This paper considers the problem of estimating the three-dimensional states of a salvo of thrusting/ballistic endo-atmospheric objects using two-dimensional (2-D) Cartesian measurements from the focal plane array (FPA) of a single fixed optical sensor. Since the initial separations in the FP are smaller than the resolution of the sensor, there are merged FP measurements, compounding the usual false-alarm and missed-detection uncertainty. We present a two-step methodology. First, we assume a Wiener process acceleration model for the motion of the images of the objects in the optical sensor's FPA. We model the merged measurements with increased variance, and thence employ a multi-Bernoulli (MB) filter using the 2-D measurements in the FPA. Second, using the set of associated measurements for each confirmed MB track, we formulate a parameter estimation problem, whose maximum likelihood solution can be obtained via numerical search and can be used for impact point prediction. Simulation results illustrate the performance of the proposed method.


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    Titel :

    Tracking Initially Unresolved Thrusting Objects Using an Optical Sensor


    Beteiligte:
    Qin Lu (Autor:in) / Bar-Shalom, Yaakov (Autor:in) / Willett, Peter (Autor:in) / Ben-Dov, Ronen (Autor:in) / Milgrom, Benny (Autor:in) / Granstrom, Karl (Autor:in)


    Erscheinungsdatum :

    01.04.2018


    Format / Umfang :

    1029662 byte




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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