Cruciform antenna comprising linear sub-antennas and associated processing
First Claim
1. An antenna comprising:
- a first and a second linear sub-antenna;
each having a plurality of sensors arranged so as to form first and second line portions, respectively, with each sensor generating a basic signal;
wherein the angle between 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°
;
an antenna processing device forming a plurality of combined signals for each line portion, which signal is a combination of basic signals from the sensors of this line portion;
a signal processing device generating useful combined signals by filtering the noise of the combined signals coming from each line portion;
a device for calculating normalized correlation coefficients between the useful combined signals of the first line portion and the useful combined signals of the second line portion;
a device generating a detection signal when a normalised correlation coefficient exceeds a detection threshold.
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Accused Products
Abstract
The invention relates to a cross antenna comprising linear sub-antennas and to the associated processing. More specifically, the invention relates to an antenna (1) comprising: first (2) and second (3) linear sub-antennas which are equipped with sensors (21-2M, 31-3N) forming first and second line segments and generating a basic signal (Si′, Gj′), the angle between the respective directional vectors of the first and second tangents to the midpoint respectively of the first and second line segments being between 30° and 150°; an antenna processing device (4, 5) forming combined signals (VSi, VGj); a signal-processing device (6, 7) generating combined useful signals (TSi, TGj); a device (8) for calculating the correlation coefficients ([Cij]) between the combined useful signals; and a device (8) for generating a detection signal ([Rij]) when a correlation coefficient exceeds a threshold. The invention can be used, for example, to obtain an antenna having fewer sensors for an equivalent performance level.
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Citations
13 Claims
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1. An antenna comprising:
a first and a second linear sub-antenna;
each having a plurality of sensors arranged so as to form first and second line portions, respectively, with each sensor generating a basic signal;
wherein the angle between 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°
;
an antenna processing device forming a plurality of combined signals for each line portion, which signal is a combination of basic signals from the sensors of this line portion;
a signal processing device generating useful combined signals by filtering the noise of the combined signals coming from each line portion;
a device for calculating normalized correlation coefficients between the useful combined signals of the first line portion and the useful combined signals of the second line portion;
a device generating a detection signal when a normalised correlation coefficient exceeds a detection threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
Specification