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Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993最新文献

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The DESC field failure evaluation program "a cradle to grave approach" DESC现场故障评估项目“从摇篮到坟墓的方法”
Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993 Pub Date : 1993-08-01 DOI: 10.1109/62.248330
B.A. Lantz, B.P. McNicholl
{"title":"The DESC field failure evaluation program \"a cradle to grave approach\"","authors":"B.A. Lantz, B.P. McNicholl","doi":"10.1109/62.248330","DOIUrl":"https://doi.org/10.1109/62.248330","url":null,"abstract":"This paper describes the Defense Electronics Supply Center's field failure evaluation program and the results achieved. The primary objective of the program is to take positive corrective action steps to assure that quality electronics parts are used in DoD weapon systems. The corrective action steps start with the validation of field failures through lab testing. Lab testing is vital in developing quantitative data and determining whether a failure is user induced or supplier related. This can be accomplished with a full compliment of testing capabilities which include electrical, physical and environmental analysis. The process flow of field failures is described from their inception to final corrective action. To illustrate this, four case studies are presented in which Lab testing and coordination with the supplier has resulted in positive corrective action thus improving the quality and reliability of the electronic components in DoD Weapon Systems.<<ETX>>","PeriodicalId":183796,"journal":{"name":"Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993","volume":"50 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133864386","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 new algorithm for signal classification using phase information 一种基于相位信息的信号分类新算法
Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993 Pub Date : 1993-07-01 DOI: 10.1109/NAECON.1993.290936
R. Inkol, R. Saper
{"title":"A new algorithm for signal classification using phase information","authors":"R. Inkol, R. Saper","doi":"10.1109/NAECON.1993.290936","DOIUrl":"https://doi.org/10.1109/NAECON.1993.290936","url":null,"abstract":"An algorithm for the classification of pulsed signals having a phase or frequency modulated carrier is presented. It is shown that relatively small differences in the modulation of a pair of signals can be detected and accurate measurements of the carrier frequency offset obtained.<<ETX>>","PeriodicalId":183796,"journal":{"name":"Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114940936","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
Monitoring techniques for RISC embedded systems RISC嵌入式系统的监控技术
Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993 Pub Date : 1993-05-24 DOI: 10.1109/NAECON.1993.290970
K. Jundi, D. Moon
{"title":"Monitoring techniques for RISC embedded systems","authors":"K. Jundi, D. Moon","doi":"10.1109/NAECON.1993.290970","DOIUrl":"https://doi.org/10.1109/NAECON.1993.290970","url":null,"abstract":"As embedded computer systems become more advanced and more complex, monitoring the performance of microprocessors incorporated into those systems also become more difficult. Most of the embedded computer systems are real-time systems where a microprocessor is monitored or controlled. Some of the features that characterize RISC processors are the use of complex data paths through pipelining and higher clock rates. Such features have put stringent requirement on today's monitoring techniques. This paper presents an overview of many of today's monitoring techniques used for monitoring and debugging program running on a target processor. This overview is focused on the advantages and disadvantages of those techniques when used with RISC-based processors.<<ETX>>","PeriodicalId":183796,"journal":{"name":"Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115658788","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
An efficient obstacle avoidance scheme in mobile robot path planning using polynomial neural networks 基于多项式神经网络的移动机器人路径规划中的高效避障方案
Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993 Pub Date : 1993-05-24 DOI: 10.1109/NAECON.1993.290832
F. Ahmed, C. Chen
