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2017 IEEE National Aerospace and Electronics Conference (NAECON)最新文献

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Motion model enabled appearance prediction for partial human body tracking in robot follower 运动模型实现了机器人局部人体跟踪的外观预测
Pub Date : 2017-06-01 DOI: 10.1109/NAECON.2017.8268720
Ying Li, Sihao Ding, Yuan F. Zheng, D. Xuan
Robot follower, a robot following its human operator, has found its application in many areas such as senior care, manufacturing, transportation, and etc. Tracking the target person is a key technique for the follower. In this paper, we present a new method for partial human body tracking, namely human feet tracking. Human feet tracking suffers from weak visual features and appearance variations, making it more critical to continuously update the foot appearance model. We propose to utilize the human motion model to predict foot appearance. It is achieved by first defining a motion phase to each human foot appearance. Due to the fact that the foot appearance across different motion cycles with the same motion phase is similar, we can predict the target appearance using the current motion phase and the target images stored from previous walking cycles. A phase labeled exemplar pool is built to serve the motion phase indexed appearance searching. We combine this phase labeled exemplar pool into particle filtering and have achieved robust human feet tracking.
机器人跟随者,即机器人跟随人类操作者的一种行为,已经在许多领域得到了应用,如老年护理、制造、运输等。跟踪目标人物是跟踪者的一项关键技术。本文提出了一种局部人体跟踪的新方法,即人体足部跟踪。人类脚部跟踪存在视觉特征和外观变化较弱的问题,因此不断更新脚部外观模型变得更加关键。我们建议利用人体运动模型来预测足部外观。它是通过首先定义每个人的脚外观的运动阶段来实现的。由于相同运动阶段的不同运动周期的足部外观是相似的,我们可以使用当前运动阶段和从以前的步行周期中存储的目标图像来预测目标外观。建立了一个相位标记的样本池,用于运动相位索引的外观搜索。我们将这一阶段标记的样本池与粒子滤波相结合,实现了鲁棒的人体足部跟踪。
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引用次数: 1
Gate density advantage of parallel-operation-oriented FPGA architecture 面向并行运算的FPGA结构的栅极密度优势
Pub Date : 2017-06-01 DOI: 10.1109/NAECON.2017.8268761
Takumi Fujimori, Minora Watanabe
Recently, many studies of field programmable gate array (FPGA) hardware accelerators have been reported, in addition to studies of general-purpose computing on graphics processing units (GPGPUs), Xeon Phi, and so on. Since parallel processing is indispensable for such accelerating applications on FPGAs, implementing numerous parallel processing circuits is important to improve the performance of such FPGA hardware accelerators. When implementing a parallel operation for a conventional FPGA, some waste occurs: the same context is stored on numerous regions of configuration memory. This waste presents a critical issue because FPGAs used as accelerators perform parallel processing exclusively in most cases. This paper therefore proposes a parallel-operation-oriented FPGA exploiting a common configuration context. Herein, we describe the advantages of gate density, propagation delay, and compilation time in parallel-operation-oriented FPGAs.
最近,除了对图形处理单元(gpgpu)、Xeon Phi等通用计算的研究外,还报道了许多对现场可编程门阵列(FPGA)硬件加速器的研究。由于并行处理对于FPGA上的加速应用是必不可少的,因此实现大量并行处理电路对于提高FPGA硬件加速器的性能非常重要。在为传统FPGA实现并行操作时,会产生一些浪费:相同的上下文存储在配置内存的许多区域中。这种浪费提出了一个关键问题,因为在大多数情况下,用作加速器的fpga只执行并行处理。因此,本文提出了一种利用通用配置上下文的面向并行操作的FPGA。在此,我们描述了门密度、传播延迟和编译时间在面向并行操作的fpga中的优势。
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引用次数: 1
The impact of reflected waves on the reconstruction of tomographic imaging 反射波对层析成像重建的影响
Pub Date : 2017-06-01 DOI: 10.1109/NAECON.2017.8268789
Abdunaser Abdusamad, M. Wicks, H. Abdelbagi, Abdulhakim Daluom, Muftah Akroush, Turki M. Alanazi
Tomography is defined as an image reconstruction technique that exploits different points of view, and different observation points. Generally, tomographic images can be constructed by illuminating the target with a microwave signals and measuring the energy that passes through the target e.g. transmission tomography, or reflected from the target as in reflection tomography. Reflection tomography is used in some cases when the transmission tomography cannot be accomplished due to physical limitations, or high attenuation losses due to high material impedance. In this paper, we investigate the impact of surfaces placed beside the transmitter and/or the receiver, and quantify these effects via image analysis at high frequency domain. Our goal in this paper is to reduce the effect of side-lobes that may appear as result of these surfaces. We reduce the reflected waves from the surfaces by designing the surfaces using specific materials or by changing the placement of both the transmitter and/or receiver antenna. Moreover, the resulting tomographic image will be processed using the Winner filter to remove any remaining noise.
