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RDSM: Underwater multi-AUV relay deployment and selection mechanism in 3D space

Cognitive Robotics 2024年第1期4卷 204-216页

作者： Liu, Yafei Liu, Na Li, Hao Jiang, Yi zhu, Junwu CSSC Ocean Exploration Technology Institute Co. Ltd Jiangsu 214153 China College of Information Engineering Yangzhou University Jiangsu 225000 China Science and Technology on Near-Surface Detection Laboratory Jiangsu 214000 China

Underwater Wireless Sensor Networks (UWSNs) are widely used in naval military field and marine resource exploration. However, challenges such as resource inefficiency and unbalanced energy consumption severely hinder their practical applications. In this paper, we establish a model of underwater multi-hop wireless sensor network with multiple AUVs as relay nodes, which describes the data transmission process within the network. Based on this, an underwater multi-AUV Relay Deployment and Selection Mechanism in 3D space (RDSM) is proposed to achieve efficient underwater networking. Specifically, the RDSM includes the following key components. Firstly, an optimized relay node deployment strategy (RNDS) is used to deploy AUV nodes to effectively ensure network connectivity. Compared with traditional methods, this strategy has unique advantages in considering underwater space characteristics and can better adapt to the complex underwater environment. Secondly, a new utility function is constructed by integrating factors such as throughput, energy consumption, and load. The relay selection strategy based on utility maximization (RSS-UM) is used to select the next-hop relay node. This strategy is innovative in improving relay selection efficiency and optimizing network performance. Finally, in response to the problem of rapid energy consumption of relay nodes close to the base station, a power adjustment scheme is introduced to achieve a balance in node energy consumption, which is of great significance for prolonging network lifetime and improving overall stability. Experimental results show that compared with existing methods, the proposed mechanism achieves high utility and throughput, while maintaining balanced node energy consumption. © 2024

关键词： Sensor nodes

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UXO localization procedures applied to potable TEM sensor 4

UXO localization procedures applied to potable TEM sensor

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4th IEEE Advanced Information technology, Electronic and Automation Control Conference, IAEAC 2019

作者： Qiu, Yu Zhang, Shuang Chen, Shudong Luo, Chaopeng Jilin University College of Electronic Science and Engineering Changchun130012 China Science and Technology on Near-Surface Detection Laboratory Wuxi214035 China

ISBN: (纸本)9781728119076

Localization of unexploded ordnance (UXO) with transient electromagnetic (TEM) system is a principle and necessary problem in detection procedures, especially beset by low data diversity and high positioning uncertainty. In this paper, procedures for targets location are presented in detail with cued data collected by potable TEM sensor JPMD, which is designed to provide diverse time-domain data of high quality with one transmitter coil and five 3-component receiving coils. Based on the single dipole model, the target is located with the data collected at a single spatial point by the differential evolution (DE) optimization algorithm which can be subdivided into three steps. With the structure and parameters of JPMD sensors and data inversion process described briefly, a field test site of 5 m × 5 m measurement grid was conducted to present the specific UXO localization procedures at Jilin University. Results indicate that all the UXO-like targets can be detected distinctly with JPMD. The location of single object can be inversed rapid in tolerable error at one single point. For two objects with overlapping signals as one, the inverted horizontal position is basically in the middle of them and depth is a bit smaller than theory. © 2019 IEEE.

关键词： Electromagnetic induction

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Novel radome design for RF integration 4

Novel radome design for RF integration

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4th International Applied Computational Electromagnetics Society Symposium in China, ACES-China 2021

作者： Ren, Jinjing Zheng, Yezhen Jing, Shenhui Tang, Qi Research Center for Electromagnetic Environmental Effects Southeast University Nanjing China Science and Technology on Near-surface Detection Laboratory Wuxi China

ISBN: (纸本)9781733509619

RF integration is widely needed by modern shipborne radars. A novel dual-band FSS radome with mathrm{S}+mathrm{X} passband is designed and simulated with angular stability. The passband are 1.55~3.4GHz and 9.2~9.7GHz. This radome achieves good performance in the finite large FSS simulation and cylindrical radome simulation. © 2021 Applied Computational Electromagnetics Society (ACES).

关键词： Radomes

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Camouflaged target tracking based on a scale-adaptive correlation filter algorithm

Camouflaged target tracking based on a scale-adaptive correl...

