Pub Date : 2009-12-04DOI: 10.1109/DASC.2009.5347558
Elida C. Smith
As the Federal Aviation Administration (FAA) moves forward with plans to evolve operations of the National Airspace System (NAS), as well as to achieve the various operational improvements described by the Next Generation Air Transportation System (NextGen) Implementation Plan [1], there is an increasing need to assess a broad range of solutions in a systematic manner to determine which will prove most desirable for implementation. Discriminating between these concepts can be a difficult task because of the variability in the level of detail that exists and the different Air Traffic Management (ATM) aspects that are described. Understanding these differences is important because of their far-reaching impact to the NAS evolution path.
{"title":"Development and application of a classification system for comparing future air traffic management operational concepts","authors":"Elida C. Smith","doi":"10.1109/DASC.2009.5347558","DOIUrl":"https://doi.org/10.1109/DASC.2009.5347558","url":null,"abstract":"As the Federal Aviation Administration (FAA) moves forward with plans to evolve operations of the National Airspace System (NAS), as well as to achieve the various operational improvements described by the Next Generation Air Transportation System (NextGen) Implementation Plan [1], there is an increasing need to assess a broad range of solutions in a systematic manner to determine which will prove most desirable for implementation. Discriminating between these concepts can be a difficult task because of the variability in the level of detail that exists and the different Air Traffic Management (ATM) aspects that are described. Understanding these differences is important because of their far-reaching impact to the NAS evolution path.","PeriodicalId":313168,"journal":{"name":"2009 IEEE/AIAA 28th Digital Avionics Systems Conference","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125060204","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}
Pub Date : 2009-12-04DOI: 10.1109/DASC.2009.5347521
B. Sridhar, D. Kulkarni
The ability of traffic controllers to separate aircraft determines the capacity of the region of airspace under their control, referred to as a sector. Complexity metrics, specifically dynamic density, is used as an estimate for controller workload. The prediction of dynamic density is required for the development of efficient long-term air traffic plans. This paper explores the influence of trajectory errors on the prediction of dynamic density and uses a worst-case analysis to describe the conditions under which forecast errors may lead to excessive complexity. Although the approach has general applicability, it is described using one definition of complexity. Depending on the sector and the complexity function, when a sector is highly congested, the method identifies aircraft entering the sector at certain locations, boundaries and altitudes, whose errors in prediction contribute significantly to the increase in workload. If these errors cannot be reduced, it may be necessary to limit the traffic approaching the sector from these altitudes and boundaries.
{"title":"Impact of uncertainty on the prediction of airspace complexity of congested sectors","authors":"B. Sridhar, D. Kulkarni","doi":"10.1109/DASC.2009.5347521","DOIUrl":"https://doi.org/10.1109/DASC.2009.5347521","url":null,"abstract":"The ability of traffic controllers to separate aircraft determines the capacity of the region of airspace under their control, referred to as a sector. Complexity metrics, specifically dynamic density, is used as an estimate for controller workload. The prediction of dynamic density is required for the development of efficient long-term air traffic plans. This paper explores the influence of trajectory errors on the prediction of dynamic density and uses a worst-case analysis to describe the conditions under which forecast errors may lead to excessive complexity. Although the approach has general applicability, it is described using one definition of complexity. Depending on the sector and the complexity function, when a sector is highly congested, the method identifies aircraft entering the sector at certain locations, boundaries and altitudes, whose errors in prediction contribute significantly to the increase in workload. If these errors cannot be reduced, it may be necessary to limit the traffic approaching the sector from these altitudes and boundaries.","PeriodicalId":313168,"journal":{"name":"2009 IEEE/AIAA 28th Digital Avionics Systems Conference","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123157240","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}
Pub Date : 2009-12-04DOI: 10.1109/DASC.2009.5347511
R. Windhorst, M. Refai, S. Karahan
This paper describes simulations of an automated planning system that routes flights around airspace impacted by forecasted convective weather. If the system predicts that a flight will enter a weather-impacted airspace within a predefined time horizon, it generates a new route. Because the forecasts are uncertain, the system periodically generates, using updates of the weather forecasts and radar tracks, new reroutes. The simulations included convective weather in the northeastern quadrant of the United States over a 24-hr period. Multiple simulations investigated the system performance as the planning horizon and planning frequency varied. As the planning horizon and frequency increased, the system successfully routed more traffic around weather but with more route changes. For a planning horizon of 20 to 120 minutes and a planning frequency of four cycles per hour, the reroutes increased flight time by 3.3% and avoided 79% of the weather-impacted airspaces that were detected. Most flights required one to three reroutes to pass by a weather-impacted airspace, while the worst case flights required six reroutes.
