2005 IEEE Aerospace Conference最新文献_第5页

Carbon Nanotube Memories and Fabrics in a Radiation Hard Semiconductor Foundry 辐射硬半导体晶圆厂的碳奈米管记忆体与结构

2005 IEEE Aerospace Conference Pub Date : 2005-03-05 DOI: 10.1109/AERO.2005.1559547

D. K. Brock, J. Ward, B. Segal, T. Rueckes, M. Lovellette, M. Polavarapu, T. Mclntyre, S. Danziger

{"title":"Carbon Nanotube Memories and Fabrics in a Radiation Hard Semiconductor Foundry","authors":"D. K. Brock, J. Ward, B. Segal, T. Rueckes, M. Lovellette, M. Polavarapu, T. Mclntyre, S. Danziger","doi":"10.1109/AERO.2005.1559547","DOIUrl":"https://doi.org/10.1109/AERO.2005.1559547","url":null,"abstract":"This paper details the results of a project to transition Nantero's laboratory carbon nanotube (CNT) process technology into the BAE Systems radiation-hard CMOS production foundry to enable the development of novel nanotechnology-based solutions for government space applications. Working jointly, BAE Systems and Nantero have successfully developed the necessary processes, recipes, and protocols to enable BAE Systems to develop rad-hard CMOS-CNT hybrid devices and circuits. The success of this project has established the BAE Systems Manassas, VA facility as the first U.S. government sponsored foundry to qualify carbon nanotubes for use within a production fab line. The project addressed all aspects needed to qualify nanotubes and comprised three main steps: 1) development of recipes for coating a 150 mm wafer with a monolayer fabric of single-walled nanotubes (SWNTs), 2) edge-bead removal (EBR) of the CNTs from around the edge, bevel, and backside of the wafer to prevent contamination of further processing equipment, 3) demonstration of repeatable coating and EBR of the CNTs between various wafers over multiple lots. The fabrication process for creating a 1-2 nm thick monolayer fabric of SWNTs is described and characterized with respect to the fabric thickness, resistivity, elemental composition, particle count and uniformity","PeriodicalId":117223,"journal":{"name":"2005 IEEE Aerospace Conference","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133961828","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: 5

An alternative approach to multichannel radar detection and location 一种多通道雷达探测和定位的替代方法

2005 IEEE Aerospace Conference Pub Date : 2005-03-05 DOI: 10.1109/AERO.2005.1559514

H. Mendelson

{"title":"An alternative approach to multichannel radar detection and location","authors":"H. Mendelson","doi":"10.1109/AERO.2005.1559514","DOIUrl":"https://doi.org/10.1109/AERO.2005.1559514","url":null,"abstract":"Space based radar (SBR) surveillance concepts have been investigated for decades and have once again made an appearance as a viable means of performing the ground moving target indication (GMTI) mission. From the signal processing perspective, a number of unique technical challenges must be addressed. These include a larger Doppler clutter spread, which will cause moving targets to be more likely in the endoclutter region, larger target densities, and nonhomogeneity and/or nonstationarity of the collected data. These and other phenomenology impact the ability of algorithms implemented by the system to perform target detection and parameter estimation. Various adaptations of space-time adaptive processing (STAP) have been put forward as the primary, if not only, solution to detect and locate ground moving targets (GMTI) in complex clutter environments from airborne and/or space based radar platforms. Most, if not all, of the proposed variations can be optimized to work in specific environments but suffer degradation when called upon to perform in a different setting. The reason for this appears to be inherent to the process itself. In order to overcome the difficulties described above, an alternative approach to the current STAP paradigm has been developed and studied for target detection and location in multichannel radar systems. The new technique is based on an adaptation of a previously developed technique, used in passive arrays for angle of arrival (AOA) estimation, in conjunction with a knowledge based array calibration technique. When combined together, these two algorithms provide a powerful new tool for the detection and location of moving targets in complex clutter environments","PeriodicalId":117223,"journal":{"name":"2005 IEEE Aerospace Conference","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128922719","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

Coherently coupled photonic crystal vertical cavity lasers for communication applications 用于通信的相干耦合光子晶体垂直腔激光器

2005 IEEE Aerospace Conference Pub Date : 2005-03-05 DOI: 10.1109/AERO.2005.1559489

K.D. Choquctte, J.J. Raflery, A. Danner, P. Leisher

引用次数: 2

Mass Data Recorder with Ultra-High-Density Stacked Memory for Spacecraft 航天器用超高密度堆叠存储器海量数据记录仪

