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

作者： Liang, Shan Zhang, Shuang Chen, Shudong Liu, Zhaohe Jilin University College of Electronic Science and Engineering Changchun130012 China Science and Technology on Near-Surface Detection Laboratory Wuxi214035 China

ISBN: (纸本)9781728119076

It is a key problem to locate a buried target in UXO detection. The inversion algorithm based on the principle of least squares requires a large number of forward calculations to estimate the position of a target. The method of auxiliary sources (MAS) which can directly locate a UXO-like target is presented here without forward calculation. With a brief description of single dipole model for a UXO-like target, the basis of target location with magnetic field and scalar magnetic potential is deduced theoretically. Auxiliary sources made of elementary magnetic dipoles on a plane are applied to estimate the equivalent scalar magnetic potential from the measured magnetic field. Firstly, the moment of elementary magnetic dipoles is estimated by matching the measured magnetic field with the auxiliary sources modeled field. Then, the equivalent scalar magnetic potential is calculated with these elementary magnetic dipoles without a priori knowledge of the target's location. Finally, the position is calculated directly with the measured magnetic field and the equivalent scalar magnetic potential. The responses of four UXOs excited by a z-component square transmitting coil are recorded by a 9×9 3-component receiving coil array. With the auxiliary sources on a plane under the measurement grid, the equivalent scalar magnetic potential is calculated precisely. Experimental results show that the measured magnetic field matches well with the auxiliary sources modeled field, and the estimated positions of all targets are highly consistent with the measured ones. The horizontal error is within 2 cm, and the depth error is within 6 cm. © 2019 IEEE.

关键词： Magnetic fields

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Observation of e+e-→■-+c.c.

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Chinese Physics C 2023年第4期 22-31页

