{"title":"REE: a COTS-based fault tolerant parallel processing supercomputer for spacecraft onboard scientific data analysis","authors":"R. Some, D. Ngo","doi":"10.1109/DASC.1999.821991","DOIUrl":"https://doi.org/10.1109/DASC.1999.821991","url":null,"abstract":"NASA's future spaceborne science missions will require supercomputing capabilities for both near earth and deep space exploration. Limited downlink bandwidth and excessive round trip communication delays limit the capabilities and science value of missions which rely on terrestrial supercomputing resources. The difficulty encountered is that radiation-hardened components are both extremely expensive and lag several generations behind the commercial state of the art. The goal of the Remote Exploration and Experimentation (REE) project, part of NASA's HPCC program, is to migrate ground-based commercial supercomputing technology into space in a timely and cost-effective manner. Reaching this goal will enable new classes of science missions and make feasible the next major thrust in space exploration. The approach being taken on the REE project is to exploit a comprehensive architecture strategy to enable direct insertion of the prevailing generation of state of the art commercial (hardware/software) components in future space systems. The use of state of the art commercial hardware, coupled with a software-based fault tolerance strategy will allow high throughput computation even in the presence of relatively high rates of radiation-induced transient upsets as well as in the presence of permanent faults. The authors outline the overall project plan and status, and review the architecture of the First Generation Testbed.","PeriodicalId":269139,"journal":{"name":"Gateway to the New Millennium. 18th Digital Avionics Systems Conference. Proceedings (Cat. No.99CH37033)","volume":"43 13","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131471569","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}
{"title":"Head-up display symbology for ground collision avoidance","authors":"G. Billingsley, J. Kuchar, S. W. Jacobson","doi":"10.1109/DASC.1999.863732","DOIUrl":"https://doi.org/10.1109/DASC.1999.863732","url":null,"abstract":"Four ground collision avoidance displays were tested using a fixed-base T-38 simulator with a projection screen and simulated head-up display (HUD). When given a standard Break-X, pilots were able to spend only 40% of the flight time between desired altitudes and crashed in 20% of the runs. Horizontally- and vertically-moving chevron symbols allowed 70% and 80% of the flight time to be spent at the desired altitude respectively and resulted in a crash in 8% of the runs. A preview depiction using a perspective elevated surface at the desired altitude was the best display for the task investigated, allowing 90% of the time to be spent at the desired altitude with a crash rate of 2%.","PeriodicalId":269139,"journal":{"name":"Gateway to the New Millennium. 18th Digital Avionics Systems Conference. Proceedings (Cat. No.99CH37033)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127820307","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}
{"title":"Design and implementation of a general-purpose processor for space systems","authors":"J. Perschy","doi":"10.1109/DASC.1999.821998","DOIUrl":"https://doi.org/10.1109/DASC.1999.821998","url":null,"abstract":"The requirements for this processor were established using the experience of the hardware and software designers in the APL Space Department. The use of commercial hardware and software products, combined with an error- and fault-tolerant architecture, resulted in a low-cost design without adversely affecting overall reliability. The processor's architecture and mechanical design, and hardware and software test and validation methods are described.","PeriodicalId":269139,"journal":{"name":"Gateway to the New Millennium. 18th Digital Avionics Systems Conference. Proceedings (Cat. No.99CH37033)","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115828335","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}
{"title":"More economical avionics development-is there a better way?","authors":"T. Ferrell, U. D. Ferrell","doi":"10.1109/DASC.1999.863697","DOIUrl":"https://doi.org/10.1109/DASC.1999.863697","url":null,"abstract":"Today's avionics projects are regulated by many rules in an effort to increase safety. As technology marches forward, civil aviation typically lags a step behind to assure that full consideration is given to safety critical aspects of the new technology. Other industries, including those regulated by the Nuclear Regulatory Commission (NRC) and the Food and Drug Administration (FDA) are often more progressive in adopting such technology. Unfortunately, there are no official guidelines for using and transferring the knowledge already being employed in other industries to the aviation industry. In some cases, the civil aviation industry misses opportunities by not adopting commercial best practices from other industry sectors. Broadening our horizon to take advantage of work done by other industry sectors could be a major step in economically keeping up with new technology. This paper provides a overview of software and system development standards and approval practices from a variety of industry sectors for the purposes of highlighting alternative approaches.","PeriodicalId":269139,"journal":{"name":"Gateway to the New Millennium. 18th Digital Avionics Systems Conference. Proceedings (Cat. No.99CH37033)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127478688","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}
P. Massimini, J. Dieudonne, L. Monticone, D. Lamiano, E. A. Brestle
{"title":"Insertion of controller-pilot data link communications into the national airspace system: is it more efficient?","authors":"P. Massimini, J. Dieudonne, L. Monticone, D. Lamiano, E. A. Brestle","doi":"10.1109/DASC.1999.863738","DOIUrl":"https://doi.org/10.1109/DASC.1999.863738","url":null,"abstract":"This paper proposes an application of the Total Airspace & Airport Modeller (TAAM) tool to determining the impact of new communications, navigation, and surveillance (CNS) ground-based and avionics technology on the efficiency of the national airspace system (NAS). TAAM presents an opportunity to attack this problem by simulating aircraft movements using rules that mimic actual operations. The rules can be tailored to represent local procedures, restrictions, and conflict resolution strategies, a realistic picture of aircraft. This paper describes novel methods for manipulating TAAM output to produce a measure of the voice channel occupancy (VCO) in a sector. This method can be applied for current conditions, where all communications use the voice channel, and for the future case in which controller-pilot data link communications (CPDLC) is used to issue controller/pilot instructions. TAAM could then be used to examine the benefits of CPDLC in terms of relieving restrictions or reducing vectoring and holding. Overall system benefits such as reduction in delays or distance traveled could be estimated from the TAAM results.","PeriodicalId":269139,"journal":{"name":"Gateway to the New Millennium. 18th Digital Avionics Systems Conference. Proceedings (Cat. No.99CH37033)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125054865","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}
