Pub Date : 2017-06-01DOI: 10.1109/NAECON.2017.8268800
L. A. Hsia, G. Vernizzi, M. Lanzerotti, D. Langley
This paper extends a methodology for microelectronics verification to the situation in which signal switches are applied to library circuits containing INV, NAND2, NOR2, NAND3, and NOR3 gates. Monte Carlo methods are used to sample the frequency distributions of the topological genus of library circuits including a 4-bit adder.
{"title":"Sampling iso-functional signal switches in library circuits for microelectronics verification with topological constraints","authors":"L. A. Hsia, G. Vernizzi, M. Lanzerotti, D. Langley","doi":"10.1109/NAECON.2017.8268800","DOIUrl":"https://doi.org/10.1109/NAECON.2017.8268800","url":null,"abstract":"This paper extends a methodology for microelectronics verification to the situation in which signal switches are applied to library circuits containing INV, NAND2, NOR2, NAND3, and NOR3 gates. Monte Carlo methods are used to sample the frequency distributions of the topological genus of library circuits including a 4-bit adder.","PeriodicalId":306091,"journal":{"name":"2017 IEEE National Aerospace and Electronics Conference (NAECON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128557032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-06-01DOI: 10.1109/NAECON.2017.8268753
Kullen W. Waggoner, R. Lake
Electrostatic actuating bimorph beams are a MEMS device that can be used to control arrays of small micromirrors for optical scanning. Previous research has demonstrated that creating high-angle deflection using long repeating arms of bimorph beams is possible. However, the current devices lack precise control and measurement of the mirror deflection. This research effort proposes a solution to improve control and measurement by using segmented bias channels to control separate portions of the actuation arm. The device will function by allowing a selective actuation of different portions of the bimorph arm. The amount of mirror deflection will vary depending on which segments of the arm are actuated. This paper discusses modeling of these devices using segmented channels to actuate micro-mirrors using finite element analysis (FEA) software programs.
{"title":"Modeling of segmented controlled electrostatically actuated bimorph beams","authors":"Kullen W. Waggoner, R. Lake","doi":"10.1109/NAECON.2017.8268753","DOIUrl":"https://doi.org/10.1109/NAECON.2017.8268753","url":null,"abstract":"Electrostatic actuating bimorph beams are a MEMS device that can be used to control arrays of small micromirrors for optical scanning. Previous research has demonstrated that creating high-angle deflection using long repeating arms of bimorph beams is possible. However, the current devices lack precise control and measurement of the mirror deflection. This research effort proposes a solution to improve control and measurement by using segmented bias channels to control separate portions of the actuation arm. The device will function by allowing a selective actuation of different portions of the bimorph arm. The amount of mirror deflection will vary depending on which segments of the arm are actuated. This paper discusses modeling of these devices using segmented channels to actuate micro-mirrors using finite element analysis (FEA) software programs.","PeriodicalId":306091,"journal":{"name":"2017 IEEE National Aerospace and Electronics Conference (NAECON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128774666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-06-01DOI: 10.1109/NAECON.2017.8268791
M. Wicks
This paper presents the use of tailored covariance matrix estimates that may differ for the three components of the GLRT. These components are an adaptive filter and two different quadratic forms that function as a limiter and a detector. Expert reasoning is used to optimize the covariance matrix in each component.
{"title":"On the use of expert reasoning to enhance GLRT performance","authors":"M. Wicks","doi":"10.1109/NAECON.2017.8268791","DOIUrl":"https://doi.org/10.1109/NAECON.2017.8268791","url":null,"abstract":"This paper presents the use of tailored covariance matrix estimates that may differ for the three components of the GLRT. These components are an adaptive filter and two different quadratic forms that function as a limiter and a detector. Expert reasoning is used to optimize the covariance matrix in each component.","PeriodicalId":306091,"journal":{"name":"2017 IEEE National Aerospace and Electronics Conference (NAECON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128154451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-06-01DOI: 10.1109/NAECON.2017.8268721
Khalfalla Awedat, Almabrok E. Essa, V. Asari, David Stoppenbrink
Sparse representation-based classification (SRC) has become one of the most powerful methods for robust face recognition. However, there are some limitations of SRC performance at the presence of noise, occlusion, and illumination variation problems, which make it unstable. Therefore, we investigate the performance of SRC under different data conditions by applying the most powerful optimization methods based on SRC and focusing on the corrections between data samples and the sparseness. For evaluation, we utilize several challenging face datasets that include diversity of illumination and occlusion conditions.