{"title":"An efficient obstacle avoidance scheme in mobile robot path planning using polynomial neural networks","authors":"F. Ahmed, C. Chen","doi":"10.1109/NAECON.1993.290832","DOIUrl":"https://doi.org/10.1109/NAECON.1993.290832","url":null,"abstract":"Application of Polynomial Neural Networks (PNN) in mobile robot path planning with an obstacle avoidance scheme is proposed. Given an environment and a desired goal location (position and orientation), PNN's are built from some selected starting locations to reach this goal. These PNNs comprise the memory of our model. An efficient associative retrieval technique is then applied to make the robot follow a minimal cost polynomial path. In the movement, when it faces an obstacle, the robot uses a contour finding algorithm to get away from the obstacle. The major advantage of using the PNNs is its interpolating capability with a moderate size of data space. Also no preprocessing of the range data is necessary.<<ETX>>","PeriodicalId":183796,"journal":{"name":"Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125810467","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 least square algorithm with covariance weighting for computing the translational and rotational errors between two radar sites 基于协方差加权的最小二乘算法计算两雷达站间的平移和旋转误差
Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993 Pub Date : 1993-05-24 DOI: 10.1109/NAECON.1993.290945
J. J. Sudano
{"title":"A least square algorithm with covariance weighting for computing the translational and rotational errors between two radar sites","authors":"J. J. Sudano","doi":"10.1109/NAECON.1993.290945","DOIUrl":"https://doi.org/10.1109/NAECON.1993.290945","url":null,"abstract":"Sharing of radar track data between sites greatly enhances the radar coverage at very little cost in assets. By linking all the radars in a battlefield or a task force, a complete picture can be realized that supports faster response time and is robust against jamming, ECM, and DECM. In order for these benefits to be realized a good algorithm must transform tracks between sites without introducing large errors. This article describes a novel least square algorithm with covariance weighting (LSC) for computing translational and rotational (gridlock) errors between two radar sites that share common tracks. Simulations show that this technique reduces the gridlock errors by a factor of six over least squares algorithms with no covariance weighting.<<ETX>>","PeriodicalId":183796,"journal":{"name":"Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126131750","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
Acquisition of noise-free and noisy signal: effect of different staring focal-plane-array pixel geometry 无噪声和有噪声信号的获取:不同凝视焦平面阵列像素几何形状的影响
Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993 Pub Date : 1993-05-24 DOI: 10.1109/NAECON.1993.290781
K. Iftekharuddin, M. A. Karim
{"title":"Acquisition of noise-free and noisy signal: effect of different staring focal-plane-array pixel geometry","authors":"K. Iftekharuddin, M. A. Karim","doi":"10.1109/NAECON.1993.290781","DOIUrl":"https://doi.org/10.1109/NAECON.1993.290781","url":null,"abstract":"Spatial averaging technique has been used to compare the signal acquisition performance of hexagonally sampled arrays with rectangular, hexagonal and rhombic pixel shapes of equivalent area. In noise-free case, a modulation transfer function (MTF) value, which is almost similar to the MTF of the rectangular pixel shape, is obtained for the rhombic pixel shape. However, in detecting noisy signal, the probability density function (pdf) of the detected signal of the rhombic pixel geometry lies in between that of the other two pixel shapes.<<ETX>>","PeriodicalId":183796,"journal":{"name":"Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993","volume":"292 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115217608","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
Membership function generator circuit for a fuzzy logic controller 模糊逻辑控制器的隶属函数产生电路
Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993 Pub Date : 1993-05-24 DOI: 10.1109/NAECON.1993.290891
M. Shetty-Wagoner, K. Rattan, R. Siferd
{"title":"Membership function generator circuit for a fuzzy logic controller","authors":"M. Shetty-Wagoner, K. Rattan, R. Siferd","doi":"10.1109/NAECON.1993.290891","DOIUrl":"https://doi.org/10.1109/NAECON.1993.290891","url":null,"abstract":"A CMOS integrated circuit implementation of a membership function for a fuzzy controller is presented in this paper. The design is based on analog circuits. This circuit accepts analog inputs in real time, invokes a triangular membership function and produces an analog output appropriate to the degree of membership of the input. The analog design results in a circuit which is very efficient in terms of transistor count and chip area. Each rule for error or change of error can be programmed individually in the rule generator. The slope of the membership function and the value of the peak voltage can be altered. The membership function circuit can utilize fuzzy linguistic information in the form of NL (negative large), NM (negative medium), NS (negative small), ZR (zero), PS (positive small), PM (positive medium), PL (positive large).<<ETX>>","PeriodicalId":183796,"journal":{"name":"Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122401877","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