{"title":"An intelligent network interface card","authors":"M. H. Davis","doi":"10.1109/DASC.1999.822056","DOIUrl":"https://doi.org/10.1109/DASC.1999.822056","url":null,"abstract":"Considers the design of an Intelligent Network Interface Card. The designers believed that a system designer would like to have a network interface card (NIC) which has a specified functionality stable over the lifetime of the system, even though the NICs will periodically be replaced. To achieve this goal, they provide a NIC design that uses programmable elements. With the programmable elements, the NIC can provide the functionality that the system designer wants over the system's lifetime. Then, as the NIC is changed over the system's lifetime (e.g., using a different network technology), the new NIC can still provide the same functionality as the original NIC-thus allowing the system designer take advantage of new network technologies.","PeriodicalId":269139,"journal":{"name":"Gateway to the New Millennium. 18th Digital Avionics Systems Conference. Proceedings (Cat. No.99CH37033)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126113752","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}
{"title":"Induction motor parameter identification from operating data for electric drive applications","authors":"A.B. Proco, A. Keyhani","doi":"10.1109/DASC.1999.863657","DOIUrl":"https://doi.org/10.1109/DASC.1999.863657","url":null,"abstract":"Parameter identification is critical for high performance control strategies in which both dynamic performance and energy efficiency are expected. This paper describes the methodology of identifying the parameters of an induction motor in electric drive applications. The authors use operating data to estimate the parameters, therefore obtaining a more realistic representation of the parameters. As most of the parameters vary with the operating conditions, the authors show that a mapping exists between the operating conditions and the motor parameters.","PeriodicalId":269139,"journal":{"name":"Gateway to the New Millennium. 18th Digital Avionics Systems Conference. Proceedings (Cat. No.99CH37033)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123715442","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}
{"title":"Technology assessment and management methodology-an approach to system life sustainment and supportability enhancement","authors":"M. Chestnutwood, R. Levin","doi":"10.1109/DASC.1999.863678","DOIUrl":"https://doi.org/10.1109/DASC.1999.863678","url":null,"abstract":"System Life Sustainment of electronic systems, especially Military Legacy Systems, have traditionally been a sequential set of processes and plans that are applied to the system based on what point of the life cycle curve the system happens to be in at any point in time. With Military systems, these processes are stretched to the limit as the life of the systems is artificially extended by the services (to as much as 30 years). Critical elements of proper life cycle management of Military systems and their associated product implementations are system integration, product replacements, upgrades, and technology insertions. Reduced Government funding and manpower levels have further emphasized the need to improve life cycle management processes. As legacy systems age, their associated sustainment costs can rise dramatically due to obsolescence, reliability and supportability problems while at the same time the performance of the system, as compared to state of the market or technology, decreases. Key decision points occur during the life cycle that will impact long term funding and performance profiles. Early detection of sustainment problems provides sufficient time for the decision making process to implement an analysis of viable alternatives and solutions. To be complete the analysis must include an evaluation of alternative sources and support concepts, technology infusion, re-engineering, commercial technology insertions and comparisons of life cycle costs. To be successful in the support and evolution of systems, programs must have a well defined approach and tool set to aid in the decision making process.","PeriodicalId":269139,"journal":{"name":"Gateway to the New Millennium. 18th Digital Avionics Systems Conference. Proceedings (Cat. No.99CH37033)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115210880","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}
{"title":"How a cognitive tutor can improve pilot knowledge of mode transitions","authors":"D. Javaux, L. Sherry","doi":"10.1109/DASC.1999.863727","DOIUrl":"https://doi.org/10.1109/DASC.1999.863727","url":null,"abstract":"The behavior of a modern autopilot is governed by a set of rules. Several researchers have demonstrated that pilots have gaps in their knowledge of these rules and have difficulty explaining and predicting the behavior of the autopilot. Apart from the absence of training and cockpit annunciations, natural cognitive mechanisms cause pilots to forget (due to infrequent use) and simplify (due to similarities) the rules of behavior. This paper describes how a cognitive tutor can counteract the cognitive mechanisms that forget conditions and simplify rules.","PeriodicalId":269139,"journal":{"name":"Gateway to the New Millennium. 18th Digital Avionics Systems Conference. Proceedings (Cat. No.99CH37033)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122347289","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}
{"title":"Voice signal extraction for enhanced speech quality in noisy vehicle environments","authors":"G. Erten, F. Salam","doi":"10.1109/DASC.1999.863658","DOIUrl":"https://doi.org/10.1109/DASC.1999.863658","url":null,"abstract":"The voice extraction (VE) system described in this paper is an enabling technology that provides pure voice signals to speech processing systems in noisy vehicle environments. The technology is used to extract a single voice signal of interest from a mixture of sounds, including background noise, music, and multiple speakers. The technology embodies both hardware and software elements. Tests conducted inside a noisy vehicle are presented.","PeriodicalId":269139,"journal":{"name":"Gateway to the New Millennium. 18th Digital Avionics Systems Conference. Proceedings (Cat. No.99CH37033)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122782215","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}