{"title":"Sparse representation based classification performance under different optimization forms for face recognition","authors":"Khalfalla Awedat, Almabrok E. Essa, V. Asari, David Stoppenbrink","doi":"10.1109/NAECON.2017.8268721","DOIUrl":"https://doi.org/10.1109/NAECON.2017.8268721","url":null,"abstract":"Sparse representation-based classification (SRC) has become one of the most powerful methods for robust face recognition. However, there are some limitations of SRC performance at the presence of noise, occlusion, and illumination variation problems, which make it unstable. Therefore, we investigate the performance of SRC under different data conditions by applying the most powerful optimization methods based on SRC and focusing on the corrections between data samples and the sparseness. For evaluation, we utilize several challenging face datasets that include diversity of illumination and occlusion conditions.","PeriodicalId":306091,"journal":{"name":"2017 IEEE National Aerospace and Electronics Conference (NAECON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127845771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-06-01DOI: 10.1109/NAECON.2017.8293874
K. Allen, D. Dykes, Katherine M. Bowland, D. Landgren
In this work, a simulation study of a meta- surface antenna demonstrates a recon gurable con- ductive topology that alters the radiation characteris- tics of the antenna. Surrogate resistance, inductance, and capacitance values are used to model the conduc- tivity change mimicking the response of micro-heaters forcing metal-insulator-transitions in vanadium diox- ide switches. These switches connect sub-wavelength metallic patches arrayed across the surface of the aper- ture (i.e. metasurface). This enables a thermally con- trolled conductive topology as a mechanism to ma- nipulate the radiation characteristics of the metasur- face for desired performance, e.g. frequency, polariza- tion, radiation pattern. In this work, frequency agility and beam pattern recon gurability are demonstrated through simulations.
{"title":"Metasurface antenna with thermally controlled recon gurable states: a simulation study","authors":"K. Allen, D. Dykes, Katherine M. Bowland, D. Landgren","doi":"10.1109/NAECON.2017.8293874","DOIUrl":"https://doi.org/10.1109/NAECON.2017.8293874","url":null,"abstract":"In this work, a simulation study of a meta- surface antenna demonstrates a recon gurable con- ductive topology that alters the radiation characteris- tics of the antenna. Surrogate resistance, inductance, and capacitance values are used to model the conduc- tivity change mimicking the response of micro-heaters forcing metal-insulator-transitions in vanadium diox- ide switches. These switches connect sub-wavelength metallic patches arrayed across the surface of the aper- ture (i.e. metasurface). This enables a thermally con- trolled conductive topology as a mechanism to ma- nipulate the radiation characteristics of the metasur- face for desired performance, e.g. frequency, polariza- tion, radiation pattern. In this work, frequency agility and beam pattern recon gurability are demonstrated through simulations.","PeriodicalId":306091,"journal":{"name":"2017 IEEE National Aerospace and Electronics Conference (NAECON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134048800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-06-01DOI: 10.1109/NAECON.2017.8268796
A. Mingardi, W.-D. Zhang, E. Brown
Ultrafast 1550-nm extrinsic photoconductivity in GaAs:Er makes it possible to fabricate THz photoconductive devices having performance comparable to GaAs:Er devices based on traditional 780-nm intrinsic photoconductivity. This paper addresses the effect of Er doping concentration and its associated ErAs quantum-dot formation on THz device performance, focusing on photoconductive switches.
{"title":"THz performance of 1550-nm-driven photoconductive switches made from GaAs:Er with ErAs quantum dots","authors":"A. Mingardi, W.-D. Zhang, E. Brown","doi":"10.1109/NAECON.2017.8268796","DOIUrl":"https://doi.org/10.1109/NAECON.2017.8268796","url":null,"abstract":"Ultrafast 1550-nm extrinsic photoconductivity in GaAs:Er makes it possible to fabricate THz photoconductive devices having performance comparable to GaAs:Er devices based on traditional 780-nm intrinsic photoconductivity. This paper addresses the effect of Er doping concentration and its associated ErAs quantum-dot formation on THz device performance, focusing on photoconductive switches.","PeriodicalId":306091,"journal":{"name":"2017 IEEE National Aerospace and Electronics Conference (NAECON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114522340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-06-01DOI: 10.1109/NAECON.2017.8268795
Jun Ren, M. I. Shams, Zhenguo Jiang, P. Fay, Lei Liu
Tunable and reconfigurable terahertz (THz) devices such as modulators/variable attenuators, tunable filters, coded apertures, phase shifters and high-level switches (e.g., DPDT) that are required for advanced imaging and adaptive wireless communication applications are challenging to realize. We report a promising approach to develop the above THz devices based on spatially-resolved optical modulation (SROM) using photo-induced (PI) free carriers in semiconductors. The fundamental mechanism for this approach will first be introduced followed by prototype demonstrations for reconfigurable coded-aperture imaging masks, beam steering/forming antennas and waveguide-based tunable attenuators. The potential to develop more advanced tunable/reconfigurable THz devices (e.g., tunable delay lines, SPDT, DPDT switches) using optically-controlled waveguide architectures such as PI electromagnetic band gap (EBG) structures and dynamically-reconfigurable PI substrate-integrated waveguides (SIWs) will also be discussed on the basis of performance-improved SROM using the so-called mesa-array technique.
