2016 IEEE/AIAA 35th Digital Avionics Systems Conference (DASC)最新文献

{"title":"4D continuous descent operations supported by an electronic flight bag: A human-in-the-loop study","authors":"X. Prats, Bianca Bendris, Ramon Dalmau, J. Montolio, Brent Day, H. Lenz, R. Kohrs","doi":"10.1109/DASC.2016.7778022","DOIUrl":"https://doi.org/10.1109/DASC.2016.7778022","url":null,"abstract":"This paper describes a set of flight simulation experiments carried out with the DLR's Generic Cockpit Simulator (GECO). A new concept named time and energy managed operations (TEMO), which aims to enable advanced four dimensional (4D) continuous descent operations (CDO), was evaluated after three full days of experiments with qualified pilots. The experiment focused to investigate the possibility of using a 4D-controller on a modern aircraft with unmodified or only slightly modified avionic systems. This was achieved by executing the controller in an Electronic Flight Bag (EFB) and using the pilot to “close the loop” by entering speed and other advisories into the autopilot Flight Control Unit (FCU). The outcome of the experiments include subjective (questionnaires answered by pilots) and objective (trajectory logs) data. Data analysis showed a very good acceptance (both in terms of safety and operability of the procedure) from the participating crews, only with minor suggestions to be improved in future versions of the controller and the speed advisories update rates. Good time accuracy all along the descent trajectory was also observed.","PeriodicalId":340472,"journal":{"name":"2016 IEEE/AIAA 35th Digital Avionics Systems Conference (DASC)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126053943","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 of a low complexity filter bank satisfying LDACS1 spectral mask specifications for base-station receivers in air-ground communications","authors":"Abhishek Ambede, A. P. Vinod, A. Madhukumar","doi":"10.1109/DASC.2016.7778041","DOIUrl":"https://doi.org/10.1109/DASC.2016.7778041","url":null,"abstract":"The sustained air traffic growth worldwide has resulted in the need for upgrading the existing global air traffic management (ATM) system. Consequently, a new standard called L-band Digital Aeronautical Communication System (LDACS) is being developed for the air-ground communications component of the next generation ATM systems. Amongst the options being considered for LDACS, the LDACS type 1 (LDACS1) is the most superior and mature candidate and is likely to be the final choice for deployment. The presence of previously deployed and operational legacy systems in the L-band has led to stringent spectral mask specifications for LDACS1, to ensure there is no interference caused to the former. In this paper, we propose the design of a digital filter bank which can satisfy the LDACS1 spectral mask specifications while also achieving low complexity of implementation. Design of the proposed filter bank is based on the improved coefficient decimation method. With the help of a design example, we show that when compared with the discrete Fourier transform based filter bank, the proposed filter bank achieves 71.49% reduction in multiplication complexity.","PeriodicalId":340472,"journal":{"name":"2016 IEEE/AIAA 35th Digital Avionics Systems Conference (DASC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124328950","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":"Increasing flight safety using flight sensory illusions on a spatial disorientation simulator","authors":"J. Boril, V. Smrž, J. Leuchter, Erik Blasch","doi":"10.1109/DASC.2016.7778095","DOIUrl":"https://doi.org/10.1109/DASC.2016.7778095","url":null,"abstract":"The paper presents a method for developing illusionary flight profiles situations for practical testing of pilots using the GYRO IPT II spatial disorientation simulator. Standard flight profiles do not use the full capability of the simulator to train pilots for recognition and recovery from illusions appearing unexpectedly. For this reason, there is a need to create new flight profiles so as to demonstrate illusions being implemented into a comprehensive flight task, including a choice of an appropriate type of illusion which is coming unexpectedly. Such demonstrations of flight illusions increase the fidelity and are closer to the real flight conditions under which they may emerge. The main objective of the aforementioned research lies in enhancing pilots' capabilities to recognize an emerging flight illusion and, as a result of their skills obtained in training, to respond to them correctly. This paper presents the procedure, execution and evaluation of the experiments being performed for testing the newly generated flight exercises. The experiments were conducted on a sample of Czech Air Force military pilots in the initial phases of their flight training. The evaluation results identify deviations from the standard flight trajectory caused by an effect of illusions. The system provides a methodology for additional usage of the GYRO IPT II spatial disorientation simulator.","PeriodicalId":340472,"journal":{"name":"2016 IEEE/AIAA 35th Digital Avionics Systems Conference (DASC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130859298","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":"Model-based transition of IMA architecture into configuration data","authors":"M. Halle, F. Thielecke","doi":"10.1109/DASC.2016.7777950","DOIUrl":"https://doi.org/10.1109/DASC.2016.7777950","url":null,"abstract":"Integrated Modular Avionics (IMA) as successor of conventional avionics have many advantages with respect to flexibility, re-usabilty and standardisation. Systems based on IMA consist of a generic hardware platform with a standardised hardware- and software interface and dedicated functions for module management. Due to the many possibilities with respect to hard- and software, creating an IMA architecture that fulfils requirements like