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2021 China Automation Congress, CAC 2021

作者： Liu, Yang Wang, Congqing Zhou, Yongjun College of Automation Engineering Nanjing University of Aeronautics and Astronautics Nanjing China Science and Technology on Near-Surface Detection Laboratory Wuxi China

ISBN: (纸本)9781665426473

Catering the continuous development of intelligent technology and the wide application prospects of unmanned aerial vehicles (UAVs), the target tracking technology will be applied in future combat. In order to deal with the complex battlefield environment and the scale change of the target during tracking, an improved scale-adaptive correlation filter algorithm based on fusion features is proposed to realize the tracking of military personnel. First, the fast histogram of oriented gradient (FHOG) features and the local binary pattern (LBP) features are adaptively weighted and fused to achieve the target location. Then the translation filter of kernelized correlation filters(KCF) and the scale filter of discriminative scale space tracking(DSST) are combined to comprehensively improve the calculation speed and scale adaptation performance of the algorithm and track the target in time. The experimental results prove the robustness and practicability of the proposed method, which can accurately track military targets in real time. © 2021 IEEE

关键词： Local binary pattern

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Cascaded sliding window based real-time 3D region proposal for pedestrian detection

Cascaded sliding window based real-time 3D region proposal f...

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2019 IEEE International Conference on Robotics and Biomimetics, ROBIO 2019

作者： Hu, Jun Wu, Tao Fu, Hao Wang, Zhiyu Ding, Kai National University of Defense Technology College of Intelligence Science and Technology Changsha Hunan Province China Science and Technology on Near-Surface Detection Laboratory Wuxi Jiangsu Province China

ISBN: (纸本)9781728163215

Pedestrian detection is an indispensable technology for designing autonomous driving systems. This paper proposes a cascaded sliding window based real-time approach to generate 3D pedestrian proposals on point clouds only. After rasterizing the raw point cloud, a 3D sliding window is adopted to extract pedestrian candidates. Two features are proposed to improve the proposal performance. One is the central points density feature, which acts as a filter to speed up the process and reduce false alarms. The other is the location feature, including the density distribution and height difference distribution of the point cloud, which describes the profile and location of an object in a sliding window. The scores generated by this feature are then applied to non-maximum suppression (NMS) to remove sub-optimal boxes. Experiments on the KITTI 3D object detection benchmark show that our approach achieves state-of-the-art results among comparable methods, while maintaining the speed and accuracy trade-off. © 2019 IEEE.

关键词： Object detection

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Research on digital instantaneous frequency measurement based on passive positioning system 4

Research on digital instantaneous frequency measurement base...

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4th IEEE International Conference on Computer and Communications, ICCC 2018

作者： Yingjiao, Rong Wenfang, Lu Science and Technology on Near-Surface Detection Laboratory Wuxi China Yangzhou Baojun Subei Electronics Co. Ltd. Yangzhou China

ISBN: (纸本)9781538683392

The passive microwave detection and positioning technology is introduced into the low-altitude area alert and azimuth system for near-earth ground. The technique of single pulse orientation measurement receiver and digital instantaneous frequency measurement are used to locate the pulse description word (PDW) of the enemy target parameters. This paper studies an instantaneous frequency measurement technique using a seven-channel digital delay line frequency discriminating system in the frequency range of 8 to 18 GHz, and monitors and corrects the frequency measurement error caused by temperature in real time. Theoretically, it has a high accuracy of frequency measurement. © 2018 IEEE.

关键词： Broadband Delay line detection High accuracy Instantaneous frequency measurement Passive microwave positioning

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Gaussian Mixtures Match and Fusion Algorithms for Multi-Sensor Multi-Target Tracking 22

Gaussian Mixtures Match and Fusion Algorithms for Multi-Sens...

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22nd International Conference on Information Fusion, FUSION 2019

作者： Shen-Tu, Han Rong, Yingjiao Guo, Yunfei Luo, Ji-An Shi, Yifang Institution of Information and Control Hangzhou Dianzi University Hangzhou310018 China Science and Technology on Near-Surface Detection Laboratory Wuxi214035 China

ISBN: (纸本)9780996452786

The results of single sensor Gaussian Mixture PHD Tracker (GM-PHDT) will deteriorate when tracking targets in dense clutter and low detection rate environments. In this work, we propose three multi-sensor multi-target GM-PHD fusion algorithms. For the proposed algorithms, we obtain the multi-sensor posterior GMs by fusing the matched GMs from multiple sensors. Specifically, the GM matching and fusing methods are proposed to fullfill the applicable GM-PHD algorithms. The simulation results demonstrated the efficiency of the proposed algorithms. © 2019 ISIF-International Society of Information Fusion.

