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Anti-swarm UAV radar system based on detection data fusion

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Journal of Systems Engineering and Electronics 2024年第5期35卷 1167-1176页

作者： WANG Pengfei hu jinfeng hu Wen WANG Weiguang DONG Hao School of Information and Communication Engineering University of Electronic Science and Technology of ChinaChengdu 611731China China Airborne Missile Academy Luoyang 471009China Yangtze Delta Region Institute(Quzhou) University of Electronic Science and Technology of ChinaQuzhou 324003China College of Electronic and Information Engineering Nanjing University of Aeronautics and AstronauticsNanjing 211106China

There is a growing body of research on the swarm unmanned aerial vehicle(UAV)in recent years,which has the characteristics of small,low speed,and low height as radar *** confront the swarm UAV,the design of anti-UAV radar system based on multiple input multiple output(MIMO)is put forward,which can elevate the performance of resolution,angle accuracy,high data rate,and tracking flexibility for swarm UAV *** resolution and detection are the core problem in detecting the swarm *** distinct advantage of MIMO system in angular accuracy measurement is demonstrated by comparing MIMO radar with phased array *** MIMO radar has better performance in resolution,swarm UAV detection still has difficulty in target *** paper proposes a multi-mode data fusion algorithm based on deep neural networks to improve the detection ***,signal processing and data processing based on the detection fusion algorithm above are designed,forming a high resolution detection *** simulations are designed to illustrate the feasibility of the designed system and the proposed algorithm.

关键词： swarm radar high resolution deep neural network fusion algorithm

Parameter estimation of maneuvering targets in OTHR based on sparse time-frequency representation

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Journal of Systems Engineering and Electronics 2016年第3期27卷 574-580页

作者： jinfeng hu Xuan He Wange Li hui Ai huiyong Li Julan Xie School of Electronic Engineering University of Electronic Science and Technology of China

This paper proposes a new method for estimating the parameter of maneuvering targets based on sparse time-frequency transform in over-the-horizon radar（OTHR）. In this method, the sparse time-frequency distribution of the radar echo is obtained by solving a sparse optimization problem based on the short-time Fourier transform. Then Hough transform is employed to estimate the parameter of the targets. The proposed algorithm has the following advantages： Compared with the Wigner-Hough transform method, the computational complexity of the sparse optimization is low due to the application of fast Fourier transform（FFT）. And the computational cost of Hough transform is also greatly reduced because of the sparsity of the time-frequency distribution. Compared with the high order ambiguity function（HAF） method, the proposed method improves in terms of precision and robustness to noise. Simulation results show that compared with the HAF method, the required SNR and relative mean square error are 8 dB lower and 50 dB lower respectively in the proposed method. While processing the field experiment data, the execution time of Hough transform in the proposed method is only 4% of the Wigner-Hough transform method.

关键词： over-the-horizon radar(OTHR) maneuvering tar-get parameter estimation sparse time-frequency transform Hough transform

Weak harmonic signal detection method in chaotic interference based on extended Kalman filter

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Digital Communications and Networks 2019年第1期5卷 51-55页

作者： Chengye Lu Sheng Wu Chunxiao Jiang jinfeng hu Iallchain Co. Ltd. Beijing 100083 China School of Information and Communication Engineering Beijing University of Posts and Telecommunications Beijing 100876 China Tsinghua Space Center Tsinghua University Beijing 100084 China School of Information and Communication Engineering University of Electronic Science and Technology of China Chengdu 611731 China

The traditional methods of weak harmonic signal detection under strong chaotic interference often suffer from high computational complexity and poor performance. In this paper, an Extended Kalman Filter (EKF) based detection method is proposed for the detection of weak harmonic signal. The EKF method avoids matrix inversion by iterating measurement equation and state equation, which simultaneously improves the robustness and reduces the complexity. Compared with the existing detection methods, the proposed method has the following advantages: 1) it has better performance than the neural network method;2) it has similar performance with the optimal filtering method, but with lower computational complexity;3) it is more robust compared with the optimal filtering method.