{"title":"Convective weather avoidance with uncertain weather forecasts","authors":"R. Windhorst, M. Refai, S. Karahan","doi":"10.1109/DASC.2009.5347511","DOIUrl":"https://doi.org/10.1109/DASC.2009.5347511","url":null,"abstract":"This paper describes simulations of an automated planning system that routes flights around airspace impacted by forecasted convective weather. If the system predicts that a flight will enter a weather-impacted airspace within a predefined time horizon, it generates a new route. Because the forecasts are uncertain, the system periodically generates, using updates of the weather forecasts and radar tracks, new reroutes. The simulations included convective weather in the northeastern quadrant of the United States over a 24-hr period. Multiple simulations investigated the system performance as the planning horizon and planning frequency varied. As the planning horizon and frequency increased, the system successfully routed more traffic around weather but with more route changes. For a planning horizon of 20 to 120 minutes and a planning frequency of four cycles per hour, the reroutes increased flight time by 3.3% and avoided 79% of the weather-impacted airspaces that were detected. Most flights required one to three reroutes to pass by a weather-impacted airspace, while the worst case flights required six reroutes.","PeriodicalId":313168,"journal":{"name":"2009 IEEE/AIAA 28th Digital Avionics Systems Conference","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130031441","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}
Pub Date : 2009-12-04DOI: 10.1109/DASC.2009.5347515
E. Salaun, A. Vela, E. Feron, J. Clarke, S. Solak
This paper presents a new methodology for rapidly generating complexity maps for various configurations taking into account the influence of some conflict avoidance algorithm at a pair-wise intersection level. The complexity maps are based on analytical expressions, validated through simulations, of the probability of conflict and the spatial distribution of aircraft. This ¿closed-loop¿ analysis explicitly considers the role of the conflict resolution algorithm, here the offset method. It gives therefore a more realistic image of the current and future health of the considered airspace as a function of the encounter and aircraft flows characteristics. Some results of the usual ¿open-loop¿ approach are also validated, while highlighting their limitations.
{"title":"A simplified approach to determine airspace complexity maps under automated conflict resolution","authors":"E. Salaun, A. Vela, E. Feron, J. Clarke, S. Solak","doi":"10.1109/DASC.2009.5347515","DOIUrl":"https://doi.org/10.1109/DASC.2009.5347515","url":null,"abstract":"This paper presents a new methodology for rapidly generating complexity maps for various configurations taking into account the influence of some conflict avoidance algorithm at a pair-wise intersection level. The complexity maps are based on analytical expressions, validated through simulations, of the probability of conflict and the spatial distribution of aircraft. This ¿closed-loop¿ analysis explicitly considers the role of the conflict resolution algorithm, here the offset method. It gives therefore a more realistic image of the current and future health of the considered airspace as a function of the encounter and aircraft flows characteristics. Some results of the usual ¿open-loop¿ approach are also validated, while highlighting their limitations.","PeriodicalId":313168,"journal":{"name":"2009 IEEE/AIAA 28th Digital Avionics Systems Conference","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115776848","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}
Pub Date : 2009-12-04DOI: 10.1109/DASC.2009.5347440
Youssef Laarouchi, Y. Deswarte, D. Powell, J. Arlat, Eric de Nadai
In this paper, we present two case studies identified for new aircraft generations in which bidirectional communications are carried between onboard and off-board computers. These two case studies deal respectively with flight parameter calculation and enhanced maintenance operations for future aircraft. We emphasize the safety and security challenges in such communications, and propose a safe architecture allowing the connection of commercial computers to avionics systems, without altering any embedded software component behavior.
