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2024 OES China Ocean Acoustics, COA 2024

作者： Yan, Zhenyu Zhou, Tian Liu, Weilu Du, Weidong Harbin Engineering University National Key Laboratory of Underwater Acoustic Technology Harbin150001 China Ministry of Industry and Information Technology Harbin Engineering University Key Laboratory of Marine Information Acquisition and Security Harbin150001 China College of Underwater Acoustic Engineering Harbin Engineering University Harbin150001 China

ISBN: (纸本)9798350340297

Cloth simulation filtering (CSF) is an automatic filtering algorithm used for airborne light detection and ranging (LiDAR) point clouds, with few parameters and high accuracy, and it is suitable for various landscapes. However, owing to the differences between the acoustic bathymetric and optical ranging principles, CSF may require more artificial intervention to handle multi-beam bathymetric point clouds, and the anomalies generated by the seafloor secondary echo result in diminishing the filtering accuracy of CSF. This paper presents an improved CSF based on maximum likelihood estimation (MLE), called MLE-CSF, which weakens the impact of negative anomalies on the filtering effect by determining the estimated bathymetric point for each cloth particle. In this method, a linear observation model of estimated bathymetry for cloth particles was established, and then the MLE was used to calculate the estimated bathymetric values of each particle in the vertical direction. Next, the CSF was carried out, and the simulated bathymetric value of each particle was obtained when the simulation terminated. Finally, the multi-beam bathymetric point cloud was divided as the off-seafloor or seafloor point set by comparing the simulated bathymetric value with the estimated one. To evaluate the filtering performance, the MLE-CSF was applied to the bathymetric data collected around the Chi Island in Qingdao, China. The filtering result reveals that the MLE-CSF outperforms CSF, which decreases the total error from 2.58 % to 1.92 % and increases Cohen's kappa coefficient from 77.42 % to 82.26 % in the research area. The MLE-CSF is more suitable and stable for multi-beam bathymetric data than the morphology-based filter. © 2024 IEEE.

关键词： Bathymetry

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Multipassive Sensor Multitarget Efficient Trajectory-Measurement Association Algorithm Based on the Submodular Optimization Theory

Multipassive Sensor Multitarget Efficient Trajectory-Measure...

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2024 OES China Ocean Acoustics, COA 2024

作者： Lyu, Ying Qi, Bin Liang, Guolong Harbin Engineering University National Key Laboratory of Underwater Acoustic Technology Harbin150001 China Harbin Engineering University Key Laboratory of Marine Information Acquisition and Security Ministry of Industry and Information Technology Harbin150001 China College of Underwater Acoustic Engineering Harbin Engineering University Harbin150001 China

ISBN: (纸本)9798350340297

data association is critical for resolving multisensor and multitarget tracking challenge. As the number of sensors and targets grows, the complexity of linking measurements to specific targets also grows. The question of efficiently associating ideal measurements for each target, particularly in multipassive sensor systems, remains unresolved. Inspired by least squares estimation, a cost function is determined that considers angle deviation and distance cost, the original objective function, and a set of constraints. The original objective function is then changed into a submodular function with the property of diminishing marginal benefits after an analysis of the problem's practical importance. Finally, based on the submodular optimization theory, an effective multisensor trajectory-measurement association algorithm is proposed. The simulation results show that using the proposed algorithm, each target only needs to be associated with a small number of high-accuracy measurement azimuths to achieve tracking performance comparable with the previous algorithm. © 2024 IEEE.

关键词： Cost functions

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A Secure Multiparty Computation Round Optimization Scheme Based on Standard Assumption 15

A Secure Multiparty Computation Round Optimization Scheme Ba...