关键词： Extended Kalman filter Strong chaotic interference Weak harmonic signal

Numerical modeling of global seismic phases and its application in seismic phase identification

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Earthquake Science 2019年第2期32卷 72-79页

作者： Chanjun Jiang Youxue Wang Bin Xiong Qianci Ren jinfeng hu Wenqi Gao Yi Tian Xi Zhuo School of Earth Science Guilin University of TechnologyGuilin541006China Guangxi Key Laboratory of Hidden Metallic Ore Deposits Exploration Guilin541006China

Earthquake data include informative seismic phases that require identification for imaging the Earth's structural *** order to identify the phases,we created a numerical method to calculate the traveltimes and raypaths by a shooting technique based upon the IASP91 Earth model,and it can calculate the traveltimes and raypaths for not only the seismic phases in the traditional traveltime tables such as IASP91,AK135,but also some phases such as pPcP,pPKIKP,and *** is not necessary for this method to mesh the Earth model,and the results from the numerical modeling and its application show that the absolute differences between the calculated and theoretical traveltimes from the ISAP91 tables are less than 0.1 ***,it is simple in manipulation and fast in computation,and can provide a reliable theoretical prediction for the identification of a seismic phase within the acquired earthquake data.

关键词： IASP91 Earth model numerical modeling shooting method,seismic phase prediction

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王履山水画图式研究

南京艺术学院学报（美术与设计） 2023年第1期 1-6,I0002页

作者：胡劲峰安徽工程大学设计学院安徽芜湖241000

王履山水画风深受马远、夏珪影响,但在图式上并未囿于马、夏边角之景,亦未追随明初山水画流行图式,而是就马、夏典型图式进行解构和重组,以拼合、交叠的形式聚集至画面中心,成闭合状,并从中心向边缘渐次虚化,形成独特的“中心聚焦式”... 详细信息

王履山水画风深受马远、夏珪影响,但在图式上并未囿于马、夏边角之景,亦未追随明初山水画流行图式,而是就马、夏典型图式进行解构和重组,以拼合、交叠的形式聚集至画面中心,成闭合状,并从中心向边缘渐次虚化,形成独特的“中心聚焦式”构图。不过,该图式在本质上还属于“写生稿”或创作实验阶段,而非成熟风格的标志。

关键词：王履山水图式 “边角之景”“中心聚焦式”

Simultaneous quantification of ginsenoside Rg1 and its metabolites by HPLC–MS/MS:Rg1 excretion in rat bile, urine and feces

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Acta Pharmaceutica Sinica B 2016年第6期6卷 593-599页

作者： Chiyu He Ru Feng Yupeng Sun Shifeng Chu Ji Chen Chao Ma Jie Fu Zhenxiong Zhao Min huang Jiawen Shou Xiaoyang Li Yuzhu Wang jinfeng hu Yan Wang Juntian Zhang State Key Laboratory of Bioactive Substances and Functions of Natural Medicines Institute of Materia MedicaChinese Academy of Medical Sciences Beijing Analytical Application Center Shimadzu (China) Co. Ltd.

Ginsenoside Rg1(Rg1), the major effective component of ginseng, has been shown to have multiple bioactivities, but low oral bioavailability. The aim of this study was to develop a simple, sensitive and rapid high performance liquid chromatography–tandem mass spectrometry(LC–MS/MS) method, which could be used to validate and quantify the concentrations of Rg1 and its metabolites in Sprague-Dawley rat bile,urine, and feces after oral administration(25 mg/kg). Calibration curves offered satisfactory linearity(r40.995)within the determined ranges. Both intra-day and inter-day variances were less than 15%, and the accuracy was within 80–120%. The excretion recoveries of Rg1, ginsenoside Rh1(Rh1), and protopanaxatriol(Ppt) in bile,urine, and feces combined were all greater than 70%. The fecal excretion recoveries of Rg1, Rh1, and Ppt were40.11%, 22.19%, and 22.88%, respectively, whereas 6.88% of Rg1 and 0.09% of Rh1 were excreted in *** excretion accounted for only 0.04% of Rg1. In conclusion, the observed excretion profiles for Rg1 and its metabolites after oral administration are helpful for understanding the poor oral bioavailability of Rg1 and will aid further investigations of Rg1 as a pharmacologically active component.