关键词： Target tracking

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A non-contact flexible pyroelectric sensor for wireless physiological monitoring system

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science China(Information sciences) 2022年第2期65卷 162-172页

作者： Jian HE Sen LI Xiaojuan HOU Yongjun ZHOU Hao LI Min CUI Tao GUO Xiangdong WANG Jiliang MU Wenping GENG Xiujian CHOU Science and Technology on Electronic Test and Measurement Laboratory North University of China Science and Technology on Near-Surface Detection Laboratory China Institute of Sport Science

Recently, human physiological information wireless monitoring in real-time is particularly important in health analysis. As a solution, a non-contact wireless physiological monitoring system based on pyroelectric generator(Py G), whose core part consists of a wireless circuit processing module and a polyvinylidene fluoride(PVDF) film, has been successfully designed. Owing to the temperature change under the stimulation of an external heat source, the output voltage of the Py G self-powered flexible sensor increases with the heat source temperature variation in the range of 295–355 K. Furthermore, based on the natural temperature oscillation between the living body and surrounding environment, the sensor can realize human physiological information assessment, for example, temperature monitoring of the palms, fingers, respiratory heat signals from mouth or nose or non-contact spatial heat mapping recognition of finger movement via sensor array. On this basis, a portable wireless monitoring system was designed by integrating the intelligent sensor with a signal conditioning circuit, data conversion storage module, Bluetooth module,and power module. This system can acquire real-time human oral or nasal breathing signals in the personal mobile app to evaluate the physiological state of individuals. Additionally, the wireless monitoring system can be activated within 10 m, demonstrating the application of Py G sensors in remote data transmission.

关键词： non-contact pyroelectric generator human body heat environmental thermal energy wireless monitoring system

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Reconfigurable Multi-band Phase-Switched-Screen based on Artificial Magnetic Conductor surface 13

Reconfigurable Multi-band Phase-Switched-Screen based on Art...

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13th International Conference on Microwave and Millimeter Wave technology, ICMMT 2021

作者： Ling, Guoping Gong, Weijie Chang, Yumei Wang, Lin Science And Technology On Near-Surface Detection Laboratory Wuxi China Nanjing University Of Posts And Telecommunications College Of Electric And Optical Engineering Nanjing China

ISBN: (纸本)9781665434379

In this paper, by employing the PIN diodes to the ultra-thin Artificial Magnetic Conductor (AMC), a new kind of reconfigurable multi-band phase switched screen (PSS) was proposed. By control the switch sequences between "OFF"and "ON"states in different binary switch form (code "0"represents the state of "OFF", and code"1"represents "ON"state) on the PIN diodes in the PSS, the reflection phase from the AMC surface at the resonating frequencies could change between in-phase and out-of-phase alternatively. If the sequences were properly chosen, then the incident electromagnetic would be reflected after digital modulation. And therefore, most of the energy of the reflected wave would move out from the working band of the radar receiver, and only small amount of interference signal fall into the working band, and then lead to radar stealth. Meanwhile, the simulation results verify the feasibility of the proposed design. © 2021 IEEE.

关键词： Frequency modulation

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Passive detection Beamforming Based on Arc Array 3rd

Passive Detection Beamforming Based on Arc Array

引用

3rd International Conference on Advanced Intelligent Technologies, ICAIT 2022

作者： Li, MengLei Xu, YueLin Wang, ShiRui Li, YiQing CSSC Ocean Exploration Technology Institude Co. Ltd Jiangsu Wuxi China Science and Technology On Near-Surface Detection Laboratory Jiangsu Wuxi China

ISBN: (纸本)9789819952021

Linear arrays are widely used in underwater acoustic detection equipment, but they often have the problem of port and starboard ambiguity, and the azimuth resolution will decrease rapidly with the increase of the deviation from the natural pointing angle. In order to solve this problem, the conventional beamforming method is adopted in this paper, and the beamforming performance of non-linear arrays is simulated and studied. The simulation results show that the ring array can have consistent beam response and azimuth resolution in any direction. Further considering that the actual application scenario of the array is the shore, the actual required detection range is from −90° to 90°. In order to avoid the waste of array elements, the beamforming performance of the arc array is studied. The simulation results show that for a semi-circular arc array with a beam radius product of 21π, the azimuth resolution can be maintained between 2° and 4° in the range of −70° to 70°, which is beneficial to the azimuth estimation of small targets and meets the requirements of usage requirements. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Beamforming

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