Abstract: The present invention relates to a method for exchanging data between drones of a drone swarm comprising at least four drones, the method comprising: emitting, by each drone, a signal comprising data to be emitted comprising the identifier of the drone, the direction and the identifier of each signal received at the preceding moment by the drone, receiving, by a drone, called receiver drone, the signal emitted by another drone of the swarm, determining, by the receiver drone, the direction of each received signal, and determining, by the receiver drone, for each received signal, the relative position of the drone corresponding to the identifier of the received signal.

Abstract: The present invention relates to a method for assisting in the detection of elements in an environment, comprising: the acquisition of a first wide-field image of an environment by a first sensor (14A) having a first field of view and a first resolution, the generation of a fused image from first narrow-field images of the environment acquired by a second sensor (14B) having a second field of view strictly less than the first field of view and a second resolution finer than the first resolution, In response to the detection of a difference relating to an element on a second wide-field image acquired by the first sensor (14A), compared to the first wide-field image, the acquisition of a second narrow-field image imaging the difference, and the update the fused image with the second narrow-field image.

Abstract: The present invention relates to an optical pulse detection device, the device comprising a sensor having a plurality of pixels, each pixel comprising: a receiver configured to receive optical pulses and generate an electrical signal, an event detection unit comprising a frequency filter having an adjustable cut-off frequency defining a passband for the event detection unit, the adjustable cut-off frequency being such that the upper bound of the passband is greater than or equal to 1 Megahertz, the detection unit being configured to detect variations in the electrical signal generated by the receiver only when the frequency in the frequency domain of said variations is within the passband of the event detection unit, and a timing unit configured to date each change in the electrical signal detected by the event detection unit.

Abstract: The present invention relates to a method for assisting in the detection of elements in an environment, comprising: the acquisition of a first wide-field image of an environment by a first sensor (14A) having a first field of view and a first resolution, the generation of a fused image from first narrow-field images of the environment acquired by a second sensor (14B) having a second field of view strictly less than the first field of view and a second resolution finer than the first resolution, In response to the detection of a difference relating to an element on a second wide-field image acquired by the first sensor (14A), compared to the first wide-field image, the acquisition of a second narrow-field image imaging the difference, and the update the fused image with the second narrow-field image.

Abstract: The present invention relates to an optical pulse detection device, the device comprising a sensor having a plurality of pixels, each pixel comprising: a receiver configured to receive optical pulses and generate an electrical signal, an event detection unit comprising a frequency filter having an adjustable cut-off frequency defining a passband for the event detection unit, the adjustable cut-off frequency being such that the upper bound of the passband is greater than or equal to 1 Megahertz, the detection unit being configured to detect variations in the electrical signal generated by the receiver only when the frequency in the frequency domain of said variations is within the passband of the event detection unit, and a timing unit configured to date each change in the electrical signal detected by the event detection unit.

Abstract: The present invention relates to a method for exchanging data between drones of a drone swarm comprising at least four drones, the method comprising: emitting, by each drone, a signal comprising data to be emitted comprising the identifier of the drone, the direction and the identifier of each signal received at the preceding moment by the drone, receiving, by a drone, called receiver drone, the signal emitted by another drone of the swarm, determining, by the receiver drone, the direction of each received signal, and determining, by the receiver drone, for each received signal, the relative position of the drone corresponding to the identifier of the received signal.

Abstract: The present invention relates to an infrared imager suitable for detecting an infrared flux in a first and a second spectral band, the imager comprising an enclosure and comprising: a separator separating an incident infrared flux into two fluxes, a single detector suitable for detecting a flux in the two spectral bands, the detector being cooled to a temperature lower than the temperature of the enclosure, a switching optic movable between a first position in which the first flux is sent to the detector and a second position in which the second flux is sent to the detector, and a reflector having a bottom positioned in order that the image of the bottom in the first spectral band by the switching optic in the second position is situated on detector.

Abstract: The present invention relates to an infrared imager suitable for detecting an infrared flux in a first and a second spectral band, the imager comprising an enclosure and comprising: a separator separating an incident infrared flux into two fluxes, a single detector suitable for detecting a flux in the two spectral bands, the detector being cooled to a temperature lower than the temperature of the enclosure, a switching optic movable between a first position in which the first flux is sent to the detector and a second position in which the second flux is sent to the detector, and a reflector having a bottom positioned in order that the image of the bottom in the first spectral band by the switching optic in the second position is situated on the detector.

Abstract: An airborne optronic equipment item comprises: at least one image sensor suitable for acquiring a plurality of images of a region flown over by a carrier of the equipment item; and a data processor configured or programmed to receive at least one acquired image and transmit it to a display device; wherein the data processor is also configured or programmed to: access a database of images of the region flown over; extract from the database information to synthesize a virtual image of the region which would be seen by an observer situated at a predefined observation point and looking, with a predefined field of view, along a predefined line of sight; synthesize the virtual image; and transmit it to a display device. A method for using such an equipment item is provided.