{"title":"Connecting commercial computers to avionics systems","authors":"Youssef Laarouchi, Y. Deswarte, D. Powell, J. Arlat, Eric de Nadai","doi":"10.1109/DASC.2009.5347440","DOIUrl":"https://doi.org/10.1109/DASC.2009.5347440","url":null,"abstract":"In this paper, we present two case studies identified for new aircraft generations in which bidirectional communications are carried between onboard and off-board computers. These two case studies deal respectively with flight parameter calculation and enhanced maintenance operations for future aircraft. We emphasize the safety and security challenges in such communications, and propose a safe architecture allowing the connection of commercial computers to avionics systems, without altering any embedded software component behavior.","PeriodicalId":313168,"journal":{"name":"2009 IEEE/AIAA 28th Digital Avionics Systems Conference","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130685690","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}
Pub Date : 2009-12-04DOI: 10.1109/DASC.2009.5347538
M. Steiner, J. Krozel
A novel concept of using ensemble-based numerical weather prediction model data for weather-related, probabilistic aviation impact forecasting is demonstrated. This new concept represents a paradigm shift from “creating ensembles of weather information” (e.g., maps of predicted weather hazard intensity) to “developing ensembles of aviation userrelevant information” (i.e., maps of potential throughput as measured by the available flow capacity ratio), which entails a translation of weather forecasts into predictions of reduced airspace capacity. The proof-of-concept is exemplified by focusing on convective storms; however, the advocated approach may be applicable to other aviation hazards, like turbulence, icing, or ceiling and visibility as well. Although the concept is most pertinent to strategic en route traffic flow management, it could be extended to terminal area applications, such as predicting major wind shifts on runways, the onset of precipitation, or a transition from rain to snow. A probabilistic approach is most appropriate for strategic planning horizons, for which deterministic weather forecast are significantly less accurate and an ensemble of forecasts may provide better guidance about the spread of possible future weather scenarios.
{"title":"Translation of ensemble-based weather forecasts into probabilistic air traffic capacity impact","authors":"M. Steiner, J. Krozel","doi":"10.1109/DASC.2009.5347538","DOIUrl":"https://doi.org/10.1109/DASC.2009.5347538","url":null,"abstract":"A novel concept of using ensemble-based numerical weather prediction model data for weather-related, probabilistic aviation impact forecasting is demonstrated. This new concept represents a paradigm shift from “creating ensembles of weather information” (e.g., maps of predicted weather hazard intensity) to “developing ensembles of aviation userrelevant information” (i.e., maps of potential throughput as measured by the available flow capacity ratio), which entails a translation of weather forecasts into predictions of reduced airspace capacity. The proof-of-concept is exemplified by focusing on convective storms; however, the advocated approach may be applicable to other aviation hazards, like turbulence, icing, or ceiling and visibility as well. Although the concept is most pertinent to strategic en route traffic flow management, it could be extended to terminal area applications, such as predicting major wind shifts on runways, the onset of precipitation, or a transition from rain to snow. A probabilistic approach is most appropriate for strategic planning horizons, for which deterministic weather forecast are significantly less accurate and an ensemble of forecasts may provide better guidance about the spread of possible future weather scenarios.","PeriodicalId":313168,"journal":{"name":"2009 IEEE/AIAA 28th Digital Avionics Systems Conference","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133566120","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}
Pub Date : 2009-12-04DOI: 10.1109/DASC.2009.5347476
L. Kramer, L. Prinzel, R. Bailey, J. Arthur, K. Shelton, Steven P. Williams
Eight pilots participated as test subjects in a fixed-based simulation experiment to evaluate advanced vision display technologies such as enhanced vision (EV) and synthetic vision (SV) for providing terrain imagery on flight displays in a lunar lander vehicle. Subjects were asked to fly 20 approaches to the Apollo 15 lunar landing site with four different display concepts - Baseline (symbology only with no terrain imagery), EV only (terrain imagery from forward looking infrared, or FLIR, and light detection and ranging, or LIDAR, sensors), SV only (terrain imagery from onboard database), and fused EV and SV concepts. As expected, manual landing performance was excellent (within a meter of landing site center) and not affected by the inclusion of EV or SV terrain imagery on the Lunar Lander flight displays. Subjective ratings revealed significant situation awareness improvements with the concepts employing EV and/or SV terrain imagery compared to the baseline condition that had no terrain imagery. In addition, display concepts employing EV imagery (compared to the SV and baseline concepts which had none) were significantly better for pilot detection of intentional but unannounced navigation failures since this imagery provided an intuitive and obvious visual methodology to monitor the validity of the navigation solution.
