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A real-time gracefully degrading avionics system for unmanned aerial vehicles 一种用于无人机的实时优雅降级航空电子系统
2012 IEEE National Aerospace and Electronics Conference (NAECON) Pub Date : 2012-07-25 DOI: 10.1109/NAECON.2012.6531050
B. Sababha, O. Rawashdeh, W. Sa'deh
{"title":"A real-time gracefully degrading avionics system for unmanned aerial vehicles","authors":"B. Sababha, O. Rawashdeh, W. Sa'deh","doi":"10.1109/NAECON.2012.6531050","DOIUrl":"https://doi.org/10.1109/NAECON.2012.6531050","url":null,"abstract":"Graceful degradation is an approach for developing dependable safety-critical embedded applications, where redundant active or standby resources are used to cope with faults through system reconfiguration at run-time. Compared to traditional hardware and software redundancy, it is a promising technique that may achieve dependability with a significant reduction in cost, size, weight, and power requirements. Checkpointing protocols, which are necessary components of degrading systems, support task migration through state preservation. They allow real-time embedded systems to recover from any failure by restarting from the last well-defined and consistent state, thus preserving the progress of computations that have been achieved. This paper demonstrates and applies the graceful degradation concept to achieve fault tolerance in an unmanned aerial vehicle (UAV) real-time embedded system. A checkpointing protocol is used to reserve the state of the avionics of the UAV system. Faults were injected during run-time causing one of the system's stability critical control tasks to fail. The system was able successfully to recover by restarting the affected critical task(s) on a different processor with last valid consistent state(s). This paper presents the architecture, fault injection scheme, and the results of the tests performed, which demonstrate the viability of graceful degradation in our tested UAV.","PeriodicalId":352567,"journal":{"name":"2012 IEEE National Aerospace and Electronics Conference (NAECON)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125287611","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}
引用次数: 4
Non-contact THz probes for on-chip device and IC characterization 用于片上器件和IC表征的非接触式太赫兹探头
2012 IEEE National Aerospace and Electronics Conference (NAECON) Pub Date : 2012-07-25 DOI: 10.1109/NAECON.2012.6531023
G. Trichopoulos, K. Topalli, K. Sertel
{"title":"Non-contact THz probes for on-chip device and IC characterization","authors":"G. Trichopoulos, K. Topalli, K. Sertel","doi":"10.1109/NAECON.2012.6531023","DOIUrl":"https://doi.org/10.1109/NAECON.2012.6531023","url":null,"abstract":"We propose a contactless characterization approach for evaluating semiconductor devices and integrated circuits that operate in the THz regime (0.1-3 THz). The non-contact probe consists of on-chip receiving and transmitting THz antennas in a co-planar waveguide environment. Commercially available frequency extension modules with horn antennas are used in conjunction with microwave vector network analyzers to excite the proposed non-contact probe. A hemispherical lens couples the signals into device under test using the on-chip antennas. We discuss the calibration process and present the numerical evaluation of two non-contact probe schemes.","PeriodicalId":352567,"journal":{"name":"2012 IEEE National Aerospace and Electronics Conference (NAECON)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115339656","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}
引用次数: 1
Modeling and simulation of packaging substrate effects on radio frequency integrated circuits 封装基板对射频集成电路影响的建模与仿真
2012 IEEE National Aerospace and Electronics Conference (NAECON) Pub Date : 2012-07-25 DOI: 10.1109/NAECON.2012.6531048
C. Benedik, S. Ren
{"title":"Modeling and simulation of packaging substrate effects on radio frequency integrated circuits","authors":"C. Benedik, S. Ren","doi":"10.1109/NAECON.2012.6531048","DOIUrl":"https://doi.org/10.1109/NAECON.2012.6531048","url":null,"abstract":"In this paper an analysis of the effects of integrated circuit packaging substrates on a radio frequency (RF) IC is presented. At RF frequencies the effects of packaging parasitics become crucial when assembling an RF system in package (SiP) or integrating a single die with a package. A differential buffer, which had been previously fabricated in a 90nm CMOS process is used as a vehicle to analyze the effects of packaging on performance. The integration of the buffer die with the package is modeled and analyzed.","PeriodicalId":352567,"journal":{"name":"2012 IEEE National Aerospace and Electronics Conference (NAECON)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122778659","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}
引用次数: 0
Web-based geospatial information extraction 基于web的地理空间信息提取
