Proceedings of the IEEE 1998 National Aerospace and Electronics Conference. NAECON 1998. Celebrating 50 Years (Cat. No.98CH36185)最新文献_第7页

An Air Force collaborative enterprise environment 空军协作企业环境

Proceedings of the IEEE 1998 National Aerospace and Electronics Conference. NAECON 1998. Celebrating 50 Years (Cat. No.98CH36185) Pub Date : 1998-07-13 DOI: 10.1109/NAECON.1998.710131

G. Tolometti, V. Sannders

{"title":"An Air Force collaborative enterprise environment","authors":"G. Tolometti, V. Sannders","doi":"10.1109/NAECON.1998.710131","DOIUrl":"https://doi.org/10.1109/NAECON.1998.710131","url":null,"abstract":"A collaborative enterprise environment is an application of advanced distributed simulation and information technology in an integrated environment to support technology development, system design, performance, cost, and producibility trade-off analyses throughout the entire product and system engineering life cycle. The Sensors and Information Directorates, Air Force Research Laboratory (AFRL) have initiated a major effort to implement a Collaborative Environment (CE) to provide the framework and development methodology required for affordable and timely technology for the 21/sup st/ Century warfighter. This paper discusses AFRL's efforts to support the new Air Force vision and to maximize its internal business processes through enterprise-wide cooperation. The paper discusses the need for a CE as a result of Acquisition Reform and Simulation-based Acquisition; describes CE and how the framework supports enterprise-wide collaboration of multidisciplinary expertise; and describes a CE technical architecture and the new technologies that distinguish it from conventional distributed processing systems.","PeriodicalId":202280,"journal":{"name":"Proceedings of the IEEE 1998 National Aerospace and Electronics Conference. NAECON 1998. Celebrating 50 Years (Cat. No.98CH36185)","volume":"49 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120993133","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

Dielectric characterization of microwave assisted chemically vapor deposited diamond 微波辅助化学气相沉积金刚石的介电特性

Proceedings of the IEEE 1998 National Aerospace and Electronics Conference. NAECON 1998. Celebrating 50 Years (Cat. No.98CH36185) Pub Date : 1998-07-13 DOI: 10.1109/NAECON.1998.710124

S. Heidger, S. Fries-Carr, J. Weimer, B. Jordan, R. Wu

{"title":"Dielectric characterization of microwave assisted chemically vapor deposited diamond","authors":"S. Heidger, S. Fries-Carr, J. Weimer, B. Jordan, R. Wu","doi":"10.1109/NAECON.1998.710124","DOIUrl":"https://doi.org/10.1109/NAECON.1998.710124","url":null,"abstract":"Freestanding polycrystalline diamond films produced by Microwave Plasma Chemical Vapor Deposition (MWCVD) were investigated for high power and high temperature electronic applications. The diamond films were deposited on polished tungsten substrates using 5000 W to I500 W power, 15.33 kPa pressure, methane-hydrogen-oxygen precursor gas between 0.5% CH/sub 4/ and 95% CH/sub 4/, oxygen/carbon ratio between 0 and 0.33, and temperature from 600/spl deg/C to 900/spl deg/C. The diamond film parted from the substrate as the samples cooled after deposition due to the difference in the thermal expansion coefficients of diamond and tungsten. Cohesive freestanding films of randomly oriented polycrystalline diamond were obtained ranging from 10 /spl mu/m to 150 /spl mu/m thick Either aluminum or tungsten metal contacts were deposited on the diamond to form parallel plate capacitors. Electrical measurements were performed before and after annealing. The dielectric constant and the loss tangent at temperatures from 23/spl deg/C to 300/spl deg/C were determined from capacitance measurements over a 20 Hz to 1 MHz frequency range. The effect of methane concentration, oxygen concentration, deposition temperature and annealing on the frequency and temperature stability of the dielectric properties of CVD diamond capacitors was investigated. Dielectric constants ranging between 8.0 and 4.2 and resistivities between 1/spl times/10/sup 8/ ohm-cm and 5/spl times/10/sup 14/ ohm-cm were obtained for the diamond samples.","PeriodicalId":202280,"journal":{"name":"Proceedings of the IEEE 1998 National Aerospace and Electronics Conference. NAECON 1998. Celebrating 50 Years (Cat. No.98CH36185)","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124703636","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