2005 IEEE Aerospace Conference Pub Date : 2005-03-05 DOI: 10.1109/AERO.2005.1559545

T. Sasada, S. Ichikawa, M. Shirakura

引用次数: 1

Dim-star Tracking for Stellar Interferometry 恒星干涉测量中的暗星跟踪

2005 IEEE Aerospace Conference Pub Date : 2005-03-05 DOI: 10.1109/AERO.2005.1559525

G. Sun, O. Alvarez-Salazar, A. Azizi, J. Fischer

引用次数: 3

Off-line tools for improved operational software management 用于改进操作软件管理的离线工具

2005 IEEE Aerospace Conference Pub Date : 2005-03-05 DOI: 10.1109/AERO.2005.1559712

M. Molina-Cobos, G. Garcia, T. Beech

引用次数: 0

FUMS/spl trade/ fusion for improved aircraft MAAAP FUMS/spl贸易/融合改进飞机MAAAP

2005 IEEE Aerospace Conference Pub Date : 2005-03-05 DOI: 10.1109/AERO.2005.1559685

H. Azzam, P. Knight, J. Cook, N. Wakefield

引用次数: 5

Tuning of MEMS devices using Evolutionary Computation and Open-Loop Frequency Response 基于进化计算和开环频率响应的MEMS器件调谐

2005 IEEE Aerospace Conference Pub Date : 2005-03-05 DOI: 10.1109/AERO.2005.1559562

D. Keymeulen, Wolfgang Fink, M. I. Ferguson, C. Peay, R. Terrile, K. Yee

引用次数: 19

Forecasting dose for large solar energetic particle events: is there time to predict? 预测大型太阳高能粒子事件的剂量:有时间预测吗?

2005 IEEE Aerospace Conference Pub Date : 2005-03-05 DOI: 10.1109/AERO.2005.1559361

J. Neal, T. Nichols, L. Townsend

{"title":"Forecasting dose for large solar energetic particle events: is there time to predict?","authors":"J. Neal, T. Nichols, L. Townsend","doi":"10.1109/AERO.2005.1559361","DOIUrl":"https://doi.org/10.1109/AERO.2005.1559361","url":null,"abstract":"Predicting large solar energetic particle (SEP) events before onset at the Sun is beyond our current forecasting capability. There is, however, a high correlation between large SEP events and fast, coronal mass ejections (CMEs). Event-triggered forecasting methodologies can utilize (1) solar observables such as CME speed, width, or longitude prior to particle arrival at a monitoring spacecraft and/or (2) arriving particle properties such as intensity or energy spectra. It has been proposed that proton intensities on the stream-limited plateau present a minimal radiation hazard to astronauts, and hazardous intensities can occur upon CME-driven shock arrival at the spacecraft. It then follows, that forecasts need only predict the arrival time and severity of the shock prior to its arrival at the spacecraft. Ongoing efforts seek to predict the time of arrival and particle flux magnitude of shocks in order to provide a one hour warning of shock impact at Earth. In order to evaluate the correctness of this proposal, we evaluate five large events for imparted dose prior to and after shock arrival. We also discuss the implications of our results for event-triggered methodologies.","PeriodicalId":117223,"journal":{"name":"2005 IEEE Aerospace Conference","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114568244","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: 2

A Hybrid Framework of Worst-Case Execution Time Analysis for Real-Time Embedded System Software 实时嵌入式系统软件最坏情况执行时间分析的混合框架

2005 IEEE Aerospace Conference Pub Date : 2005-03-05 DOI: 10.1109/AERO.2005.1559632

Jong-In Lee, Su-Hyun Park, Hojung Bang, T. Kim, S. Cha

{"title":"A Hybrid Framework of Worst-Case Execution Time Analysis for Real-Time Embedded System Software","authors":"Jong-In Lee, Su-Hyun Park, Hojung Bang, T. Kim, S. Cha","doi":"10.1109/AERO.2005.1559632","DOIUrl":"https://doi.org/10.1109/AERO.2005.1559632","url":null,"abstract":"Timing analysis is an essential process for development of real-time embedded system and knowledge about the worst-case execution time (WCET) of real-time programs is critical to validation of temporal correctness of implemented system. Recently, automated static timing analysis methods are introduced to facilitate timing analysis process for real-time software, and to provide safe and tight WCET. But static WCET analysis methods have drawback as they do not provide accurate WCET for hardware-dependent software or application software where input data rate from external environment needs to be considered. Also, the WCET obtained from static WCET analysis needs to be verified at target system before system deployment. In this paper, we propose a framework of WCET analysis for real-time embedded software which complements static WCET approach and provides tight and safe WCET by combining static timing analysis approach with dynamic measurement. The application of proposed framework to the WCET analysis of command processing and data acquisition part of KOMPSAT-2 satellite flight software is presented to show effectiveness of the proposed approach","PeriodicalId":117223,"journal":{"name":"2005 IEEE Aerospace Conference","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114881335","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: 16