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2016 IEEE Advanced Information Management, Communicates, Electronic and Automation Control Conference (IMCEC)最新文献

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Study on self-adaptive fusion model with DST and PCR5 基于DST和PCR5的自适应融合模型研究
Lujun Li, Yanhong Duan, Hui Xie, Changxi Li
Classical conflict is used to express conflict degree in DST. But many studies show that it is not efficient in measuring conflict, because it only consider non-inclusive between evidences. To solve this problem, a new modified measure method of evidence conflict is proposed, which is based on conflict coefficient K and relative coefficient between evidences. It not only reflects the non-inclusive, but also reflects the differences between evidences. Then this paper gives two kinds of self-adaptive fusion model on the basis of DST and PCR5. It is proved by simulation that they are effective in dealing with conflict information. They converge quickly and help the system make the right decision logically. At last, comparison and analysis have be done between two models and some advices are given.
DST中的冲突程度用经典冲突来表示。但许多研究表明,由于它只考虑证据之间的非包容性,在衡量冲突方面效率不高。为了解决这一问题,提出了一种基于冲突系数K和证据间相对系数的证据冲突度量方法。它不仅反映了证据的非包容性,也反映了证据之间的差异。然后给出了基于DST和PCR5的两种自适应融合模型。仿真结果表明,该算法在处理冲突信息方面是有效的。它们迅速收敛,并帮助系统在逻辑上做出正确的决策。最后,对两种模型进行了比较分析,并提出了一些建议。
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引用次数: 0
Face recognition based on wavelet transform and neural network 基于小波变换和神经网络的人脸识别
Yu Fan, W. Zhu, Guangzhou Bai, Taibo Li
On the basis of explaining the principles of wavelet transform, neural network, and wavelet neural network, the paper examines two methods of face recognition: one is based on neural network, the other is based on wavelet neural network. The paper also offers the features and differences based on algorithmic simulation. The result of the stimulation reveals that face recognition using wavelet neural network can largely increase the accuracy rate.
在阐述小波变换、神经网络和小波神经网络原理的基础上,研究了基于神经网络和基于小波神经网络的两种人脸识别方法。在算法仿真的基础上,给出了两者的特点和区别。仿真结果表明,利用小波神经网络进行人脸识别可以大大提高准确率。
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引用次数: 3
A hybrid TOA/AOA positioning method based on GDOP-weighted fusion and its Accuracy Analysis 基于gdp加权融合的TOA/AOA混合定位方法及其精度分析
Fanzeng Kong, Xiukun Ren, Nae Zheng, Guojun Chen, Jiaan Zheng
Whereas the existing TOA/AOA positioning algorithm based on wireless sensor network fails to consider position error of anchor node(AN) so as to affect the positioning accuracy, this paper proposes a hybrid TOA/AOA positioning algorithm based on GDOP-weighted fusion (G--TOA/AOA). The paper deduces Geometric Dilution of Precision (GDOP) of TOA/AOA positioning method based on single node (S-TOA/AOA). G-TOA/AOA algorithm utilizes GDOP of S-TOA/AOA to give corresponding weight to various rough estimates of blind node(BN), and weighted merge all rough estimates as position estimate of BN. Meanwhile, the paper deduces GDOP calculation formula of G-TOA/AOA algorithm. In the two different types of distribution situation of ANs, the paper analyzes the positioning accuracy of G-TOA/AOA algorithm. Simulation results show that positioning accuracy of G-TOA/AOA algorithm is superior to average weighted positioning algorithm and the positioning performance of G-TOA/AOA algorithm is better when ANs are in non-collinear distribution situation.