Target recognition based on characteristic polarizations, in the optics region 在光学领域，基于特征偏振的目标识别

Proceedings of the IEEE 1998 National Aerospace and Electronics Conference. NAECON 1998. Celebrating 50 Years (Cat. No.98CH36185) Pub Date : 1998-07-13 DOI: 10.1109/NAECON.1998.710149

Tao Huamin, Zhang Zhiqun

引用次数: 2

Rapid retargeting a solution to electronic systems obsolescence 快速重新定位电子系统过时的解决方案

Proceedings of the IEEE 1998 National Aerospace and Electronics Conference. NAECON 1998. Celebrating 50 Years (Cat. No.98CH36185) Pub Date : 1998-07-13 DOI: 10.1109/NAECON.1998.710112

G. Fitzhugh

{"title":"Rapid retargeting a solution to electronic systems obsolescence","authors":"G. Fitzhugh","doi":"10.1109/NAECON.1998.710112","DOIUrl":"https://doi.org/10.1109/NAECON.1998.710112","url":null,"abstract":"In 1993, the Office of Naval Research (ONR), in conjunction with the Undersecretary of the Navy for Research, Development, and Acquisition established a program known as Technology for Affordability. That program is executed today in many of the Navy's weapon systems procurements and is specifically resident in two ONR programs: Manufacturing Technology and Small Business Innovation Research (SBIR). The technology discussed in this paper was developed under the auspices of the SBIR program and is known as Rapid Retargeting. It is executed through VisiCom Laboratories, Inc., a California-based small business. Rapid Retargeting rehosts existing logic into new hardware technology. This rehosting process begins by extracting the functionality of the target hardware and capturing it in VHSIC Hardware Descriptive Language (VHDL). The resulting software models are simulated and compared with the original hardware for verification. Once verified the models are ported to a new hardware design. Subsequently, parts obsolescence is no longer an issue: software models can be rehosted whenever new technology becomes available.","PeriodicalId":202280,"journal":{"name":"Proceedings of the IEEE 1998 National Aerospace and Electronics Conference. NAECON 1998. Celebrating 50 Years (Cat. No.98CH36185)","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132370851","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: 6

In-flight replanning of penetration routes to avoid threat zones of circular shapes 在飞行中重新规划穿透路线以避开圆形威胁区域

Proceedings of the IEEE 1998 National Aerospace and Electronics Conference. NAECON 1998. Celebrating 50 Years (Cat. No.98CH36185) Pub Date : 1998-07-13 DOI: 10.1109/NAECON.1998.710140

S.J. Asseo

{"title":"In-flight replanning of penetration routes to avoid threat zones of circular shapes","authors":"S.J. Asseo","doi":"10.1109/NAECON.1998.710140","DOIUrl":"https://doi.org/10.1109/NAECON.1998.710140","url":null,"abstract":"In-flight replanning of a strike mission requires the capability of generating survivable penetration routes, quickly and efficiently, with limited computer resources on board the aircraft. Although dynamic programming (DP) has been used traditionally for route generation, it requires quantization of the state space into cells of specified dimensions, and places restrictions on the route to traverse the state space from cell center to cell center along one of the prescribed headings. The algorithm developed avoids threat zones of circular shapes, and is ideal for in-flight replanning of penetration routes. The algorithm is much faster than DP, it generates flyable routes that do not require smoothing, and the run time depends strictly on the number of threats to be avoided, rather than on cell size used for state space quantization. The algorithm uses geometric construction to synthesize routes with linear segments tangent to the threat periphery and circular segments along the threat periphery, and obtains the shortest route between a starting point and a destination point, by using the principle of optimality. The algorithm is validated in a high density threat environment with overlapping threat lethality envelopes of varying sizes, and used to generate various penetration routes.","PeriodicalId":202280,"journal":{"name":"Proceedings of the IEEE 1998 National Aerospace and Electronics Conference. NAECON 1998. Celebrating 50 Years (Cat. No.98CH36185)","volume":"205 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131768195","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: 14