断层扫描被定义为一种利用不同视点和不同观测点的图像重建技术。通常,层析成像可以通过用微波信号照射目标并测量通过目标的能量(如透射层析成像)或从目标反射的能量(如反射层析成像)来构建。当由于物理限制或由于高材料阻抗导致的高衰减损失而无法完成透射层析成像时,在某些情况下使用反射层析成像。在本文中,我们研究了放置在发射器和/或接收器旁边的表面的影响,并通过高频域的图像分析来量化这些影响。我们在本文中的目标是减少由于这些表面可能出现的侧瓣的影响。我们通过使用特定材料设计表面或通过改变发射器和/或接收器天线的位置来减少来自表面的反射波。此外,生成的层析图像将使用Winner滤波器进行处理,以去除任何剩余的噪声。
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引用次数: 5
Modeling of memristor device & analysis of stability issues 忆阻器的建模及稳定性问题分析
Pub Date : 2017-06-01 DOI: 10.1109/NAECON.2017.8268782
Ayesha Zaman, Weisong Wang, G. Subramanyam
A robust physical model governing trap assisted inelastic tunneling mechanism for the conducting area of a memristor device with an intermediate thickness dielectric (<100nm) has been developed. This model takes into account, the contribution of both the oxygen vacancies and the defects within the oxide responsible for the significant increase of charge carriers through this non-volatile memory device. A one dimensional simulator has been designed here that shows reasonable compatibility between the practically obtained values with that of the simulated ones. Here tunneling of electrons between variable energy states of the different layer materials within the device, dominates the switching mechanism that involves a strong non-linearity of the electric field dependence.
建立了一个稳健的物理模型,用于控制中等厚度电介质(<100nm)的忆阻器器件的导电区陷阱辅助非弹性隧穿机制。该模型考虑了氧空位和氧化物内部缺陷的贡献,通过这种非易失性存储器件,载流子数量显著增加。本文设计了一个一维仿真器,实际得到的数值与仿真得到的数值具有较好的相容性。在这里,电子在器件内不同层材料的可变能态之间的隧穿,主导了涉及电场依赖的强非线性的开关机制。
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引用次数: 1
Slanted electromagnetic wave propagation through atmospheric phase turbulence using altitude-dependent structure parameter 基于高度相关结构参数的斜电磁波在大气相湍流中的传播
Pub Date : 2017-06-01 DOI: 10.1109/NAECON.2017.8268766
A. Mohamed, Monish R. Chatterjee
Electromagnetic propagation through MVKS-type turbulence is examined assuming a slanted path using the Hufnagel-Valley model for the structure parameter. The propagation path consists of turbulent (Lt) and non-turbulent (LD) zones; using a split-step approach, the diffracted field characteristics for Gaussian-profile and Bessel beams are examined under varying turbulence strengths, and Lt/ Ld ratios. Cross-correlation (CC) products are computed as performance measures relative to non-turbulent recovery.
