{"title":"The impact of configuration management during the software product's lifecycle","authors":"A. G. Do","doi":"10.1109/DASC.1999.863679","DOIUrl":"https://doi.org/10.1109/DASC.1999.863679","url":null,"abstract":"This paper emphasizes the importance of configuration management (CM) during a software product's development lifecycle. It describes the growth of CM activities during the life of a project and identifies benefits of having a CM discipline, in terms of product integrity and return on investment. Key CM functions (i.e., configuration control, version management, change management, build and release support and process CM) and their respective roles during the software product development lifecycle are described. In addition, this paper identifies some new opportunities of CM roles in the 21/sup st/ century. Examples of poor configuration control and associated cost are identified and options for an effective CM system are discussed.","PeriodicalId":269139,"journal":{"name":"Gateway to the New Millennium. 18th Digital Avionics Systems Conference. Proceedings (Cat. No.99CH37033)","volume":"119 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":"131424508","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":"Empowering the planning controller","authors":"R. Graham, A. Marsden, F. Dowling, I. Pichancourt","doi":"10.1109/DASC.1999.863736","DOIUrl":"https://doi.org/10.1109/DASC.1999.863736","url":null,"abstract":"C3T (Controller Tools and Transition Trials) is a study project whose aim is to define, develop and evaluate controller roles, tasks and working methods suited to the introduction of ATM Decision Support Tools (DST) and data link communication. The project is in support of the EUROCONTROL ATM2000/sup +/ strategy and will apply both model and real time simulation techniques. The C3T project is investigating using a stepped approach, developing from current day planning and radar controller roles towards a multi-layer planning concept, including multi-sector planning and integrated air/ground operations. C3T aims to identify benefits accrued to airspace users and service providers from the proposed concepts and to define a pragmatic implementation of its findings. Numerous ATM tools have been proposed to cater for the predicted traffic demand over the next 10 years, however, their concept of operation often does not place sufficient emphasis on the human operator. The motivation for the C3T study is based on the expectation that the cost in workload to the controller and in economics to the airline can be reduced through early problem resolution, even if some predicted problems (due to trajectory prediction inaccuracies) would ultimately result in no controller intervention. Despite the resolution of such \"non-problems\" it is believed that early intervention will reduce the overall tactical radar controller (TC) workload when compared to current practices. We empower the planning controller (PC) to define problem resolutions through use of conflict probing (CP), system supported coordination (SYSCO) and advanced Computer Human Interaction (CHI).","PeriodicalId":269139,"journal":{"name":"Gateway to the New Millennium. 18th Digital Avionics Systems Conference. Proceedings (Cat. No.99CH37033)","volume":"3 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":"123185034","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":"Space-time display: a human-centered concept for cockpit-centered air traffic systems","authors":"K. Krishnan, S. Kertesz, J. A. Wise","doi":"10.1109/DASC.1999.863720","DOIUrl":"https://doi.org/10.1109/DASC.1999.863720","url":null,"abstract":"A novel concept for a cockpit decision aid was designed and subsequently tested in two experimental studies. The concept was derived from an analogy with the Minkowski \"space-time\" diagram (Hawking, 1988), which is generally used to explain the four-dimensional space-time construct in theoretical physics. In the first study, a pseudo three-dimensional (pseudo-3D), low-fidelity, display animation was created and tested with two other two-dimensional paradigms: a distance-from-ownship based depiction, and a time-from-ownship based depiction of air traffic. Eighteen pilots were asked to indicate in various scenarios, whether a manoeuvre was required to avoid a collision, the initial direction of such a manoeuvre, and the most imminent collision threat. Response times were found to be the least for the pseudo-3D \"space-time\" display. In the second study, three different pseudo-3D displays, all of which used the space-time predictor concept, were compared for utility and acceptability. Eighteen pilots were asked to respond to various scenarios, similar to the first part of the study. The results supported the \"pilot's perspective\" display as a more effective display for conflict avoidance. Overall results suggested that the presentation of spatio-temporal air traffic information, using the \"space-time\" paradigm, may be an effective human-centered concept for probable use in a cockpit-centered air traffic system.","PeriodicalId":269139,"journal":{"name":"Gateway to the New Millennium. 