作者：麦迪娜 M.N.Achasov P.Adlarson M.Albrecht R.Aliberti A.Amoroso 安美儒安琪白旭红白羽 O.Bakina R.Baldini Ferroli I.Balossino 班勇 V.Batozskaya D.Becker K.Begzsuren N.Berger M.Bertani D.Bettoni F.Bianchi J.Bloms A.Bortone I.Boyko R.A.Briere A.Brueggemann 蔡浩蔡啸 A.Calcaterra 曹国富曹宁 S.A.Cetin 常劲帆常万玲 G.Chelkov 陈琛陈超陈刚陈和生陈玛丽陈申见陈少敏 T.Chen 陈旭荣 X.T.Chen 陈元柏陈卓俊成伟帅初晓 G.Cibinetto F.Cossio 崔佳佳代洪亮代建平 A.Dbeyssi R.E.de Boer D.Dedovich 邓子艳 A.Denig I.Denysenko M.Destefanis F.De Mori 丁勇董静董燎原董明义董翔杜书先 P.Egorov 范玉兰方建房双世方文兴方易 R.Farinelli L.Fava F.Feldbauer G.Felici 封常青冯俊华 K Fischer M.Fritsch C.Fritzsch 傅成栋高涵高原宁高扬 S.Garbolino I.Garzia 葛潘婷葛振武耿聪 E.M.Gersabeck A Gilman K.Goetzen 龚丽龚文煊 W.Gradl M.Greco 谷立民顾旻皓顾运厅关春懿郭爱强郭立波郭如盼郭玉萍 A.Guskov 韩婷婷韩文颖郝喜庆 F.A.Harris 何凯凯何康林 F.H.Heinsius C.H.Heinz 衡月昆 C.Herold M.Himmelreich 侯国一侯颖锐侯治龙胡海明 J.F.Hu 胡涛胡誉黄光顺黄凯旋黄麟钦黄麟钦黄性涛黄燕萍黄震 T.Hussain N Hüsken W.Imoehl M.Irshad J.Jackson S.Jaeger S.Janchiv 纪全姬清平季晓斌季筱璐吉钰瑶贾泽坤姜侯兵姜赛赛江晓山 Y.Jiang 焦健斌焦铮金山金毅荆茂强 T.Johansson N.Kalantar-Nayestanaki 康晓珅 R.Kappert 柯百谦 I.K.Keshk A.Khoukaz P.Kiese R.Kiuchi R.Kliemt L.Koch O.B.Kolcu B.Kopf M.Kuemmel M.Kuessner A.Kupsc W.Kühn J.J.Lane J.S.Lange P.Larin A.Lavania L.Lavezzi 雷祚弘 H.Leithoff M.Lellmann T.Lenz 李翠李聪李春花李澄李德民李飞李刚李慧李贺李海波李惠静 H.N.Li J.Q.Li 李静舒李井文李科 L.J.Li 李龙科李蕾李明浩李培荣李素娴栗帅迎李腾李卫东李卫国李旭红李晓玲李晓宇梁昊梁浩梁浩梁勇飞梁羽铁廖广睿廖龙洲 J.Libby A.Limphirat 林创新林德旭 T.Lin 刘北江刘春秀 D.Liu 刘福虎刘芳刘峰 G.M.Liu H.Liu 刘宏邦刘怀民刘欢欢刘汇慧刘建北刘佳俊刘晶译刘凯刘魁勇刘珂刘亮刘露刘美宏刘佩莲刘倩刘树彬刘桐刘维克刘卫民刘翔刘英刘玉斌刘振安刘智青娄辛丑卢飞翔吕海江吕军光陆小玲卢宇卢云鹏 Z.H.Lu 罗成林罗民兴罗涛罗小兰吕晓睿吕翌丰马凤才马海龙马连良马明明马秋梅马润秋马瑞廷马骁妍马尧 F.E.Maas M.Maggiora S.Maldaner S.Malde Q.A.Malik A.Mangoni 冒亚军毛泽普 S.Marcello 孟召霞 J.G.Messchendorp G.Mezzadri H.Miao 闵天觉 R.E.Mitchell 莫晓虎 N.Yu.Muchnoi Y.Nefedov F.Nerling I.B.Nikolaev 宁哲 S.Nisar 牛艳 S.L.Olsen 欧阳群 S.Pacetti 潘祥潘越 A.Pathak M.Pelizaeus 彭海平 K.Peters 平加伦平荣刚 S.Plura S.Pogodin V.Prasad 齐法制齐航漆红荣祁鸣齐天钰钱森钱文斌钱圳乔从丰秦佳佳秦丽清覃潇平秦小帅秦中华邱进发屈三强 K.H.Rashid C.F.Redmer 任旷洁 A.Rivetti V.Rodin M.Rolo 荣刚 Ch.Rosn Institute of High Energy Physics G.I. Budker Institute of Nuclear Physics SB RAS(BINP) Novosibirsk State University Uppsala University Bochum Ruhr-University Johannes Gutenberg University of Mainz University of Turin INFN Liaoning Normal University State Key Laboratory of Particle Detection and Electronics University of Science and Technology of China University of Jinan Southeast University Joint Institute for Nuclear Research INFN Laboratori Nazionali di Frascati INFN Sezione di Ferrara Peking University State Key Laboratory of Nuclear Physics and Technology Peking University National Centre for Nuclear Research Institute of Physics and Technology University of Muenster Carnegie Mellon University Wuhan University University of Chinese Academy of Sciences Istinye University Moscow Institute of Physics and Technology Nankai University Soochow University Nanjing University Tsinghua University Institute of Modern Physics Hunan University School of Physics and Electronics Hunan University Shandong University Yunnan University Helmholtz Institute Mainz Liaoning University Zhengzhou University University of Eastern Piedmont Sun Yat-Sen University University of Oxford University of Ferrara University of Manchester GSI Helmholtzcentre for Heavy Ion Research GmbH Guangxi University Nanjing Normal University Shandong Normal University Fudan University Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) and Institute of Modern Physics Fudan University Henan Normal University University of Hawaii Suranaree University of Technology Goethe University Frankfurt South China Normal University Guangdong Provincial Key Laboratory of Nuclear Science Institute of Quantum Matter South China Normal University University of South China University of the Punjab Indiana University Huangshan College University of Groningen Justus-Liebig-Universitaet Giessen Ⅱ. Physikalisches Institut Indian Institute of Technology Madras Qufu Normal University Shanxi Normal University Beijing Institute of Petrochemical Technology Lanzhou Univ

Using data taken at 29 center-of-mass energies between 4.16 and 4.70 GeV with the BESⅢ detector at the Beijing Electron Positron Collider corresponding to a total integrated luminosity of approximately 18.8 fb-1, the process e+e-→■+ c.c. is observed for the first time with a statistical significance of 11.5σ. The average Born cross sections in the energy ranges of（4.160, 4.380） GeV,（4.400, 4.600） GeV and（4.610, 4.700） GeV are measured to be（21.5±5.7±1.2） fb,（46.3±10.6±2.5） fb and （59.0±9.4±3.2） fb, respectively, where the first uncertainties are statistical and the second are systematic. The line shapes of the ■ and ppπ-invariant mass spectra are consistent with phase space distributions, indicating that no hexaquark or di-baryon state is observed.