2012 IEEE National Aerospace and Electronics Conference (NAECON) Pub Date : 2012-07-25 DOI: 10.1109/NAECON.2012.6531027
B. Kahler, K. C. Jones, B. Bacher
{"title":"Web-based geospatial information extraction","authors":"B. Kahler, K. C. Jones, B. Bacher","doi":"10.1109/NAECON.2012.6531027","DOIUrl":"https://doi.org/10.1109/NAECON.2012.6531027","url":null,"abstract":"The quantity of information publicly available on the World Wide Web today is enormous and continuously growing. Individual tools available for information retrieval and data mining are capable of extracting data based on search criteria but place a cognitive burden on the user to sift through the search results to find the information of interest. The dynamic nature of web-based information requires frequent searches to ensure that new information is not missed. Since public information is published on the web in many languages, translation into a common language is necessary to ensure that relevant data is not left out of a search. The authors discuss development of a programmatic method of collecting, analyzing and categorizing multi-lingual open source data. The discussed approach is designed to provide greater efficiency in public data searches and analysis by focusing on geospatial capabilities, visualizations, and the correlation of disparate pieces of information.","PeriodicalId":352567,"journal":{"name":"2012 IEEE National Aerospace and Electronics Conference (NAECON)","volume":"6 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114036452","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}
引用次数: 0
A brief taxonomy of intrusion detection strategies 入侵检测策略的简要分类
2012 IEEE National Aerospace and Electronics Conference (NAECON) Pub Date : 2012-07-25 DOI: 10.1109/NAECON.2012.6531064
H. Poston
{"title":"A brief taxonomy of intrusion detection strategies","authors":"H. Poston","doi":"10.1109/NAECON.2012.6531064","DOIUrl":"https://doi.org/10.1109/NAECON.2012.6531064","url":null,"abstract":"This paper provide a brief taxonomy and literature review regarding intrusion detection. It highlights the two main methods of classifying intrusion detection systems: network-based v. host-based and anomaly detection v. signature/misuse detection. An extensive bibliography is provided as a starting point for research in the field of intrusion detection.","PeriodicalId":352567,"journal":{"name":"2012 IEEE National Aerospace and Electronics Conference (NAECON)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123880588","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}
引用次数: 11
Wideband active matching of terahertz envelope detectors 太赫兹包络探测器的宽带主动匹配
2012 IEEE National Aerospace and Electronics Conference (NAECON) Pub Date : 2012-07-25 DOI: 10.1109/NAECON.2012.6531020
Y. Karisan, K. Sertel
{"title":"Wideband active matching of terahertz envelope detectors","authors":"Y. Karisan, K. Sertel","doi":"10.1109/NAECON.2012.6531020","DOIUrl":"https://doi.org/10.1109/NAECON.2012.6531020","url":null,"abstract":"Impedance matching of zero-bias millimeter-wave/THz diodes is examined in the context of THz communications receivers. Specifically, we present an active matching circuit that can realize Gb/s bandwidth performance for a 230GHz carrier frequency envelope detector. The active circuit consists of two transistor stages preceded by a 3rd order L/C matching network. Using a cascode stage followed by an emitter-follower, the baseband output impedance of THz diodes is matched to a standard 50Ω port of subsequent amplifier stage. Matched signal bandwidths as much as 1.2GHz can be achieved using this simple configuration. Examples demonstrate the performance and the benefits of the proposed active matching for high data rate THz receivers.","PeriodicalId":352567,"journal":{"name":"2012 IEEE National Aerospace and Electronics Conference (NAECON)","volume":"170 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116286339","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}
引用次数: 0
Save the Solider: Surgical Simulation (STS3) 拯救士兵:手术模拟(STS3)
2012 IEEE National Aerospace and Electronics Conference (NAECON) Pub Date : 2012-07-25 DOI: 10.1109/NAECON.2012.6531061
P. Chawla, S. Dong, L. Heironimus, T. Maschino, E. Straughter, L. Wunderlich, M. McCarthy, R. Williams
{"title":"Save the Solider: Surgical Simulation (STS3)","authors":"P. Chawla, S. Dong, L. Heironimus, T. Maschino, E. Straughter, L. Wunderlich, M. McCarthy, R. Williams","doi":"10.1109/NAECON.2012.6531061","DOIUrl":"https://doi.org/10.1109/NAECON.2012.6531061","url":null,"abstract":"The Air Force Research Lab Discovery Lab has facilitated the completion of this project. Improvements in combat equipment have protected the torso of the soldiers fighting overseas, but have left the head and extremities vulnerable. The problem is that the knowledge in the field of surgical training is not easily accessible. Thus, the purpose of this project was to develop an instructional module for lower extremity fasciotomy that would guide surgeons with limited trauma experience through tablet-based technologies. The project has created an application in which the art of the lower extremity fasciotomy procedure is demonstrated. The purpose of this paper is to describe the project in detail.","PeriodicalId":352567,"journal":{"name":"2012 IEEE National Aerospace and Electronics Conference (NAECON)","volume":"1153 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113988449","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}