针对现有基于无线传感器网络的TOA/AOA定位算法没有考虑锚节点(AN)的位置误差而影响定位精度的问题,本文提出了一种基于gdopa加权融合的混合TOA/AOA定位算法(G—TOA/AOA)。推导了基于单节点的TOA/AOA定位方法(S-TOA/AOA)的几何精度稀释系数(GDOP)。G-TOA/AOA算法利用S-TOA/AOA的GDOP对盲节点(BN)的各种粗略估计赋予相应的权重,并对所有粗略估计进行加权合并作为BN的位置估计。同时,推导出了G-TOA/AOA算法的GDOP计算公式。在两种不同类型的ANs分布情况下,分析了G-TOA/AOA算法的定位精度。仿真结果表明,在ANs非共线分布情况下,G-TOA/AOA算法的定位精度优于平均加权定位算法,且定位性能更好。
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引用次数: 5
A robust damaged fingerprint identification algorithm based on deep learning 一种基于深度学习的鲁棒损伤指纹识别算法
Wang Yani, Wu Zhendong, Zhang Jianwu, Chen Hongli
With the development of science and the improvement of social information, Biological Recognition Technology (BIT) is becoming increasingly important. Among them, the fingerprint identification technology has become the hot spot because of its feasibility and reliability. The traditional fingerprint identification method relies on matching feature points to get the similarity. Undoubtedly, this method needs a long time to find the feature points, and with the rotation, scaling, damage and other problems of the fingerprint, the robustness is decreased seriously. Aiming at these problems, we propose a robust damaged fingerprint recognition algorithm, which is based on Convolution Neural Network (CNN) of deep learning. It not only has a high resistance to abnormal degeneration, and the recognition process is also simpler than the feature points matching algorithm. In the end of the essay, the recognition rate based on deep learning is compared with the fingerprint identification algorithm based on Kernel Principal Component Analysis (KPCA). Experiments' results show that fingerprint recognition based on deep learning has a higher robustness.
随着科学的发展和社会信息化程度的提高,生物识别技术(BIT)变得越来越重要。其中,指纹识别技术以其可行性和可靠性成为研究的热点。传统的指纹识别方法依靠匹配特征点来获得相似度。毫无疑问,该方法需要较长的时间来寻找特征点,并且由于指纹的旋转、缩放、损坏等问题,鲁棒性严重下降。针对这些问题,提出了一种基于深度学习卷积神经网络(CNN)的鲁棒损伤指纹识别算法。它不仅具有较高的抗异常退化性,而且识别过程也比特征点匹配算法简单。最后,对比了基于深度学习的指纹识别算法与基于核主成分分析(KPCA)的指纹识别算法的识别率。实验结果表明,基于深度学习的指纹识别具有较高的鲁棒性。
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引用次数: 6
Simulation analysis on static scattering characteristics of stealth aircraft 隐身飞机静态散射特性仿真分析
Lei Zhu, X. Liang, Jiong Li, Rui Li
The study of single and bistatic radar scattering characteristics on stealth aircraft, for the future of collaborative detection on aircraft swarms is of great significance. Based on the characteristics analysis of stealth aircraft, using the software FEKO to establish stealth aircraft model, focusing on simulation research in different polarization ways, single and bistatic radar static RCS, through calculation and analysis to build database of single and bistatic radar static RCS about typical stealth aircraft, providing data support for target RCS dynamic study.
研究单基地和双基地雷达对隐身飞机的散射特性,对于未来对飞机群的协同探测具有重要意义。在分析隐身飞机特性的基础上,利用FEKO软件建立隐身飞机模型,重点对不同极化方式下的单、双基地雷达静态RCS进行仿真研究,通过计算分析建立典型隐身飞机的单、双基地雷达静态RCS数据库,为目标RCS动态研究提供数据支持。
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引用次数: 6
Image classification based on hash codes and space pyramid 基于哈希码和空间金字塔的图像分类
Peng Tian-qiang, Li Fang
Sparse Coding is a widely used method to represent an image. However, sparse coding and its improved algorithms have the problem of complex computation and long running time and so on. For these problems, we propose an image classification method based on hash codes and space pyramid, which encodes local feature points with hash codes instead of sparse coding. Firstly, extract the local feature points from the images. Second, learn binary auto-encoder hashing functions, which map the local feature points into hash codes. Third, perform binary k-means cluster on the binary hash codes and generate the binary visual vocabularies. Finally, Combine with spatial pyramid matching model, and represent the image by the histogram vector of space pyramid, which is used in image classification. Experimental results show that compared with other sparse coding methods, our method has the shorter time of learning vocabularies and faster encoder speed and higher classification accuracy.
