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Auflistung nach Autor:in "Loffeld, Otmar"

1 - 2 von 2
  • Konferenzbeitrag
    Autonomous tracking of space objects with the FGAN tracking and imaging radar
    (INFORMATIK 2006 – Informatik für Menschen, Band 1, 2006) Ruiz, Guillermo; Patzelt, Thomas; Leushacke, Ludger; Loffeld, Otmar
    This paper presents the first progress made at FGAN/FHR-RWA towards the development of a robust autonomous method for the tracking of space objects with the Tracking and Imaging Radar (TIRA). For the acquisition phase an algorithm based on a Least-Squares Estimation of the state vector and f and g series will be presented and tested. For the tracking phase the suitability of the Extended Kalman Filter in mixed coordinates (EKF) and of the Piecewise-Constant Acceleration Converted Measurements Kalman Filter (PCA-CMKF) will be evaluated.
  • Konferenzbeitrag
    PCRB for positioning in GSM networks
    (INFORMATIK 2006 – Informatik für Menschen, Band 1, 2006) Zhang, Miao; Knedlik, Stefan; Loffeld, Otmar
    The posterior Cramér-Rao lower bound (PCRB) for estimating the position and velocity of a Mobile Station (MS) by integrating two different kinds of measurement from GSM networks, Timing Advance (TA) and Received Signal Strength (RSS), is derived. The bound shows that theoretically the data fusion approach yields better accuracy than using a single kind of measurement. The performance of an extended Kalman filter (EKF) is compared with the PCRB.