redundancy, weight and costs is a comprehensive task. Tools exist that support this design step. On the other hand, if the platform and architecture is chosen, a configuration defines how system applications are integrated on the selected IMA modules and is an important aspect of the IMA development and integration process. Again, tools exist that support this design step for the various IMA module types. The challenge is to consequently re-use information of architecture definitions for configuration engineering. In the present design- and development process, configuration documents are created inefficiently from scratch. This is time-consuming, prone to errors due to misinterpretation and hard to trace and to maintain. In this work, to bridge this gap between early architecting and configuration engineering, formal transformation methods were investigated and developed. These implement an automated transformation of relevant architecture into configuration data and vice versa.","PeriodicalId":340472,"journal":{"name":"2016 IEEE/AIAA 35th Digital Avionics Systems Conference (DASC)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130911315","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":"FACTS2: A service oriented simulation framework for aeronautical communication system evaluation","authors":"T. Graupl","doi":"10.1109/DASC.2016.7777988","DOIUrl":"https://doi.org/10.1109/DASC.2016.7777988","url":null,"abstract":"The modernization of the European air transportation system will increase the need for data communication. This creates the need for large-scale simulations to ascertain that new aeronautical communication systems fulfil the requirements of future air traffic management communication. This paper presents a framework for such simulations based on service-oriented software architecture. The Framework for Aeronautical Communications and Traffic Simulations 2 (FACTS2) is based on the concept of service oriented simulation creating complex simulations from simple software building blocks called “services”. Separating the tasks of services appropriately allows for natural parallelization at the service level. FACTS2 was applied to the simulation of European reference air traffic for the years 2007 to 2035 that will provide the basis for future aeronautical communication evaluations. It could be shown that the service-oriented simulation approach offers significant performance gains through parallelization scaling linearly with the number of available CPUs. The air traffic simulation results were validated against published simulation results to verify their correctness.","PeriodicalId":340472,"journal":{"name":"2016 IEEE/AIAA 35th Digital Avionics Systems Conference (DASC)","volume":"190 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116978526","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 open source, formally-proven seL4 microkernel: Considerations for use in avionics","authors":"S. Vanderleest","doi":"10.1109/DASC.2016.7778001","DOIUrl":"https://doi.org/10.1109/DASC.2016.7778001","url":null,"abstract":"Mixed criticality functions integrated on a single computing platform require special attention to safety and security. ARINC 653 and DO-248 provide guidelines for partitioning software so that functions of differing levels of criticality are isolated from one another. The partitioning environment operating system isolates each partition, and because it is foundational it must be certified to the highest level of criticality of any supported partition. Formal methods are one means to achieve high levels of safety and security, but because of their high cost, a very small footprint is desirable. One promising new development is the open source seL4 microkernel, a formally proven microkernel. The seL4 microkernel is intentionally simple, providing the bare minimum features to isolate software functionality. In this paper we analyze the suitability of seL4 for use in digital avionics systems that require high levels of safety and/or security. We also provide an overview of our work to leverage the assurance arguments of seL4, to contribute to the ecosystem around it, and to demonstrate use of seL4 for an embedded platform: a Helmet Mounted Display (HMD) system.","PeriodicalId":340472,"journal":{"name":"2016 IEEE/AIAA 35th Digital Avionics Systems Conference (DASC)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124178560","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":"Code acquisition of a DS-CDMA receiver with antenna arrays and blind adaptation for air traffic control","authors":"Tao Chen, Yongfei Ding, Ruifan Pang, Cheng Gong, Dinghai Xu, Bo Chen, Hengyang Zhang","doi":"10.1109/DASC.2016.7777942","DOIUrl":"https://doi.org/10.1109/DASC.2016.7777942","url":null,"abstract":"Code-Division Multiple-Access (CDMA) [1] is widely used in both civil and military applications. It does take advantages from the system characteristics. For example, higher data rate and user capacity, better multipath resolution [2] and resistance to jamming, low probability of interception, accurate timing and ranging, and more importantly, stronger ability to suppress interference and jamming. To airborne applications, such as air traffic control, the use of CDMA as an alternative is highly suggested [3]. The reasons to do so are as follows. First, radio systems are spectrum sensitive, especially to the airborne environments. Careful spectrum regulation is needed. Second, most of current systems available are narrowband. Adding new system to limited spectrum resources is very difficult. Third, CDMA is wideband in nature. The signal power is spread and hides below the white noise level. As a result, its interference to narrowband systems is marginal. Fourth, CDMA receivers [4] by proper design have the ability of suppressing narrowband interference and Multiple Access Interference (MAI). Fifth, adaptive filter algorithms can provide excellent tracking performance to