稀疏编码是一种广泛使用的图像表示方法。然而,稀疏编码及其改进算法存在计算量大、运行时间长等问题。针对这些问题,我们提出了一种基于哈希码和空间金字塔的图像分类方法,用哈希码代替稀疏编码对局部特征点进行编码。首先,从图像中提取局部特征点;其次,学习二进制自编码器哈希函数,它将局部特征点映射到哈希码中。第三,对二进制哈希码进行二进制k-means聚类,生成二进制视觉词汇表。最后,结合空间金字塔匹配模型,用空间金字塔直方图向量表示图像,用于图像分类。实验结果表明,与其他稀疏编码方法相比,我们的方法学习词汇的时间更短,编码器速度更快,分类精度更高。
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引用次数: 1
Coin detection and recognition in the natural scene 硬币在自然场景中的检测与识别
Zi-he Qiu, Ping Shi, Da Pan, Dixiu Zhong
Although there exists some methods for coin detection and recognition, it is still a challenging task, especially for coins in natural scene. This paper proposed a method to detect and recognize the coins in natural scene. In the detection part, the Hough detection method is applied to detect the coin areas in the images. Then radius ratio, color feature and relative position constraints are used to eliminate the noise circles. In the recognition part, a multilayer convolutional neural network is used to classify proposals and get the final recognition result. Experimental results show that the proposed method could successfully detect and recognize coins in the given images.
虽然已经有了一些硬币的检测和识别方法,但仍然是一项具有挑战性的任务,特别是对于自然场景中的硬币。本文提出了一种自然场景中钱币的检测与识别方法。在检测部分,采用霍夫检测方法对图像中的硬币区域进行检测。然后利用半径比、颜色特征和相对位置约束消除噪声圈。在识别部分,采用多层卷积神经网络对建议进行分类,得到最终的识别结果。实验结果表明,该方法可以在给定的图像中成功地检测和识别硬币。
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引用次数: 2
The key technology and simulation of UAV flight monitoring system 无人机飞行监控系统关键技术及仿真
Xu Pengbo, Ji Guodong, Lu Libin, Tan Lining, Ning Jigan
UAV flight safety is the first issue of the UAV's attention. The establishment of a UAV flight monitoring system not only meets the needs of the army but also has important significance. This paper introduces the development status and trends of aircraft fault prediction and health management at home and abroad. The key technologies of UAV flight monitoring system are analyzed, Including flight state parameters acquisition technology, parameter data real-time analysis technology, system condition monitoring model established and system prediction model establishment, system security model, security model and the prediction model of flight safety online monitoring technology, security model and prediction model of control instruction technology assessment. Small unmanned aircraft motion model is established. The pitching Angle, roll Angle, yaw Angle and engine speed are simulated experiment. At last, the paper introduces the function and the significance of the UAV flight monitoring system.
