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Träfflista för sökning "WFRF:(Åström Karl) "

Sökning: WFRF:(Åström Karl)

  • Resultat 61-70 av 873
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61.
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63.
  • Batstone, Kenneth John, et al. (författare)
  • Robust Time-of-Arrival Self Calibration with Missing Data and Outliers
  • 2016
  • Ingår i: 2016 24th European Signal Processing Conference (EUSIPCO). - 9780992862657 ; , s. 2370-2374
  • Konferensbidrag (refereegranskat)abstract
    • The problem of estimating receiver-sender node positionsfrom measured receiver-sender distances is a key issue indifferent applications such as microphone array calibration, radioantenna array calibration, mapping and positioning using ultrawidebandand mapping and positioning using round-trip-timemeasurements between mobile phones and Wi-Fi-units. Thanks torecent research in this area we have an increased understandingof the geometry of this problem. In this paper, we study theproblem of missing information and the presence of outliers inthe data. We propose a novel hypothesis and test frameworkthat efficiently finds initial estimates of the unknown parametersand combine such methods with optimization techniques toobtain accurate and robust systems. The proposed systems areevaluated against current state-of-the-art methods on a large setof benchmark tests. This is evaluated further on Wi-Fi roundtriptime and ultra-wideband measurements to give a realisticexample of self calibration for indoor localization.
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64.
  • Batstone, Kenneth John, et al. (författare)
  • Towards Real-time Time-of-Arrival Self-Calibration using Ultra-Wideband Anchors
  • 2017
  • Ingår i: International Conference on Indoor Positioning and Indoor Navigation (IPIN), 2017.
  • Konferensbidrag (refereegranskat)abstract
    • Indoor localisation is a currently a key issue, from robotics to the Internet of Things. With hardware advancements making Ultra-Wideband devices more accurate and low powered (potentially even passive), this unlocks the potential of having such devices in common place around factories and homes, enabling an alternative method of navigation. Therefore, anchor calibration indoors becomes a key problem in order to implement these devices efficiently and effectively. In this paper, we study the possibility for sequentially gathering Ultra-Wideband Time-of-Arrival measurements and using previously studied robust solvers, merge solutions together in order to calculate anchor positions in 3D in real-time. Here it is assumed that there is no prior knowledge of the anchor positions. This is then validated using Ultra-Wideband Time-of-Arrival data gathered by a Bitcraze Crazyflie quadcopter in 2D motion, 3D motion and full flight.
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65.
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66.
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67.
  • Bellman, R., et al. (författare)
  • On Structural Identifiability
  • 1970
  • Ingår i: Mathematical Biosciences. - 0025-5564. ; 7, s. 329-339
  • Tidskriftsartikel (refereegranskat)abstract
    • In this article we introduce a new concept, structural identifiability, which plays a central role in identification problems. The concept is useful when answering questions such as: To what extent is it possible to get insight into the internal structure of a system from input-output measurements? What experiments are necessary in order to determine the internal couplings uniquely? The definition of the concept of an identifiable structure is given. Criteria as well as certain identifiable structures are discussed. Particular emphasis is given to compartmental models.
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68.
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70.
  • Benveniste, Albert, et al. (författare)
  • Meeting the Challenge of Computer Science in the Industrial Applications of Control: An Introductory Discussion to the Special Issue
  • 1993
  • Ingår i: IEEE Transactions on Automatic Control. - : Institute of Electrical and Electronics Engineers (IEEE). - 0018-9286. ; 38:7, s. 1004-1010
  • Tidskriftsartikel (refereegranskat)abstract
    • The motivations, objectives, and results of the project tilted Facing the Challenge of Computer Science in the Industrial Applications of Control, which was launched by the IEEE Control Systems Society and the IFAC Committee on Theory, are presented. Potential alternatives for reducing costs in control industries at those points where they are most significant, control paradigms beyond traditional control science, and the ways in which control engineering should be taught are reviewed
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