采用Hufnagel-Valley模型作为结构参数,研究了电磁传播通过mvks型湍流的倾斜路径。传播路径由湍流区(Lt)和非湍流区(LD)组成;采用分步法,研究了不同湍流强度和Lt/ Ld比下高斯剖面和贝塞尔光束的衍射场特性。相互关联(CC)产品被计算为相对于非湍流恢复的性能度量。
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引用次数: 2
Using FTIR spectral response signals to separate, characterize and quantify the effects of silicone or rubber-based adhesive materials on microsphere lens enhanced MWIR SLS photo detectors 利用FTIR光谱响应信号分离、表征和量化硅酮或橡胶基粘合剂材料对微球透镜增强MWIR SLS光电探测器的影响
Pub Date : 2017-06-01 DOI: 10.1109/NAECON.2017.8268769
D. Megherbi, P. Mack, J. DiZoglio, M. I. Vakil, N. Limberopoulos, A. Urbas
In our prior work we have analyzed, proposed global performance metrics, and shown how MWIR microsphere lens-enhanced single detectors have exhibited an increase in detector sensitivity and reduction in Noise to Signal Ratio (NSR). We have shown that, in general, the microsphere lens reduces the detector NSR independently of the increase in the enhanced detector sensitivity. We have also shown how microsphere lens material absorptions and misalignments can affect and reduce the microsphere lens-enhanced MWIR detector sensitivity. When placing a microsphere lens on a photo-detector, usually an optical silicone-or rubber adhesive is used to adhere and hold the microsphere lens on the single photo-detector. In this paper, we present a novel hybrid model-based and experimental data driven-based technique for analysis and characterization of the effect of the adhesive material on microsphere-lens-enhanced SLS single photo-detector sensitivity. In this work these adhesive material characteristics are modeled and compared to experimental microsphere-enhanced single detector FTIR spectral data. As we demonstrate here, based on the data considered, the results show that the adhesive material appears to adversely affect and decrease the detector overall sensitivity, and in some instances, by more than 40% depending on the adhesive material index of refraction, even with a high adhesive material transmittance/transparency.
在我们之前的工作中,我们分析并提出了全局性能指标,并展示了MWIR微球透镜增强的单探测器如何显示出探测器灵敏度的提高和噪声与信号比(NSR)的降低。我们已经表明,在一般情况下,微球透镜降低了探测器的NSR独立于增强的探测器灵敏度的增加。我们还展示了微球透镜材料的吸收和错位如何影响和降低微球透镜增强的MWIR探测器的灵敏度。当将微球透镜放置在光电探测器上时,通常使用光学硅或橡胶粘合剂将微球透镜粘附在单个光电探测器上。在本文中,我们提出了一种新的基于模型和实验数据驱动的混合技术,用于分析和表征粘附材料对微球透镜增强SLS单光探测器灵敏度的影响。在这项工作中,这些粘附材料的特性进行了建模,并与实验微球增强单探测器FTIR光谱数据进行了比较。正如我们在这里所展示的,基于所考虑的数据,结果表明,粘接剂材料似乎会对探测器的整体灵敏度产生不利影响并降低灵敏度,在某些情况下,根据粘接剂材料的折射率,即使具有高的粘接剂材料透光率/透明度,也会降低40%以上。
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引用次数: 3
Passive and active sensing — Plasmonic grating geometries and wavelength-dependent focus depth in IR detectors 被动和主动传感-红外探测器中等离子体光栅的几何形状和波长相关的聚焦深度
Pub Date : 2017-06-01 DOI: 10.1109/NAECON.2017.8268765
Patrick R. Kennedy, T. Laurvick
The objective for this research is to determine a relationship between plasmonic grating geometries and the wavelength-dependent focus depth. This research is focused on enhancing the signal collected by infrared detectors by using a metal grating as a planar lens to focus light in the detecting region of the substrate. This can be used to maintain a thinner absorbing region and possibly to create multi-color imaging in a single pixel.
本研究的目的是确定等离子体光栅几何形状与波长相关聚焦深度之间的关系。本研究的重点是利用金属光栅作为平面透镜,将光聚焦在基板的探测区域,从而增强红外探测器采集到的信号。这可用于保持较薄的吸收区域,并可能在单个像素中创建多色成像。
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引用次数: 0
Demonstrating the limitations on target detection (Pd) and false alarm control (Pfa) due to cross-correlated interference in a bistatic / multistatic radar 演示了在双基地/多基地雷达中由于交叉相关干扰对目标检测(Pd)和虚警控制(Pfa)的限制
Pub Date : 2017-06-01 DOI: 10.1109/NAECON.2017.8268793
Turki M. Alanazi, James Reed, Hamdi Abdelbaagi, Abdunaser Abdusamad, Abdulhakim Daluom, Mufatah Akroush, Hamza Ekraash, M. Wicks
The goal of this research is to develop a method that allows for processing of bistatic marine radar signals, in order to demonstrate an improvement in target detection (Pd) and false alarm control (Pfa) in systems limited by cross-correlated interference. In this work, a method is presented for coherent processing of signals from a bistatic magnetron oscillator based marine radar. The feasibility of this approach was previously demonstrated for a monostatic radar through a hardware modification that allowed for capture of data via a Xilinx ADC and processing in FPGAs. It is demonstrated here that operating two of radars in this manner and combining their resulting signals allows for an improvement in overall detection and track. Our approach works by sampling the transmitted and received signals at each radar. Cross-correlations between all four combinations of transmitted and received signals are used to demonstrate the limits due to mutual interference in a bistatic/multistatic system of radars. This processing is successfully demonstrated in software, showing the potential for coherency between two marine radars. In general, bistatic coherent radars are very expensive, and this work provides a method for achieving the equivalent coherent performance using a two modified non-coherent radar systems.
