A 3D target structure along with a coordinate system transformation will enable a high-resolution ground-based radar looking up at a target or an airborne radar looking down on a target to perform target recognition at all azimuth and elevation or look-down angles. Target dimensions such as length, width, and height are characterized by a three-dimensional surface as a function of azimuth and elevation angles. Target signatures for transmitted pulses with beta time variation are obtained as a function of target extent, azimuth, and elevation or look-down angles. An average range resolution is defined to accommodate the large variation in range resolution with target orientation. Target recognition based on target shape can distinguish airplane targets with a variable structure, though the database may not contain a matched sample target signature to the observed one. A distributed ground clutter model has been analyzed to obtain ground clutter variations with azimuth and elevation angles. In addition, the peak magnitude of clutter-to-signal ratio has been determined for a clutter area with a varying number of point scatterers. The analysis and target recognition of a radar receiver consisting of a sliding correlator to suppress noise followed by a three-pulse canceller to eliminate clutter has been carried out in terms of input target signatures.


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    Title :

    High-resolution nonsinusoidal radars with three-dimensional target structure


    Additional title:

    Hochauflösendes nicht sinusoidales Radar mit dreidimensionaler Zielstruktur


    Contributors:


    Publication date :

    1994


    Size :

    13 Seiten, 14 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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