{"title":"Optically controlled tunable and reconfigurable Terahertz devices","authors":"Jun Ren, M. I. Shams, Zhenguo Jiang, P. Fay, Lei Liu","doi":"10.1109/NAECON.2017.8268795","DOIUrl":"https://doi.org/10.1109/NAECON.2017.8268795","url":null,"abstract":"Tunable and reconfigurable terahertz (THz) devices such as modulators/variable attenuators, tunable filters, coded apertures, phase shifters and high-level switches (e.g., DPDT) that are required for advanced imaging and adaptive wireless communication applications are challenging to realize. We report a promising approach to develop the above THz devices based on spatially-resolved optical modulation (SROM) using photo-induced (PI) free carriers in semiconductors. The fundamental mechanism for this approach will first be introduced followed by prototype demonstrations for reconfigurable coded-aperture imaging masks, beam steering/forming antennas and waveguide-based tunable attenuators. The potential to develop more advanced tunable/reconfigurable THz devices (e.g., tunable delay lines, SPDT, DPDT switches) using optically-controlled waveguide architectures such as PI electromagnetic band gap (EBG) structures and dynamically-reconfigurable PI substrate-integrated waveguides (SIWs) will also be discussed on the basis of performance-improved SROM using the so-called mesa-array technique.","PeriodicalId":306091,"journal":{"name":"2017 IEEE National Aerospace and Electronics Conference (NAECON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115181509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-06-01DOI: 10.1109/NAECON.2017.8268717
Hussin K. Ragb, V. Asari
In this paper we present a new descriptor based on shape features for human detection. The shape features are extracted based on both, the image gradients, and the local phase in color space. The fusing of these complementary information yields to capture a broad range of the human appearance details that improves the detection accuracy. The proposed features are formed by computing the phase congruency of the three-color channels in addition to the gradient magnitude and orientation for each pixel in the image with respect to its neighborhood. Only the maximum phase congruency values are selected from the corresponding color channels. The histogram of oriented phase and the histogram of oriented gradients for the local regions of the image, are determined. These histograms are concatenated to construct the proposed descriptor and it is named as Fused Gradients and local Phase in Color space (FGPC). Several experiments were performed to test and evaluate the detection performance of the proposed descriptor. A linear support vector machine (SVM) classifier is used to train the pedestrians. The experimental results show that the human detection system based on the proposed features has less error rates and better detection performance over a set of state of the art feature extraction methodologies.
{"title":"Fused shape features based on gradient and local phase in color domain","authors":"Hussin K. Ragb, V. Asari","doi":"10.1109/NAECON.2017.8268717","DOIUrl":"https://doi.org/10.1109/NAECON.2017.8268717","url":null,"abstract":"In this paper we present a new descriptor based on shape features for human detection. The shape features are extracted based on both, the image gradients, and the local phase in color space. The fusing of these complementary information yields to capture a broad range of the human appearance details that improves the detection accuracy. The proposed features are formed by computing the phase congruency of the three-color channels in addition to the gradient magnitude and orientation for each pixel in the image with respect to its neighborhood. Only the maximum phase congruency values are selected from the corresponding color channels. The histogram of oriented phase and the histogram of oriented gradients for the local regions of the image, are determined. These histograms are concatenated to construct the proposed descriptor and it is named as Fused Gradients and local Phase in Color space (FGPC). Several experiments were performed to test and evaluate the detection performance of the proposed descriptor. A linear support vector machine (SVM) classifier is used to train the pedestrians. The experimental results show that the human detection system based on the proposed features has less error rates and better detection performance over a set of state of the art feature extraction methodologies.","PeriodicalId":306091,"journal":{"name":"2017 IEEE National Aerospace and Electronics Conference (NAECON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120878346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-06-01DOI: 10.1109/NAECON.2017.8268792
Hamza Elraash, M. Wicks, Abdalla Fadel, Turki M. Alanazi, James Reed, Daryl Osterloh
The goal of this research is to sample and process the measured data which has been collected mono-statically using a Marine Radar. This class of Radar is commonly used aboard vessels for obstacle avoidance and situational awareness. Therefore, marine radars use non-coherent radio wave signals, and hence, are inherently incompatible for imaging applications. In this research, non-coherent signals are made by cohering transmit and scattered waveforms. These “pseudo-coherent” waveforms can be used for many purposes, such as Tomography. In general, the aim of this research is provide coherent technology using affordable marine radars.