18th Digital Avionics Systems Conference. Proceedings (Cat. No.99CH37033)","volume":"1 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":"123187432","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":"The application on dynamic fault tree analysis for dissimilar fault-tolerant flight control system","authors":"Yao Yiping, Chen Minghua","doi":"10.1109/DASC.1999.863707","DOIUrl":"https://doi.org/10.1109/DASC.1999.863707","url":null,"abstract":"In critical applications such as civil aviation and signal control in railway traffic, very high reliability of computer control systems is required. So the dissimilar redundancy technique must be adopted in those systems to replace the similar redundancy technique. Similar redundancy can effectively avoid the noncommon stochastic failures that appear in systems, but for common faults such as errors in hardware design and software coding, it would ruin the whole system. In this paper, we introduce a dissimilar fault-tolerant control computer system with software and hardware in detail. A tool SHDFTA (Software/Hardware Dynamic Fault Tree Analysis) 1.0 combining a reliability analysis methodology-Dynamic Fault Tree Analysis (DFTA) is applied to evaluate the system and illustrate the new reliability brought by the dissimilar redundant technique, and the algorithm of DFTA is also introduced.","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":"127940056","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":"Freeing product line architectures from execution dependencies [avionics software]","authors":"B. S. Doerr, D. Sharp","doi":"10.1109/DASC.1999.863672","DOIUrl":"https://doi.org/10.1109/DASC.1999.863672","url":null,"abstract":"In 1995, an initiative was launched to assess the potential for reuse of operational flight program software across multiple fighter aircraft platforms, and to define and demonstrate a supporting system architecture based upon open commercial hardware, software, standards and practices. Essential aspects of the resulting component-based logical architecture developed therein have been previously described. The focus of this paper is on selected aspects of the physical architecture resulting from that work. First, this paper briefly restates principle results from the previously published work to set the context for discussion. It then defines the design goals of software physical architecture particularly relevant to product line development and discusses solutions toward achieving these goals.","PeriodicalId":269139,"journal":{"name":"Gateway to the New Millennium. 18th Digital Avionics Systems Conference. Proceedings (Cat. No.99CH37033)","volume":"143 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":"115999981","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":"Depth detection of targets in a monocular image sequence","authors":"Hong Guo, Yi Lu, S. Sarka","doi":"10.1109/DASC.1999.822002","DOIUrl":"https://doi.org/10.1109/DASC.1999.822002","url":null,"abstract":"This paper describes an approach for recovering structure of a moving target from a monocular image sequence. Within this paper, we assume the camera is stationary. We first use a motion detection algorithm to detect moving targets based on four heuristics derived from the properties of moving vehicles, maximum velocity, small velocity changes, coherent, and continuous motion. The second algorithm then estimates the distance of the moving targets using an over-constrained approach. We will show a proof-of-concept example from synthetic data. We have applied the approach to monocular image sequences captured by a moving camera to recover the 3D structure of stationary targets such as trees, telephone pole, etc. The experimental results on a monocular image sequence captured in an outdoor environment are also presented.","PeriodicalId":269139,"journal":{"name":"Gateway to the New Millennium. 18th Digital Avionics Systems Conference. Proceedings (Cat. No.99CH37033)","volume":"46 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":"126854864","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 open architecture for next generation space onboard processing","authors":"M. Harris, D. Ngo","doi":"10.1109/DASC.1999.863668","DOIUrl":"https://doi.org/10.1109/DASC.1999.863668","url":null,"abstract":"An advanced, scalable, standards-based high performance computer architecture, derived from DARPA High Performance Computing research, and adapted for space on-board processing is presented. Networked multicomputing achieves supercomputing performance by combining low cost, high performance, highly integrated single chip microprocessors and high bandwidth inter-processor network fabrics. To achieve high processing efficiency, a two level multicomputer isolates the application processing resource from the communication and control layer. Here we present