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Bucking coil used in unexploded ordnance detection with transient electromagnetic system 4

Bucking coil used in unexploded ordnance detection with tran...

引用

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

作者： Jiang, Hejun Luan, Xinqun Hao, Jun Zhang, Shuang Chen, Shudong Science and Technology on Near-Surface Detection Laboratory Wuxi214035 China Jilin University College of Electronic Science and Engineering Changchun130012 China

ISBN: (纸本)9781728119076

Off-time response is usually measured by transient electromagnetic (TEM) system to detect subsurface targets. Compared with off-time response, on-time response of TEM system is more sensitive to high-conductivity targets, such as UXOs. However, it is difficult to obtain on-time response directly due to the strong primary field response. The key problem for on-time measurement is to eliminate the primary field response. Bucking coil is adopted here to compensation the primary field of transmitter coil at receiving coil for on-time response measuring. Firstly, the structure of the sensor with transmitting coil, bucking coil, and receiving coil is presented. Then, the primary field of transmitting coil and bucking coil at the position of receiving coil is calculated theoretically. With the side length of transmitting coil, bucking coil and the receiving coil fixed, the number of turns for transmitting coil and bucking coil are optimized for the best compensation. Calculated results show that the best compensation effect can reach 0.53%. Finally, the sensor with a transmitting coil (constructed with a side length and number of turns of 96 cm and 30, respectively), a bucking coil (constructed with a side length and number of turns of 26 cm and 8, respectively), and a receiving coil (constructed with a side length of 6 cm) was built. Measured results show that the primary field response after compensation is no more than 1% of the original response, and the maximum amplitude is only 0.4V. The on-time response of targets can be accurately recorded. © 2019 IEEE.

关键词： Transient analysis

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detection of UXO-like Targets with Portable Transient Electromagnetic System 4

Detection of UXO-like Targets with Portable Transient Electr...

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

作者： Zhu, Jun Zhang, Haiyang Xu, Yuelin Qiu, Yu Zhang, Shuang Chen, Shudong Science and Technology on Near-Surface Detection Laboratory Wuxi214035 China Jilin University College of Electronic Science and Engineering Changchun130012 China

ISBN: (纸本)9781728119076

With the advantages of strong anti-interference ability and high spatial resolution, electromagnetic induction (EMI) has proven to be successful in unexploded ordnance (UXO detection. Portable transient electromagnetic system can work in a variety of complex conditions where the large and heavy vehicular systems cannot be readily used. The detection of UXO-like targets with portable transient electromagnetic (TEM) system is discussed detailed in this paper. Firstly, with description of the single dipole model for UXO response approximation, the location and characteristic response extraction for UXO-like targets is talked with the DE algorithm. Then, the improved sensor of the portable TEM system with a single-layered transmitting coil and five 3-component receiving coils is introduced. The transmitting coil is constructed with a diameter, number of turns, and transmitting current of 0.5 m, 30, and 5 A, respectively. The receiving coil is constructed with a length, number of turns, and resonant frequency of 6 cm, 600, and 180 kHz, respectively. Finally, 12 UXOs and 6 harmless targets buried in the area of 10 m × 6 m at different depths in different orientations have been detected with the improved portable TEM system. Target location and characteristic response have been estimated by DE algorithm with the measured response. The experimental results show that the high-quality data provided by the improved portable TEM system combined with the DE algorithm based on the dipole model can locate and characterize the separated targets accurately. Most of the position errors are within 10cm in x position and 5cm in depths for separated buried targets. For the multiple-targets buried together, the system can still locate and characterize the targets even if the response of two targets overlaps. © 2019 IEEE.