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2022 IEEE Congress on Cybermatics: 15th IEEE International Conferences on Internet of Things, iThings 2022, 18th IEEE International Conferences on Green Computing and Communications, GreenCom 2022, 2022 IEEE International Conference on Cyber, Physical and Social Computing, CPSCom 2022 and 8th IEEE International Conference on Smart data, Smartdata 2022

作者： Luo, Yun Chen, Yuling Li, Tao Wang, Yilei Guizhou University State Key Laboratory of Public Big Data College of Computer Science and Technology Guiyang China Guilin University of Electronic Technology Guangxi Key Laboratory of Cryptography and Information Security Guilin China Weifang University of Science and Technology Blockchain Laboratory of Agricultural Vegetables WeiFang China Qufu Normal University School of Computer Science Rizhao China

ISBN: (数字)9781665454179

ISBN: (纸本)9781665454179

Many distributed interaction scenarios exist in big data networks, which require joint computation in different environments. In the traditional secure multiparty computation(SMPC), there exist constant rounds or even more rounds of interaction, which greatly increases the communication overhead. In this paper, we address the problem of optimizing the complexity of rounds by constructing a secure computation protocol that achieves semi-honest static security based on a polynomial puzzle assumption. The multiparty interactive computation is performed using multilinear maps operation, and the obtained results are transmitted over the broadcast channel. The security analysis shows that the protocol achieves static security. © 2022 IEEE.

关键词： Complex networks

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Experimental Comparison of Graph Edit Distance Computation Methods

Experimental Comparison of Graph Edit Distance Computation M...

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International Conference on Mobile data Management

作者： Gaoming Zhang Sen Lin Xianmin Wang Teng Huang Xuan Hu Lingyun Zou Institute of Artificial Intelligence and Blockchain Guangzhou University Information Security Research Center CEPREI Laboratory Key Laboratory of Ministry of Industry and Information Technology CSSC Systems Engineering Research Institute

Graph edit distance (GED) is a fundamental graph similarity metric. GED computation is NP-hard [10], and exact GED computation is only feasible for small graphs. Therefore, many methods of approximate GED computation have been proposed in the literature. In this paper, we select the five representative GED approximation methods and compare their performance on two real-world datasets. We observe that non-heuristic algorithms such as LSa [1] are fast and accurate in computing true GED for small graphs, and heuristic algorithms such as GENN [4] are very effective in computing the estimated path cost. This effort helps us pinpoint suitable algorithms for different applications.

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Collision Classification MAC Protocol for Underwater Acoustic Communication Networks Using Directional Antennas

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China Communications 2022年第5期19卷 241-252页

作者： Jianmin Yang Gang Qiao Qing Hu Lingji Xu Peng Xiao Jiarong Zhang School of Ocean Engineering and Technology Sun Yat-sen UniversityGuangzhou 518000China Acoustic Science and Technology Laboratory Harbin Engineer UniversityHarbin 150001China Key Laboratory of Marine Information Acquisition and Security Harbin Engineering UniversityMinistry of Industry and Information TechnologyHarbin 150001China College of Underwater Acoustic Engineering Harbin Engineering UniversityHarbin 150001China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519000China Systems Engineering Research Institute Beijing 100094China

Traditional underwater acoustic communication networks(UACNs)generally use omnidirectional transmission technology that causes a large number of data-packet collisions,thus resulting in low network throughput and high end-to-end *** with omnidirectional transmission technology,directional technology only sends and receives data packets in a specified *** can significantly reduce the probability of collisions and improve network ***,it also causes a deafness problem,which occurs when the sending node sends a data packet to the receiving node but the receiving node is unable to reply to the sender,because its antenna beam is *** resolve this issue,this study proposes a collision classification media access control(CC-MAC)protocol for *** this protocol,the underwater acoustic channel is divided into two subchannels,and the nodes transmit corresponding data types on *** sending node can estimate the current status of the receiving node(i.e.,no collision,normal collision,deafness)according to the type of the data packet received and the sub-channel it arrived on,and it can choose correct options to improve network ***,we verify the performance of CC-MAC via simulations,showing that the protocol achieved higher network throughput and lower end-toend delays.