a two level space on-board processor architecture in which the communication and control layer of the multiprocessor has been allocated functions essential to achieve required survivability and reliability for space applications.","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":"125232229","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":"Operational concepts for closely spaced parallel approaches","authors":"A. Pritchett, S. Landry","doi":"10.1109/DASC.1999.863730","DOIUrl":"https://doi.org/10.1109/DASC.1999.863730","url":null,"abstract":"The procedures used during closely spaced parallel approaches can have a dramatic impact on the safety, efficiency and cost of this operation. As such, it is as important to systematically investigate the potential procedures for this operation as it is to develop the various technologies the procedure may require. This paper outlines the many different variants in possible procedures, and then discusses the metrics by which each variant can be measured for its impact on safety, efficiency and cost. Numerical simulations of the aircraft trajectories that result from each procedure are demonstrated as a technique that allows for quick a priori analysis of their efficacy.","PeriodicalId":269139,"journal":{"name":"Gateway to the New Millennium. 18th Digital Avionics Systems Conference. Proceedings (Cat. No.99CH37033)","volume":"1 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":"131302578","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":"Jump starting 42V powernet vehicles","authors":"P. Nicastri, H. Huang","doi":"10.1109/DASC.1999.822005","DOIUrl":"https://doi.org/10.1109/DASC.1999.822005","url":null,"abstract":"The automotive industry today is faced with ever increasing electrical power demands that are stretching the capabilities of present on-board power supplies. The use of electrical and electronic features to enhance customer comfort, convenience and safety, such as electronic automatic climate control, entertainment systems, antilock brakes (ABS) and traction control (TC) systems, contribute to exponential growth in power demand and also to size and complexity of the wiring harnesses as well. The substantial range of options available for dealing with emergency aid in dual voltage vehicles is discussed. These options differ in both cost of implementation and relative freedom from failure modes and hazards. The choice will be complex. The decision on which approach to use will likely vary among auto manufacturers. What is critical is not that all manufacturers have exactly the same implementation, but that there is an agreement on the approaches that are taken, and that those varied approaches are compatible once these systems are in the hand of the public. It will be required that all manufacturers use the same connection for the new 36V batteries.","PeriodicalId":269139,"journal":{"name":"Gateway to the New Millennium. 18th Digital Avionics Systems Conference. Proceedings (Cat. No.99CH37033)","volume":"30 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":"134361895","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":"USAF approval of data link communication equipment for civil air traffic control","authors":"D. Thornton","doi":"10.1109/DASC.1999.863744","DOIUrl":"https://doi.org/10.1109/DASC.1999.863744","url":null,"abstract":"Operations within civil airspace will transition from traditional ground-based air traffic control (ATC) to air traffic management (ATM). A concept that requires aircrews and ground managers to share responsibility of aircraft separation assurance. Increased levels of information exchange will be necessary for this concept to work safely; therefore, air-ground communications will transition from voice to data link communications. The nature of data link communications procurement requires that avionics suppliers not only verify their products meet contractual performance requirements, but also demonstrate that their products are compatible with civil communication networks and ATC. In addition, the USAF needs to demonstrate that their crew-training program is adequate to maintain the required level of aircrew proficiency and equipment can be maintained for the required level of system performance, integrity, and interoperability with the civil environment. This paper outlines some of the certification issues facing the USAF with respect to the 'Approval for Use' of data link equipment to be used for communication with ATC. It will also suggest a methodology for the avionics supplier and USAF to obtain the approvals required to ensure the installation of data link communications equipment on military aircraft will remain interoperable with civil ATC.","PeriodicalId":269139,"journal":{"name":"Gateway to the New Millennium. 18th Digital Avionics Systems Conference. Proceedings (Cat. No.99CH37033)","volume":"332 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":"132495123","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}