimation process and autonomously fine-tunes the LoS-AoA estimation. Using simulations in an indoor office environment with Wireless Insite, our results reveal that our approach considerably improves LoS-AoA estimations, even under challenging indoor scenarios. Notably, our technique enhanced AP positioning accuracy in 68% of instances, reducing a 2-meter error to 0.6 meters, and in 95% of instances, cutting down a 10-meter error to 2 meters when measured against top benchmarks.

关键词： Location awareness Meters Wireless communication Accuracy Estimation Smart homes Trajectory

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Industrial Semantic communications for Tool Wear Monitoring in Industrial IoT Networks

Industrial Semantic Communications for Tool Wear Monitoring ...

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IEEE International Conference on communications in China Workshops (ICCC)

作者： Mingqiang Zhang Yajuan Yang Baokun Song Zexin Chen Xiaocong Ma Dongyang Li Na Li Feng Cao Yanping Zhang Haixia Zhang School of Cyber Science and Engineering Qufu Normal University Qufu China College of Oceanography and Space Informatics China University of Petroleum (East China) Huangdao China School of Intelligent Manufacturing and Control Engineering Qilu Institute of Technology Jinan China School of Computer and Information Engineering Qilu Institute of Technology Jinan China School of Control Science and Engineering Shandong University Jinan China Shandong Key Laboratory of Intelligent Communication and Sensing-Computing Integration Shandong University Jinan China

ISBN: (数字)9798350377675

ISBN: (纸本)9798350377682

In this paper, we propose an Industrial Semantic communications (ISC) framework to ensure efficient and in-telligent communication in Industrial Internet-of-Things (IIoT) networks, and further apply the proposed framework to the task of tool wear monitoring. A semantic-aware tool wear monitoring network (TWM-Net) is designed to accurately identify the idling state from tool wear data, thus assisting the semantic data transmission process of the ISC framework. Then, a demo software system is implemented to verify the delay performance of the proposed ISC framework. Experimental results demonstrated that the proposed ISC framework can facilitate the semantic information exchange between edge industrial system and cloud platform together with the deep compressed sensing method, and significantly reduce the amount of data transmissions in IIoT networks. The source code and dataset is available through https://***/pnixsoft/TWM-Net.

关键词： Vibrations Source coding Software systems Multitasking Delays Data communication Monitoring Information exchange Industrial Internet of Things Testing

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