{"title":"Effects of synthetic and enhanced vision technologies for lunar landings","authors":"L. Kramer, L. Prinzel, R. Bailey, J. Arthur, K. Shelton, Steven P. Williams","doi":"10.1109/DASC.2009.5347476","DOIUrl":"https://doi.org/10.1109/DASC.2009.5347476","url":null,"abstract":"Eight pilots participated as test subjects in a fixed-based simulation experiment to evaluate advanced vision display technologies such as enhanced vision (EV) and synthetic vision (SV) for providing terrain imagery on flight displays in a lunar lander vehicle. Subjects were asked to fly 20 approaches to the Apollo 15 lunar landing site with four different display concepts - Baseline (symbology only with no terrain imagery), EV only (terrain imagery from forward looking infrared, or FLIR, and light detection and ranging, or LIDAR, sensors), SV only (terrain imagery from onboard database), and fused EV and SV concepts. As expected, manual landing performance was excellent (within a meter of landing site center) and not affected by the inclusion of EV or SV terrain imagery on the Lunar Lander flight displays. Subjective ratings revealed significant situation awareness improvements with the concepts employing EV and/or SV terrain imagery compared to the baseline condition that had no terrain imagery. In addition, display concepts employing EV imagery (compared to the SV and baseline concepts which had none) were significantly better for pilot detection of intentional but unannounced navigation failures since this imagery provided an intuitive and obvious visual methodology to monitor the validity of the navigation solution.","PeriodicalId":313168,"journal":{"name":"2009 IEEE/AIAA 28th Digital Avionics Systems Conference","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134526268","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}
Pub Date : 2009-12-04DOI: 10.1109/DASC.2009.5347550
P. Manzi
As part of the Cassis (CTA/ATC System Integration Studies) project, 308 flight trials have been carried out at Stockholm Arlanda Airport in cooperation with Scandinavian Airlines System. The trials, which took place in low and peak traffic, highlighted the potential benefits that can be gained by assuming that aircraft can meet a controlled time of arrival (CTA) with high accuracy and by assigning that time up to 45 minutes prior to a metering point for the Stockholm Terminal Maneuvering Area. Boeing 737NG aircraft, equipped with the most advanced Flight Management Systems, could meet their assigned time with 30 second accuracy in 88% of the trials. Pilots of MD-80 aircraft, which do not have an FMS function to aid pilots in meeting CTAs, met their assigned time with 30 second accuracy in 73% of trials. An analysis of these flight trials and the potential impact of their results is carried out. A number of CTA based applications which take advantage of the aircraft's ability to meet an assigned time are proposed and evaluated. One of these applications is “delay en-route”, or having aircraft slow down to meet a CTA rather than performing orbital holding at a low altitude. Another application explored was “delay on ground”, where aircraft departing from a nearby airport were assigned a CTA prior to takeoff and could avoid eventual holdings by delaying takeoff. This paper will also present recommendations as to how CTA operations can be further developed and introduced into operations.
{"title":"Wide scale CTA flight trials at Stockholm Arlanda Airport","authors":"P. Manzi","doi":"10.1109/DASC.2009.5347550","DOIUrl":"https://doi.org/10.1109/DASC.2009.5347550","url":null,"abstract":"As part of the Cassis (CTA/ATC System Integration Studies) project, 308 flight trials have been carried out at Stockholm Arlanda Airport in cooperation with Scandinavian Airlines System. The trials, which took place in low and peak traffic, highlighted the potential benefits that can be gained by assuming that aircraft can meet a controlled time of arrival (CTA) with high accuracy and by assigning that time up to 45 minutes prior to a metering point for the Stockholm Terminal Maneuvering Area. Boeing 737NG aircraft, equipped with the most advanced Flight Management Systems, could meet their assigned time with 30 second accuracy in 88% of the trials. Pilots of MD-80 aircraft, which do not have an FMS function to aid pilots in meeting CTAs, met their assigned time with 30 second accuracy in 73% of trials. An analysis of these flight trials and the potential impact of their results is carried out. A number of CTA based applications which take advantage of the aircraft's ability to meet an assigned time are proposed and evaluated. One of these applications is “delay en-route”, or having aircraft slow down to meet a CTA rather than performing orbital holding at a low altitude. Another application explored was “delay on ground”, where aircraft departing from a nearby airport were assigned a CTA prior to takeoff and could avoid eventual holdings by delaying takeoff. This paper will also present recommendations as to how CTA operations can be further developed and introduced into operations.","PeriodicalId":313168,"journal":{"name":"2009 IEEE/AIAA 28th Digital Avionics Systems Conference","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133445141","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}
Pub Date : 2009-12-04DOI: 10.1109/DASC.2009.5347419
Ho Dac Tu, Park Jingyu, S. Shimamoto, J. Kitaori
This paper has conducted a practical experiment to investigate the transmission characteristics between the two aircrafts on the air in aeronautical VHF frequency band. Based on that, a proper scheme combining the two typical features in any avionics application, space and time domains respectively. Space-Time Division Multiple Access (S-TDMA) scheme is incorporated were each sub frame is considered for each sub area. With high accuracy timing derived from other applications, all aircrafts in each sub area are operated autonomously from transmitting, broadcasting its own position information or relaying the neighbor's position information. In addition, against the unevenly distributed aircrafts, ADS-TSR (Autonomous Distance Based-Time Slot Reuse) scheme is proposed to enhance spectrum usage and system performance as well. The system shows the capability in enabling a new generation of widening the view for cockpit display not only for nearby area but also beyond the horizon and contribute to the feasibility of the future trend, a concept of free flight in aviation industry.
