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Cruciform Antenna Comprising Linear Sub-Antennas and Associated Processing for Airborne Radar

  • US 20080291096A1
  • Filed: 05/12/2006
  • Published: 11/27/2008
  • Est. Priority Date: 05/16/2005
  • Status: Abandoned Application
First Claim
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1. Antenna (1) characterized in that it includes:

  • a first (2) and a second (3) linear sub-antenna;

    each having a plurality of electromagnetic sensors (21-2M, 31-3N) arranged so as to form first and second line portions, respectively, with each sensor generating a basic signal (Si′

    , Gj′

    );

    wherein the angle between the respective directional vectors of the first and second tangents to the midpoint respectively of the first and second line portions is between 30° and

    150°

    ;

    a device for transmitting an electromagnetic signal at a frequency equal to at least 10 GHz;

    an antenna processing device (4, 5) forming a plurality of combined signals (VSi, VGj) for each line portion, which signal is a combination of basic signals of the sensors of this line portion;

    a signal processing device (6, 7) generating combined signals (TSi, TGj) useful for filtering the noise of the combined signals coming from each line portion;

    a device (8) for calculating the correlation coefficients ([Cij]) between the useful combined signals of the first line portion and the useful combined signals of the second line portion;

    a device (8) generating a detection signal ([Rij]) when a correlation coefficient exceeds a predetermined threshold.

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