本研究的目标是开发一种允许处理双基地海洋雷达信号的方法,以证明在受交叉相关干扰限制的系统中目标检测(Pd)和假警报控制(Pfa)的改进。本文提出了一种基于双基地磁控管振荡器的船用雷达信号相干处理方法。这种方法的可行性之前已经在单站雷达上进行了演示,通过硬件修改,允许通过Xilinx ADC捕获数据并在fpga中进行处理。这里证明,以这种方式操作两台雷达并将其产生的信号结合起来,可以改善整体探测和跟踪。我们的方法是对每个雷达的发射和接收信号进行采样。发射和接收信号的所有四种组合之间的相互关联用于演示双基地/多基地雷达系统中相互干扰的限制。这种处理在软件中成功地进行了演示,显示了两台船用雷达之间的相干性潜力。一般来说,双基地相干雷达是非常昂贵的,这项工作提供了一种方法来实现等效的相干性能,使用两个改进的非相干雷达系统。
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引用次数: 1
Understanding vulnerabilities in ReRAM devices for trust in semiconductor designs 了解ReRAM器件中的漏洞,以信任半导体设计
Pub Date : 2017-06-01 DOI: 10.1109/NAECON.2017.8268798
T. Schultz, R. Jha
This paper discusses attack vulnerabilities in Resistive Random Access Memory (ReRAM) devices that can be potentially triggered by Trojan circuits. Systematic experiments were performed on Ru/MgO/Ti/W based ReRAM devices in 1R and 1T1R configurations. Our observations indicate that vulnerabilities in ReRAM include destabilization of filament due to current overshoot, local heating, introduction of parasitic capacitances, and glitches in the source voltages. These studies are critical to design more robust ReRAM devices that are immune to hardware attacks.
本文讨论了阻性随机存取存储器(ReRAM)器件中可能被木马电路触发的攻击漏洞。对基于Ru/MgO/Ti/W的ReRAM器件在1R和1T1R两种配置下进行了系统实验。我们的观察表明,ReRAM的漏洞包括由于电流过调、局部加热、寄生电容的引入以及源电压的小故障而导致的灯丝不稳定。这些研究对于设计更健壮的、不受硬件攻击的ReRAM设备至关重要。
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引用次数: 1
Stochastic approximation for learning rate optimization for generalized relevance learning vector quantization 广义相关学习向量量化中学习率优化的随机逼近
Pub Date : 2017-06-01 DOI: 10.1109/NAECON.2017.8268804
Daniel W. Steeneck, Trevor J. Bihl
Herein the authors apply the stochastic approximation method of Kiefer and Wolfowitz to optimize learning rate selection for Generalized Relevance Learning Vector Quantization — Improved (GRLVQI) neural networks with application to Z-Wave cyber-physical device identification. Recent work on full factorial models for GRLVQI optimal settings has shown promise, but is computationally costly and not feasible for large datasets. Results using stochastic optimization illustrate show fast convergence to high classification rates.
本文采用Kiefer和Wolfowitz的随机逼近方法优化广义相关学习向量量化改进(GRLVQI)神经网络的学习率选择,并将其应用于Z-Wave网络物理设备识别。最近对GRLVQI优化设置的全因子模型的研究显示出了希望,但计算成本高,对于大型数据集不可行。结果表明,随机优化算法收敛速度快,分类率高。
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引用次数: 1
期刊
2017 IEEE National Aerospace and Electronics Conference (NAECON)
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