无人机飞行安全是无人机关注的首要问题。无人机飞行监控系统的建立不仅满足了军队的需要,而且具有重要的意义。介绍了国内外飞机故障预测与健康管理的发展现状和趋势。分析了无人机飞行监控系统的关键技术,包括飞行状态参数采集技术、参数数据实时分析技术、系统状态监测模型的建立和系统预测模型的建立、系统安全模型、飞行安全在线监测技术的安全模型和预测模型、控制指令技术评估的安全模型和预测模型。建立了小型无人机运动模型。对飞机的俯仰角、横摇角、偏航角和发动机转速进行了仿真试验。最后介绍了无人机飞行监控系统的功能和意义。
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引用次数: 4
Influence of the low-temperature AlN interlayers on the electrical properties of AlGaN/GaN heterostructure on Si substrate 低温AlN中间层对Si衬底上AlGaN/GaN异质结构电性能的影响
Zhiyuan He, Shaoqing Liu, J. Hu, Huawei Xu, Qingli Huang, Qunxing Liu
In this work, the electrical properties of AlGaN/GaN heterostructure grown on Si substrate with low-temperature AlN (LT-AlN) interlayers were investigated. Hall effect measurement was used to test the electrical properties of AlGaN/GaN heterostructure in all samples with different LT-AlN thickness. It is showed that the thickness of low-temperature AlN interlayers in the bufferlayer obviously effect the electrical properties of two-dimensional electron gas (2DEG) in the heterostructure channel. The sample with 15 nm LT-AlN interlayers reached the maximum electron mobility of 4090 cm2/Vs. Combined with XRD and AFM measurements, it is found that the dislocation density, surface roughness and stress conditions determined the electrical properties of 2DEG.
本文研究了低温AlN (LT-AlN)中间层在Si衬底上生长的AlGaN/GaN异质结构的电学性能。采用霍尔效应测量法测试了不同LT-AlN厚度样品中AlGaN/GaN异质结构的电学性能。结果表明,缓冲层中低温AlN夹层的厚度对异质结构通道中二维电子气(2DEG)的电学性能有明显影响。具有15 nm LT-AlN中间层的样品达到了4090 cm2/Vs的最大电子迁移率。结合XRD和AFM测试发现,位错密度、表面粗糙度和应力条件决定了2DEG的电学性能。
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引用次数: 1
Multi-UCAV cooperative autonomous attack path planning method under uncertain environment 不确定环境下多无人机协同自主攻击路径规划方法
Hanqiao Huang, Y. Wang, Huan Zhou, Kangsheng Dong, Heming Liu
Path planning of the unmanned aerial vehicle(UAV) under the condition of uncertainty of environment remains a challenge because of many constraints. In this paper, a multiple unmanned combat aerial vehicle (multi-UCAV) cooperative autonomous attack path planning method under complex and uncertain environment is put forward. A general framework of multi-UCAV cooperative combat and autonomous attack is designed. Then, the relative movement situation of the UCAV formation is studied and the task assignment model for attacking multi-target is established. On this basis, an improved ant colony algorithm (ACA) is used to solve the corresponding optimal problem. By taking the three degrees of freedom model of UCAV as a core and considering various constraints such as aerodynamic characteristics, thrust variation, target projection area and threat area, an accurate cooperative autonomous attack path planning model for multi-UCAV is built and an improved rolling pseudospectral method(RPM) is applied to calculate the optimal trajectory from the current location to the launch acceptable region. Simulation results show that the proposed ACA and RPM can deal with the task assignment and path planning of multi-UCAV effectively, and they have higher precision and better real-time compared with some existed methods.
在环境不确定的情况下,无人机的路径规划仍然是一个挑战,因为存在许多约束条件。提出了一种复杂不确定环境下多架无人机协同自主攻击路径规划方法。设计了多无人机协同作战与自主攻击的总体框架。然后,研究了无人机编队的相对运动情况,建立了攻击多目标的任务分配模型;在此基础上,采用改进的蚁群算法求解相应的最优问题。以无人飞行器三自由度模型为核心,综合考虑气动特性、推力变化、目标投射面积和威胁面积等约束条件,建立了多架无人飞行器精确协同自主攻击路径规划模型,并应用改进的滚动伪谱法(RPM)计算了从当前位置到发射可接受区域的最优弹道。仿真结果表明,所提出的ACA和RPM能够有效地处理多无人机的任务分配和路径规划问题,与现有方法相比,具有更高的精度和实时性。
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引用次数: 2
期刊
2016 IEEE Advanced Information Management, Communicates, Electronic and Automation Control Conference (IMCEC)
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