引用次数: 0
Graphite-based material development for reconfigurable antennas 可重构天线的石墨基材料开发
2012 IEEE National Aerospace and Electronics Conference (NAECON) Pub Date : 2012-07-25 DOI: 10.1109/NAECON.2012.6531014
C. Devlin, R. H. Slater, E. Brown, F. L. Vogel, C. Bunker, K. A. S. Fernando, R. Ewing
{"title":"Graphite-based material development for reconfigurable antennas","authors":"C. Devlin, R. H. Slater, E. Brown, F. L. Vogel, C. Bunker, K. A. S. Fernando, R. Ewing","doi":"10.1109/NAECON.2012.6531014","DOIUrl":"https://doi.org/10.1109/NAECON.2012.6531014","url":null,"abstract":"New antenna material functionalities are required for reconfigurable antenna technologies. For these applications, RF circuit materials which are innately reconfigurable could provide increased functionality without added complexity. We have investigated two such materials: sulfuric acid-intercalated graphite, a tunable-impedance conductor; and a graphene oxide-metal nanoparticle composite, a semi-conductor with demonstrated negative differential resistance properties. This paper covers fabrication and characterization of devices using these materials, exploring their intrinsic tunability from DC to 40 GHz and their potential for application to reconfigurable RF technology.","PeriodicalId":352567,"journal":{"name":"2012 IEEE National Aerospace and Electronics Conference (NAECON)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128430725","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}
引用次数: 3
Broadband THz filters for THz sensing devices 太赫兹传感装置的宽带太赫兹滤波器
2012 IEEE National Aerospace and Electronics Conference (NAECON) Pub Date : 2012-07-25 DOI: 10.1109/NAECON.2012.6531025
V. Sanphuang, N. Nahar, J. Volakis
{"title":"Broadband THz filters for THz sensing devices","authors":"V. Sanphuang, N. Nahar, J. Volakis","doi":"10.1109/NAECON.2012.6531025","DOIUrl":"https://doi.org/10.1109/NAECON.2012.6531025","url":null,"abstract":"We propose a broadband filter using multi-layered frequency selective surfaces (FSS) for terahertz (THz) sensing devices. These types of filter windows are required to be placed in front of THz sensors to increase signal-to-noise ratio and reduce sensor sensitivity to mid IR and visible light. The FSS filter is simulated using polyethylene dielectric layers with fan shaped metal slots. Simulations show excellent flat band-pass response and a sharp out-of-band frequency response in 1-3 THz frequency range, centered at 1.95 THz. The -3 dB bandwidth achieved from this design is 1 THz (1.5THz-2.5THz).","PeriodicalId":352567,"journal":{"name":"2012 IEEE National Aerospace and Electronics Conference (NAECON)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129342031","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}
引用次数: 1
Global workspace theory inspired architecture for autonomous structural health monitoring 基于全局工作空间理论的自主结构健康监测体系结构
2012 IEEE National Aerospace and Electronics Conference (NAECON) Pub Date : 2012-07-25 DOI: 10.1109/NAECON.2012.6531054
M. Derriso, C. McCurry, M. DeSimio
{"title":"Global workspace theory inspired architecture for autonomous structural health monitoring","authors":"M. Derriso, C. McCurry, M. DeSimio","doi":"10.1109/NAECON.2012.6531054","DOIUrl":"https://doi.org/10.1109/NAECON.2012.6531054","url":null,"abstract":"Structural health monitoring (SHM) systems provide automated assessments of structural health by processing data from sensors fastened to a structure. Most SHM research is focused on developing quick state assessments (i.e., reflexive techniques) using a form of pattern recognition. However, little attention has been given to developing a more `thoughtful', logic-based method for state assessments to enable operational-level decisions. Reflexive-based assessments are unreliable because they often cannot discriminate between changes due to structural damage and other variants (e.g., temperature). A new architecture is being proposed that combines reflexive and deliberative elements for enhanced state assessments and operational decisions. The architecture is demonstrated in the laboratory using a representative airframe component.","PeriodicalId":352567,"journal":{"name":"2012 IEEE National Aerospace and Electronics Conference (NAECON)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130727724","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}
引用次数: 7
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