关键词： collision classification directional antennas dual channel media access control(MAC) underwater acoustic communication networks(UACNs)

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data Confirmation Scheme based on Auditable CP-ABE 15

Data Confirmation Scheme based on Auditable CP-ABE

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作者： Zhang, Lingyun Chen, Yuling Qian, Xiaobin Guizhou University State Key Laboratory of Public Big Data College of Computer Science and Technology Guiyang China Guilin University of Electronic Technology Guangxi Key Laboratory of Cryptography and Information Security Guilin China Weifang University of Science and Technology Blockchain Laboratory of Agricultural Vegetables Shandong WeiFang China Guizhou CoVision Science & Technology Co. Ltd Guiyang China

ISBN: (数字)9781665454179

ISBN: (纸本)9781665454179

Ensuring data rights, openness and transaction flow is important in today's digital economy. Few scholars have studied in the area of data confirmation, it is only with the development of blockchain that it has started to be taken seriously. However, blockchain has open and transparent natures, so there exists a certain probability of exposing the privacy of data owners. Therefore, in this paper we propose a new measure of data confirmation based on Ciphertext-Policy Attribute-Base Encryption(CP-ABE). The information with unique identification of the data owner is embedded in the ciphertext of CP-ABE by paillier homomorphic encryption, and the data can have multiple sharers. No one has access to the plaintext during the whole confirmation process, which reduces the risk of source data leakage. © 2022 IEEE.

关键词： Cryptography

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Multiple RTS and data Receptions in a Loop-Based Underwater Propagation Delay Aware MAC Protocol

Multiple RTS and DATA Receptions in a Loop-Based Underwater ...

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2021 OES China Ocean Acoustics, COA 2021

作者： Iqbal, Basit Liu, Songzuo Ullah Khan, Imran Acoustic Science and Technology Laboratory Harbin Engineering University Harbin150001 China Key Laboratory of Marine Information Acquisition and Security Harbin Engineering University Ministry of Industry and Information Technology Harbin150001 China College of Underwater Acoustic Engineering Harbin Engineering University Harbin150001 China

ISBN: (纸本)9781728181905

Due to the long underwater propagation delays, the underwater sink node may not receive all of the requests to send RTS and data frames from the various underwater sensor nodes, resulting in massive collisions. We proposed an underwater Medium Access Control (MAC) protocol that takes into account the long propagation delay to evaluate the performance of the carrier sense multiple access collision avoidance (CSMA/CA) protocol utilizing a loop-based single hope underwater sensor network. The proposed protocol is designed to restore multiple RTS control packets from n underwater sensor nodes to the underwater sink node in a single slot time. The sink node received multiple RTS frames without overlapping because the n underwater sensor nodes transmitted the RTS frames at the same time, but they were received at different times at the receiver end due to differences in propagation delays that depend on the distances between the n sensor nodes and the sink node. In this paper, by altering the number of underwater sensor nodes and the size of the contention window, the proposed MAC protocol throughput is evaluated by using the underwater propagation delay. © 2021 IEEE.

关键词： Medium access control

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An Advanced Quantum-Resistant Signature Scheme for Cloud Based on Eisenstein Ring

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Computers, Materials & Continua 2018年第7期56卷 19-34页

作者： Faguo Wu Xiao Zhang Wang Yao Zhiming Zheng Lipeng Xiang Wanpeng Li Key Laboratory of Mathematics Informatics and Behavioral SemanticsMinistry of EducationSchool of Mathematics and Systems ScienceBeihang UniversityBeijing100191China Beijing Advanced Innovation Center for Big Data and Brain Computing Beihang UniversityBeijing100191China The Fifth Electronics Research Institute of Ministry of Industry and Information Technology Guangzhou510610China Department of Electrical and Electronic Engineering City University of LondonUK

Signature,widely used in cloud environment,describes the work as readily identifying its *** existing signature schemes in the literature mostly rely on the Hardness assumption which can be easily solved by quantum *** this paper,we proposed an advanced quantum-resistant signature scheme for Cloud based on Eisenstein Ring(ETRUS)which ensures our signature scheme proceed in a lattice with higher *** proved that ETRUS highly improve the performance of traditional lattice signature ***,the Norm of polynomials decreases significantly in ETRUS which can effectively reduce the amount of polynomials convolution ***,storage complexity of ETRUS is smaller than classical ***,according to all convolution of ETRUS enjoy lower degree polynomials,our scheme appropriately accelerate 56.37%speed without reducing its security level.