关键词： Ginsenoside Rg1 Ginsenoside Rh1 Protopanaxatriol Excretion LC–MS/MS

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浅地层探地雷达目标探测和定位新方法

仪器仪表学报 2006年第4期27卷 371-375页

作者：胡进峰周正欧清华大学电机系电力系统国家重点实验室北京100084 电子科技大学电子工程学院704教研室成都610054

提出基于模板匹配的探地雷达目标自动探测与定位新方法,和图像分割方法相结合以减少模板匹配的计算量。将雷达图像分割成可能存在目标的区域和背景数据区域,对可能存在目标的区域进行模板匹配计算。模板根据待匹配点的深度生成。如果探... 详细信息

提出基于模板匹配的探地雷达目标自动探测与定位新方法,和图像分割方法相结合以减少模板匹配的计算量。将雷达图像分割成可能存在目标的区域和背景数据区域,对可能存在目标的区域进行模板匹配计算。模板根据待匹配点的深度生成。如果探测到金属目标则对模板倒相,实现金属目标的准确定位。所提方法包括图像分割、模板生成、匹配算法、金属目标识别和模板倒相算法。对实测数据处理的结果表明,所提方法探测和定位准确、鲁棒性好。

关键词：探地雷达目标探测图像分割模板匹配

A Velocity Measurement Principle Based on Scaling Parameter Estimation of Chaotic System

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A Velocity Measurement Principle Based on Scaling Parameter ...

电极材料对微生物燃料电池处理老龄垃圾渗滤液性能的影响

2010 3rd International Conference on Computer and Electrical Engineering(ICCEE 2010)

作者： Lidong Liu jinfeng hu Zishu He Chunlin Han Chi Lu School of Electronic Engineering UESTC

Liu Z et al. introduced a simple relation between the target parameters (range and velocity) and the circuit parameters of chaos-generating system in 2007[International Journal of Bifurcation and Chaos, 5(2007)1735-1739]. With this relation, the measurement of the target parameters is transformed into estimation of the circuit parameters from the radar return signals. However, how to estimate the parameters is not given. In this paper, we do further research based on Liu Z and we propose a new principle of getting the target velocity by estimating the scaling parameter of chaos-generating system. First, we derive the relation between the target velocity and the scaling parameter of chaos-generating system, and the circuit parameter estimation is transformed into the scaling parameter estimation. Then a new method for scaling parameter estimation of chaotic system is proposed by exploiting the chaotic synchronization property. Finally, computer simulation results show the effectiveness of the proposed velocity measurement principle in this paper.

关键词： Chaos synchronization Parameter estimation Velocity measurement

来源： cnki会议评论

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太阳能学报 2019年第2期40卷 319-325页

作者：谢淼徐龙君胡金凤重庆大学煤矿灾害动力学与控制国家重点实验室重庆400044

以碳毡和碳布为电极材料,老龄垃圾渗滤液为阳极底物构建生物阴极型微生物燃料电池(MFC),考察碳毡和碳布分别作为阴极和阳极材料时对MFC明在阳极材料相同时,碳毡阴极MFC料相同时,碳布阳极MFC输出电压和功率密度最大(分别为294 mV、95.31 ... 详细信息

以碳毡和碳布为电极材料,老龄垃圾渗滤液为阳极底物构建生物阴极型微生物燃料电池(MFC),考察碳毡和碳布分别作为阴极和阳极材料时对MFC明在阳极材料相同时,碳毡阴极MFC料相同时,碳布阳极MFC输出电压和功率密度最大(分别为294 mV、95.31 mW/m^3)、化学需氧量和氨氮去除率最大(分别为58.78%、74.38%);阳极、阴极均为碳布的MFC内阻最小(308Ω),阳极、阴极均为碳毡的MFC内阻最大(347Ω)。

关键词：微生物燃料电池生物阴极老龄垃圾渗滤液电极材料产电特征废水处理