{"title":"Cohering a pulse train in magnetron oscillator","authors":"Hamza Elraash, M. Wicks, Abdalla Fadel, Turki M. Alanazi, James Reed, Daryl Osterloh","doi":"10.1109/NAECON.2017.8268792","DOIUrl":"https://doi.org/10.1109/NAECON.2017.8268792","url":null,"abstract":"The goal of this research is to sample and process the measured data which has been collected mono-statically using a Marine Radar. This class of Radar is commonly used aboard vessels for obstacle avoidance and situational awareness. Therefore, marine radars use non-coherent radio wave signals, and hence, are inherently incompatible for imaging applications. In this research, non-coherent signals are made by cohering transmit and scattered waveforms. These “pseudo-coherent” waveforms can be used for many purposes, such as Tomography. In general, the aim of this research is provide coherent technology using affordable marine radars.","PeriodicalId":306091,"journal":{"name":"2017 IEEE National Aerospace and Electronics Conference (NAECON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134348466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-06-01DOI: 10.1109/NAECON.2017.8268767
A. Brettin, Cobey L. McGinnis, K. F. Blanchette, Y. Nesmelov, N. Limberopoulos, D. Walker, A. Urbas, V. Astratov
Microspherical Nanoscopy uses a microsphere as a contact lens which allows for resolving nanometer sized objects using visible light. Nanoplasmonic structures have been used in combination with microspherical nanoscopy to achieve resolutions beyond the classical diffraction limit. The mechanisms of such super-resolution imaging can include the optical near field coupling and the virtual image magnification effects. In this work, we quantify the resolution of microspherical nanoscopy using a basic fluorescence microscope equipped with a standard 40× (NA = 0.6) objective which can be found in most of the labs performing histology or microscopy analyses in a clinical environment. We perform the resolution quantification in three distinct structures: (1) F-Actin proteins on a microscope slide, (2) F-Actin proteins imaged through a high index microsphere on a microscope slide, and (3) F-Actin proteins imaged through a high index microsphere on a nanoplasmonic array. The high index microspheres (n∼2) are embedded in an elastomer slab. Using a microscope we achieve a resolution of (1) ∼λ/0.7, (2) − λ/2.5, and (3) ∼λ/2.8 for each situation.
微球纳米显微镜使用微球作为隐形眼镜，它允许使用可见光分辨纳米大小的物体。纳米等离子体结构已与微球纳米显微镜相结合，以达到超越经典衍射极限的分辨率。这种超分辨率成像的机理包括光学近场耦合和虚像放大效应。在这项工作中，我们使用配备标准40× (NA = 0.6)物镜的基本荧光显微镜来量化微球纳米显微镜的分辨率，这种显微镜可以在大多数实验室进行组织学或显微镜分析的临床环境中找到。我们在三种不同的结构中进行分辨率定量:(1)显微镜载玻片上的F-Actin蛋白，(2)显微镜载玻片上高折射率微球成像的F-Actin蛋白，以及(3)纳米等离子体阵列上高折射率微球成像的F-Actin蛋白。将高折射率微球(n ~ 2)嵌入弹性体板中。使用显微镜，我们在每种情况下实现了(1)~ λ/0.7，(2)−λ/2.5和(3)~ λ/2.8的分辨率。
{"title":"Quantification of resolution in microspherical nanoscopy with biological objects","authors":"A. Brettin, Cobey L. McGinnis, K. F. Blanchette, Y. Nesmelov, N. Limberopoulos, D. Walker, A. Urbas, V. Astratov","doi":"10.1109/NAECON.2017.8268767","DOIUrl":"https://doi.org/10.1109/NAECON.2017.8268767","url":null,"abstract":"Microspherical Nanoscopy uses a microsphere as a contact lens which allows for resolving nanometer sized objects using visible light. Nanoplasmonic structures have been used in combination with microspherical nanoscopy to achieve resolutions beyond the classical diffraction limit. The mechanisms of such super-resolution imaging can include the optical near field coupling and the virtual image magnification effects. In this work, we quantify the resolution of microspherical nanoscopy using a basic fluorescence microscope equipped with a standard 40× (NA = 0.6) objective which can be found in most of the labs performing histology or microscopy analyses in a clinical environment. We perform the resolution quantification in three distinct structures: (1) F-Actin proteins on a microscope slide, (2) F-Actin proteins imaged through a high index microsphere on a microscope slide, and (3) F-Actin proteins imaged through a high index microsphere on a nanoplasmonic array. The high index microspheres (n∼2) are embedded in an elastomer slab. Using a microscope we achieve a resolution of (1) ∼λ/0.7, (2) − λ/2.5, and (3) ∼λ/2.8 for each situation.","PeriodicalId":306091,"journal":{"name":"2017 IEEE National Aerospace and Electronics Conference (NAECON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126760691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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