本文通过实际实验研究了两机在航空甚高频波段的空中传输特性。在此基础上，结合任意航空电子应用的两个典型特征，分别在空间和时间域提出了合适的方案。采用空时分多址(S-TDMA)方案，对每个子区域考虑每个子帧。通过其他应用获得的高精度定时，每个子区域的所有飞机都可以自主操作，无需发送、广播自己的位置信息或中继邻居的位置信息。此外，针对飞机分布不均匀的情况，提出了ADS-TSR (Autonomous Distance - based time Slot Reuse)方案，以提高频谱利用率和系统性能。该系统显示出了将驾驶舱显示视野扩大到近处乃至地平线以外的新一代的能力，有助于实现航空业界自由飞行概念的未来趋势的可行性。
{"title":"Oceanic air traffic control based on space-time division multiple access","authors":"Ho Dac Tu, Park Jingyu, S. Shimamoto, J. Kitaori","doi":"10.1109/DASC.2009.5347419","DOIUrl":"https://doi.org/10.1109/DASC.2009.5347419","url":null,"abstract":"This paper has conducted a practical experiment to investigate the transmission characteristics between the two aircrafts on the air in aeronautical VHF frequency band. Based on that, a proper scheme combining the two typical features in any avionics application, space and time domains respectively. Space-Time Division Multiple Access (S-TDMA) scheme is incorporated were each sub frame is considered for each sub area. With high accuracy timing derived from other applications, all aircrafts in each sub area are operated autonomously from transmitting, broadcasting its own position information or relaying the neighbor's position information. In addition, against the unevenly distributed aircrafts, ADS-TSR (Autonomous Distance Based-Time Slot Reuse) scheme is proposed to enhance spectrum usage and system performance as well. The system shows the capability in enabling a new generation of widening the view for cockpit display not only for nearby area but also beyond the horizon and contribute to the feasibility of the future trend, a concept of free flight in aviation industry.","PeriodicalId":313168,"journal":{"name":"2009 IEEE/AIAA 28th Digital Avionics Systems Conference","volume":"244 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133464384","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}
Pub Date : 2009-12-04DOI: 10.1109/DASC.2009.5347563
R. Duren
Many studies on managing obsolescence and refreshing technology concentrate on replacing hardware to improve the performance of legacy systems. In contrast, the author's research has concentrated on the development of methods that can significantly enhance the performance of legacy systems while requiring few or no hardware modifications. If hardware replacement is allowed, these methods can be leveraged to further improve the upgraded systems. The methods can be characterized either as algorithmic or architectural methods. Algorithmic methods include techniques such as new data compression routines. A previous paper by the author and a fellow researcher has presented data compression routines that are suitable for implementation on legacy MIL-STD-1553 data buses. As expected, these routines where shown to increase the communication throughput. What may be less obvious is that they also increased the time available to perform computation. Architectural techniques include repartitioning of software functions and/or communications to free system resources. This paper presents these and other methods for increasing the performance of legacy avionics systems. The same techniques can also be applied to improve the design of new systems.
{"title":"Algorithmic and architectural methods for performance enhancement of avionics systems","authors":"R. Duren","doi":"10.1109/DASC.2009.5347563","DOIUrl":"https://doi.org/10.1109/DASC.2009.5347563","url":null,"abstract":"Many studies on managing obsolescence and refreshing technology concentrate on replacing hardware to improve the performance of legacy systems. In contrast, the author's research has concentrated on the development of methods that can significantly enhance the performance of legacy systems while requiring few or no hardware modifications. If hardware replacement is allowed, these methods can be leveraged to further improve the upgraded systems. The methods can be characterized either as algorithmic or architectural methods. Algorithmic methods include techniques such as new data compression routines. A previous paper by the author and a fellow researcher has presented data compression routines that are suitable for implementation on legacy MIL-STD-1553 data buses. As expected, these routines where shown to increase the communication throughput. What may be less obvious is that they also increased the time available to perform computation. Architectural techniques include repartitioning of software functions and/or communications to free system resources. This paper presents these and other methods for increasing the performance of legacy avionics systems. The same techniques can also be applied to improve the design of new systems.","PeriodicalId":313168,"journal":{"name":"2009 IEEE/AIAA 28th Digital Avionics Systems Conference","volume":"2012 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131110472","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}
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