The implementation of asynchronous entry calls on two different architectures 异步入口调用在两个不同架构上的实现
Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993 Pub Date : 1993-05-24 DOI: 10.1109/NAECON.1993.290961
A. Fergany, L. Szewerenko, M. Rabinowitz, E. Solomon, M. Pitarys, C. L. Benjamin
{"title":"The implementation of asynchronous entry calls on two different architectures","authors":"A. Fergany, L. Szewerenko, M. Rabinowitz, E. Solomon, M. Pitarys, C. L. Benjamin","doi":"10.1109/NAECON.1993.290961","DOIUrl":"https://doi.org/10.1109/NAECON.1993.290961","url":null,"abstract":"Ada is required by the United States Air Force (USAF) for programming weapon system software. Each software development effort relies on an Ada Runtime System (RTS). The Common Ada Runtime System (CARTS) is composed of several Ada packages which are designed to furnish a standard interface between an Ada compiler and an Ada runtime system. CARTS also includes some packages which may be used directly by an application. This paper discusses implementations of the CARTS Asynchronous Calls package. In particular, it focuses on the components of the interface which have target specific properties, and it provides an analysis of the target and software costs for the asynchronous calls support. The cost associated with such support is represented by any overhead which must be accounted for in the application.<<ETX>>","PeriodicalId":183796,"journal":{"name":"Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993","volume":"135 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114496754","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
GPS positioning, filtering, and integration GPS定位，滤波和集成
Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993 Pub Date : 1993-05-24 DOI: 10.1109/NAECON.1993.290937
J. Chaffee, J. Abel, B.K. McQuiston
{"title":"GPS positioning, filtering, and integration","authors":"J. Chaffee, J. Abel, B.K. McQuiston","doi":"10.1109/NAECON.1993.290937","DOIUrl":"https://doi.org/10.1109/NAECON.1993.290937","url":null,"abstract":"This paper explores the possibility of improving navigation solutions and easing integration requirements by using non-linear filters based on direct solutions-to the GPS equations. An alternative approach to navigation with GPS and integration of GPS with other sensor systems is discussed. This two-stage method is based on the use of statistical point estimation. After discussing the underlying concept of two-stage estimation, problems encountered in the statistics of point estimation of position and bias from GPS solutions are surveyed. This is followed by a presentation of a closed form maximum likelihood estimator for position and bias based on the assumption of Gaussian errors. To the authors' knowledge, this MLE algorithm has not previously been published. Applications to the integration of the GPS with the INS are presented.<<ETX>>","PeriodicalId":183796,"journal":{"name":"Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114608369","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
CASE from the engineers point of view 从工程师的角度来看
Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993 Pub Date : 1993-05-24 DOI: 10.1109/NAECON.1993.290965
C.E. Altick, C. Satterthwaite
{"title":"CASE from the engineers point of view","authors":"C.E. Altick, C. Satterthwaite","doi":"10.1109/NAECON.1993.290965","DOIUrl":"https://doi.org/10.1109/NAECON.1993.290965","url":null,"abstract":"Software engineering design methodologies must be followed when designing large and small computer systems software. CASE technologies provide a common interface between the designers and reviewers, thus allowing a greater understanding of the design at all phases. The benefits of CASE technologies include well documented and traceable designs, automation of software engineering processes throughout life cycle support, and substantial improvements in reengineering opportunities. The costs of CASE technologies include investment in both time and money to obtain the necessary training and tools.<<ETX>>","PeriodicalId":183796,"journal":{"name":"Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128961011","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
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