The forthcoming German TanDEM-X mission is well suited to demonstrate the potential of Ground Moving Target Indication from space. The combination of long and short along-track baselines of the TanDEM-X constellation promises significant moving target detection performance. The superior sensitivity of the employed TerraSAR X-band instruments enhances achievable detection probability. A GMTI mode has been proposed for use with this constellation which is based on at least two coherent looks, taken of the target under slightly different aspect angles, and making use of the flexibility of phased array antennas. This scheme in many cases allows to measure both the radial and the parallel target velocities. The GMTI performance of this configuration has been analyzed using a computer model. Results show that MDV is very low. A GMTI mode with two looks is proposed in order to obtain a full target velocity vector and to detect targets with arbitrary direction of motion. At an incidence angle of 45 deg of angle and subject to a false alarm rate of 1%, a probability of about 80% has been predicted for detecting an object with RCS = 20 m2 moving linearly in arbitrary direction and at arbitrary speed <= 18 km/h.


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    Titel :

    An experimental GMTI mode for TanDEM-X


    Weitere Titelangaben:

    Ein experimenteller GMTI-Modus für TanDEM-X


    Beteiligte:


    Erscheinungsdatum :

    2009


    Format / Umfang :

    5 Seiten, 4 Bilder, 5 Quellen


    Anmerkungen:

    (nicht paginiert)


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Datenträger


    Sprache :

    Englisch




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