airborne dynamics. Sixth, incorporating the use of antenna arrays [5] may further improve the performance to interference suppression and user capacity. In this paper, proposed is an adaptive DS-CDMA receiver with antenna arrays and blind adaptation. This receiver structure assumes the same amount of information as the conventional matched filter receiver, namely, the signature sequence and the synchronization information (the timing and the carrier phase) of the desired user. In reality, the signature sequence is usually available at the receiver, while the code timing [6] and the carrier phase have to be estimated. As a consequence, the development of reliable and efficient code acquisition algorithm to the proposed receiver structure is important. The novelty of this algorithm is that the estimator is based on processing the weight vector of the adaptive receiver and the only side information the receiver requires in order to form its estimate is the spreading sequence of the desired user.","PeriodicalId":340472,"journal":{"name":"2016 IEEE/AIAA 35th Digital Avionics Systems Conference (DASC)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115461080","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":"Object detection in urban environment","authors":"I. Pham, M. Polasek, R. Jalovecky","doi":"10.1109/DASC.2016.7778065","DOIUrl":"https://doi.org/10.1109/DASC.2016.7778065","url":null,"abstract":"This paper deals with problems of surface moving object detection in urban environmental conditions in video sequences acquired in visible spectrum using various techniques. The objects feature is changed in dependence on time and space condition such as weather condition, urban environment, etc. In this article, we proposed a combined method for object detection in video sequences using three techniques that are a template matching technique, a threshold technique and a background subtraction. The video sequences were captured using Samsung HMX - F90 with a resolution 1280× 720. However, to test the algorithm, we have resized to the resolution 160×120. The designed algorithms were tested in program Matlab.","PeriodicalId":340472,"journal":{"name":"2016 IEEE/AIAA 35th Digital Avionics Systems Conference (DASC)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129004062","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":"Worst frame backlog estimation in an avionics full-duplex switched ethernet end-system","authors":"Yohan Baga, Fakhreddine Ghaffari, E. Zante, Michael Nahmiyace, D. Declercq","doi":"10.1109/DASC.2016.7777990","DOIUrl":"https://doi.org/10.1109/DASC.2016.7777990","url":null,"abstract":"With the increase of needs in capability, bandwidth and reliability of modern aeronautical equipment, Avionics Full-Duplex Switched Ethernet (AFDX) network has gained in popularity since its successful implementation in the Airbus A380. As AFDX networkis a deterministic network, frames have to reach the reception End-System (ES) within a limited amount of time: the upper bound of the end-to-end delay. Similarly, a frame arriving at the reception ES has to be processed within a deterministic amount of time to be available to host applications. The duration of frame storage in the ES reception buffer represents a significant part of delays. Optimizing the size of the ES reception buffer is then a critical issue, which requires a precise analysis of the Worst Frame Backlog (WFB). This is the issue that we address in this paper. We propose in particular a method to construct the longest sequence of back-to-back frames from a regular reception flow and a simulation tool to estimate the WFB that helps to determine the size of the ES reception buffer for any configuration.","PeriodicalId":340472,"journal":{"name":"2016 IEEE/AIAA 35th Digital Avionics Systems Conference (DASC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127883275","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":"Flight dynamics and surveillance equipment simulation for trajectory based operation in unmanned aerial systems","authors":"M. Moallemi, J. Clifford, J. Neighbors, R. Rashedi, J. Pesce, Massood Towhidnejad","doi":"10.1109/DASC.2016.7778002","DOIUrl":"https://doi.org/10.1109/DASC.2016.7778002","url":null,"abstract":"This paper presents a Research and Development (R&D) effort to design and develop a flight simulation system with Adaptive Surveillance Broadcast (ADS-B), and Traffic Collision Avoidance System (TCAS), for integration of Unmanned Aerial Systems (UAS) into National Airspace System (NAS). The paper will delineate the design and development of the Next Generation Applied Research (NEAR) Lab's FMS (NEAR-FMS) including the UAS aircraft models, and the surveillance simulation equipment. The NEAR-FMS will be used in NextGen projects such as Four-Dimensional Trajectory 4DT operations, as well as Alliance for System Safety of UAS through Research Excellence (ASSURE) projects funded by Federal Aviation Association (FAA). Middle-fidelity Flight Dynamic Models (FDM) of two UASs, a Predator class and a Global Hawk have been designed and tested on JSBSim aerodynamic simulator. Autopilots have been designed and implemented for both UAS FDMs. The paper will present the results of tests on the UAS simulated flights and performance data. The UAS models will be used to test the criticality of the conventional surveillance equipment of the UASs as well as identifying the requirements of these systems for such aircraft. Finally, the assessment of the data generated by the simulated flights will drive the requirements and constraints on the conventional surveillance equipment on the UAS. This project is a work in progress and the detailed results will be published in future publications.","PeriodicalId":340472,"journal":{"name":"2016 IEEE/AIAA 35th Digital Avionics Systems Conference (DASC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120962111","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}