Aided and unaided operator performance with synthetic aperture radar imagery 合成孔径雷达图像的辅助和非辅助操作性能

Proceedings of the IEEE 1998 National Aerospace and Electronics Conference. NAECON 1998. Celebrating 50 Years (Cat. No.98CH36185) Pub Date : 1998-07-13 DOI: 10.1109/NAECON.1998.710145

J. See, I. Davis, G. Kuperman

引用次数: 2

COTS fibre channel network technology insertion into avionics systems COTS光纤通道网络技术插入航空电子系统

Proceedings of the IEEE 1998 National Aerospace and Electronics Conference. NAECON 1998. Celebrating 50 Years (Cat. No.98CH36185) Pub Date : 1998-07-13 DOI: 10.1109/NAECON.1998.710106

T. Gaska

引用次数: 2

Evaluating thermal and image intensification night vision devices for the ground environment: human factors and usability issues 评估用于地面环境的热和图像增强夜视设备:人为因素和可用性问题

Proceedings of the IEEE 1998 National Aerospace and Electronics Conference. NAECON 1998. Celebrating 50 Years (Cat. No.98CH36185) Pub Date : 1998-07-13 DOI: 10.1109/NAECON.1998.710130

P. Best, D. Collins, D. Piccione, D. Ferrett

引用次数: 5

A direct sequence baseband communications system using programmable logic devices 使用可编程逻辑器件的直接序列基带通信系统

Proceedings of the IEEE 1998 National Aerospace and Electronics Conference. NAECON 1998. Celebrating 50 Years (Cat. No.98CH36185) Pub Date : 1998-07-13 DOI: 10.1109/NAECON.1998.710109

D.W. Brayman, G. Al-Salechi, F. Scarpino

{"title":"A direct sequence baseband communications system using programmable logic devices","authors":"D.W. Brayman, G. Al-Salechi, F. Scarpino","doi":"10.1109/NAECON.1998.710109","DOIUrl":"https://doi.org/10.1109/NAECON.1998.710109","url":null,"abstract":"As digital systems grow rapidly in complexity and sophistication, the educational process must provide future developers with experience that incorporates advanced development tools and modem design techniques. However, this cannot be achieved at the expense of relevant theory and traditional design methods on which modem methods are based. Hence, the learning experience must efficiently combine emphasis on classical design principles with an exposure to state-of-the-art tools and techniques. This student project demonstrates the use of hardware description language design with programmable logic devices to develop a digital system of significant complexity, while introducing the basic principles of spread spectrum communications. After 20 years, this latter technology still remains a modern digital approach to reliable communications, and provides a practical and challenging educational application. This paper summarizes the design and full system hardware implementation of a baseband digital direct sequence spread spectrum communication system for classroom demonstration. The system configuration includes a serial transmitter with pseudorandom spreading routine, a receiver with despreader, and other diagnostic equipment.","PeriodicalId":202280,"journal":{"name":"Proceedings of the IEEE 1998 National Aerospace and Electronics Conference. NAECON 1998. Celebrating 50 Years (Cat. No.98CH36185)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128719762","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

The advanced intermediate representation with extensibility/common environment (AIRE/CE) 具有可扩展性/公共环境的高级中间表示(AIRE/CE)

Proceedings of the IEEE 1998 National Aerospace and Electronics Conference. NAECON 1998. Celebrating 50 Years (Cat. No.98CH36185) Pub Date : 1998-07-13 DOI: 10.1109/NAECON.1998.710202

J. Willis, G. D. Peterson, S. Gregor

引用次数: 15