关键词： Electromagnetic induction

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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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Dilution of precision for time difference of arrival with station deployment

arXiv

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arXiv 2021年

作者： Zhang, Fengyun Li, Hao Ding, Yulong Yang, Shuang-Hua Yang, Li Department of Computer Science and Engineering Southern University of Science and Technology Guangdong Shenzhen China Science and Technology on Near-surface Detection Laboratory Jiangsu Wuxi China Academy for Advanced Interdisciplinary Studies Southern University of Science and Technology Guangdong Shenzhen China Department of Mathematics Southern University of Science and Technology Guangdong Shenzhen China Army Engineering University of Pla Jiangsu Nanjing China

A study is conducted with the aim to reveal the relationship between the performance of moving object tracking algorithms and tracking anchor (station) deployment. The dilution of precision (DoP) for the time difference of arrival (TDoA) technique with respect to anchor deployment is studied. Linear and non-linear estimators are used for TDoA algorithms. The research findings for the linear estimator indicate that the DoP attains a lower value when other anchors are scattered around a central anchor;for the non-linear estimator, the DoP is optimal when the anchors are scattered around the target tag. Experiments on both algorithms are conducted that target location precision related to anchor deployment in practical situations for tracking moving objects integrated with a Kalman filter in an ultra-wideband (UWB)-based real-time localization system. The work provides a guideline for deploying anchors in UWB-based tracking systems. Copyright © 2021, The Authors. All rights reserved.

关键词： Time difference of arrival

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Tuning the size of photo-deposited metal nanoparticles: Via manipulating surface defect structures of TiO₂ nanocrystals

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Chemical Communications 2020年第13期56卷 1964-1967页

作者： Zhou, Xian Qian, Kun Zhang, Yunshang Li, Dan Wei, Zeyue Wang, Huijuan Ye, Run Liu, Jiandang Ye, Bangjiao Huang, Weixin Hefei National Laboratory for Physical Sciences at the Microscale Key Laboratory of Surface and Interface Chemistry Energy Catalysis of Anhui Higher Education Institutes CAS Key Laboratory of Materials for Energy Conversion Department of Chemical Physics University of Science and Technology of China Jinzhai Road 96 Hefei 230026 China Engineering and Materials Science Experiment Center University of Science and Technology of China Jinzhai Road 96 Hefei 230026 China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of China Jinzhai Road 96 Hefei 230026 China

Here we report a new method for controlling photo-deposited metal nanoparticle size by manipulating surface defect structures of TiO2 nanocrystals. Our results demonstrate that the isolated oxygen vacancy could serve ...

Here we report a new method for controlling photo-deposited metal nanoparticle size by manipulating surface defect structures of TiO₂ nanocrystals. Our results demonstrate that the isolated oxygen vacancy could serve as an electron trapper while the oxygen vacancy cluster could act as an electron-hole recombination site in the photo-deposition process. © 2020 The Royal Society of Chemistry.

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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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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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BAANet: Learning Bi-directional adaptive attention gates for multispectral pedestrian detection

arXiv

引用

arXiv 2021年

作者： Yang, Xiaoxiao Qian, Yeqiang Zhu, Huijie Wang, Chunxiang Yang, Ming Department of Automation Shanghai Jiao Tong University Shanghai200240 China The Key Laboratory of System Control and Information Processing Ministry of Education of China Shanghai200240 China University of Michigan-Shanghai Jiao Tong University Joint Institute Shanghai Jiao Tong University Shanghai200240 China Science and Technology on Near-Surface Detection Laboratory Wuxi214035 China

Thermal infrared (TIR) image has proven effectiveness in providing temperature cues to the RGB features for multispectral pedestrian detection. Most existing methods directly inject the TIR modality into the RGB-based framework or simply ensemble the results of two modalities. This, however, could lead to inferior detection performance, as the RGB and TIR features generally have modality-specific noise, which might worsen the features along with the propagation of the network. Therefore, this work proposes an effective and efficient cross-modality fusion module called Bi-directional Adaptive Attention Gate (BAA-Gate). Based on the attention mechanism, the BAA-Gate is devised to distill the informative features and recalibrate the representations asymptotically. Concretely, a bi-direction multi-stage fusion strategy is adopted to progressively optimize features of two modalities and retain their specificity during the propagation. Moreover, an adaptive interaction of BAA-Gate is introduced by the illumination-based weighting strategy to adaptively adjust the recalibrating and aggregating strength in the BAA-Gate and enhance the robustness towards illumination changes. Considerable experiments on the challenging KAIST dataset demonstrate the superior performance of our method with satisfactory speed. Copyright © 2021, The Authors. All rights reserved.

关键词： Feature extraction

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