关键词： Signature quantum-resistant Eisenstein Ring ETRUS

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Efficient Adaptive Beamforming of Underwater Acoustic Target under Impulsive Noise 5

Efficient Adaptive Beamforming of Underwater Acoustic Target...

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5th IEEE International Conference on Electronic information and Communication technology, ICEICT 2022

作者： Dai, Zehua Guo, Longxiang Acoustic Science and Technology Laboratory Harbin Engineering University Harbin150001 China Harbin Engineering University Key Laboratory of Marine Information Acquisition and Security Ministry of Industry and Information Technology Harbin150001 China College of Underwater Acoustic Engineering Harbin Engineering University Harbin150001 China

ISBN: (数字)9781665472111

ISBN: (纸本)9781665472111

Underwater target detection is seriously affected by underwater impulse noise. In general, it is considered that the environmental noise follows Gaussian distribution. However, the underwater marine environmental noise data show that there is large impulse noise in underwater random noise, such as ice fracture in polar underwater environment and underwater impulse noise caused by iceberg collision and extrusion. At present, most beamforming methods are optimal in Gaussian environment noise, and their performance is greatly reduced in impulse noise environment. When the actual noise is impulse noise, the performance of conventional beamformer in impulse noise environment will be greatly reduced. To solve these problems, an adaptive beamforming method based on Andrew's sine estimator is proposed in this paper. The Andrew's sine function is a robust estimator, which has been used in outlier handling and robust statistics. However, such superior estimator does not receive attention in the field of adaptive beamforming. In this paper, a new variable parameter Andrew's sine estimator has been designed to improve performance. Simulation experiments demonstrate that the proposed adaptive beamforming method still has good beamforming performance in impulse noise environment. And the proposed method has been compared with the traditional beamforming algorithms to verify its performance. © 2022 IEEE.

关键词： Impulse noise

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Design of Multi-Channel Signal Acquisition and Transmission Unit Based on Multi-core DSP

Design of Multi-Channel Signal Acquisition and Transmission ...

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2021 OES China Ocean Acoustics, COA 2021

作者： Liu, Xin Wang, Jinyang Acoustic Science and Technology Laboratory Harbin Engineering University Harbin150001 China Key Laboratory of Marine Information Acquisition and Security Harbin Engineering University Ministry of Industry and Information Technology Harbin150001 China College of Underwater Acoustic Engineering Harbin Engineering University Harbin150001 China

ISBN: (纸本)9781728181905

Based on the increasing requirements for the number of hydrophone channels, sampling rate and real-time data processing in underwater acoustic signal processing, a multi-channel signal acquisition platform is designed and implemented in this paper. As an important part of the underwater positioning and navigation system, the multi-channel signal acquisition platform is responsible for implementing the control of the entire system. The platform aims to realize the collection and transmission of high-speed real-time multi-channel hydrophone signals and various external serial port signals. According to the system design requirements, this paper selects the quad-core DSP TMS320C6674 and Cyclone IV GX series FPGA as the core processing device of the platform, can realize the real-time sampling of 32-channel 200kHz sampling rate and the reception of 4 channels of serial information. It uses PCIE and Gigabit Ethernet interfaces as data transmission interfaces, and the system has a high transmission rate. After the system joint tuning, the correctness of the design of each module was tested, and the transmission rate and packet loss rate of the system were tested through a long-term copy machine to prove that the system can work stably for a long time and meet the system design expectations. © 2021 IEEE.

关键词： Field programmable gate arrays (FPGA)

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