Abstract: A system for acquiring images in color and near-infrared, comprising: a matrix sensor, which comprises first, second, and third types of pixels sensitive to respective visible colors and a fourth type of panchromatic pixels sensitive in the near-infrared; and a signal processing circuit configured to reconstruct first and second sets of monochromatic images, a panchromatic image, a color image from the images of the first set and from the panchromatic image, and at least one image in the near-infrared from the images of the second set and from the panchromatic image. A visible-near-infrared bispectral camera comprises such an acquisition system and method implemented by means of such a camera.

Abstract: An optronic vision apparatus with which a land vehicle is intended to be equipped, includes a panoramic image sensor, at least one orientable camera, having a better resolution in a field of view that is smaller than the field of view of the panoramic image sensor, and an image-displaying device; wherein it also comprises a data processor that is configured or programmed to: receive at least one first image from the panoramic image sensor and one second image from the orientable camera; from the first and second images, synthesize a composite image in which at least one section of the second image is embedded in a section of the first image; and transmit the composite image to the image-displaying device. An armored vehicle equipped with such an optronic vision apparatus. A method by such an optronic apparatus is provided.

Abstract: A fuze for detecting an obstacle in proximity, an obstacle in proximity defined as being an obstacle exhibiting a minimum distance from the fuze, wherein the fuze comprises at least: an emission device emitting a light beam directed forward of the fuze; a reception device detecting the luminous fluxes in a cone directed forward of the fuze, the light beam and the cone having relative orientations such that they cross one another; a detection volume being the volume where the light beam crosses the cone so that when an obstacle is in the detection volume, the light emitted by the emission device is backscattered toward the detection device, an obstacle in proximity being detected by detecting the maximum of backscattered power, the reception cone is centered on the axis of the fuze.

Abstract: A system for simultaneously acquiring images in color and in the near-infrared comprising a single matrix sensor comprises a first, second and third type of pixels sensitive to respective visible colors and a fourth type of panchromatic pixel, these pixels being also sensitive in the near-infrared; and a signal processing circuit configured to: reconstruct a first set of monochromatic images from signals generated by the pixels of the first, second and third type, respectively; reconstruct a panchromatic image from signals generated by the pixels of the fourth type; reconstruct a second set of monochromatic images from signals generated by the pixels of the first, second and third types, and from the panchromatic image; reconstruct an image in colors from the images of the first set and from the panchromatic image, and reconstruct at least one image in the near-infrared from the images of the second set and from the panchromatic image.

Abstract: A panoramic device for detection of laser pulses is provided, sensitive to at least two wavelengths and including a plurality of optical channels and a set of linear sensor arrays, each linear sensor array including a photosensitive area. Each optical channel includes at least two linear sensor arrays, the respective photosensitive areas of said at least two linear sensor arrays being non-contiguous, so that said at least two linear sensor arrays of each optical channel observe non-contiguous angular fields. Moreover, the optical channels are optically juxtaposed to obtain a continuous angular field of surveillance.

Abstract: An airborne optronic equipment item comprises: at least one image sensor suitable for acquiring a plurality of images of a region flown over by a carrier of the equipment item; and a data processor configured or programmed to receive at least one acquired image and transmit it to a display device; wherein the data processor is also configured or programmed to: access a database of images of the region flown over; extract from the database information to synthesize a virtual image of the region which would be seen by an observer situated at a predefined observation point and looking, with a predefined field of view, along a predefined line of sight; synthesize the virtual image; and transmit it to a display device. A method for using such an equipment item is provided.

Abstract: A fuze for detecting an obstacle in proximity, an obstacle in proximity defined as being an obstacle exhibiting a minimum distance from the fuze, wherein the fuze comprises at least: an emission device emitting a light beam directed forward of the fuze; a reception device detecting the luminous fluxes in a cone directed forward of the fuze, the light beam and the cone having relative orientations such that they cross one another; a detection volume being the volume where the light beam crosses the cone so that when an obstacle is in the detection volume, the light emitted by the emission device is backscattered toward the detection device, an obstacle in proximity being detected by detecting the maximum of backscattered power, the reception cone is centered on the axis of the fuze.

Abstract: A method for detecting a stream of electromagnetic pulses emitted, according to a predefined occurrence law, in a scene observed using a detection system comprising a matrix detector and a processing unit for processing signals comprising the electromagnetic pulses. The method includes the following steps: acquiring and transmitting the signals from the matrix detector to the processing unit, and for each pixel of the detector calculating a subtraction signal between two signals acquired during two consecutive time windows of the same length, calculating a signal for accumulating the subtraction signals spaced apart in time by an interval defined by the predefined occurrence law, and thresholding the accumulation signal, the pulse being detected if the accumulation signal is greater than a predetermined threshold for at least one pixel, and locating the pulse detected in the observed scene from the coordinates of the pixel including the detected pulse.

Abstract: The invention relates to a method of telemetry of a target performed by an operator by means of binoculars which comprise an image sensor, a display screen, a processing unit and a laser telemeter exhibiting a firing window centered on the sighting axis of the laser.

Abstract: A method for detecting a stream of electromagnetic pulses emitted, according to a predefined occurrence law, in a scene observed using a detection system comprising a matrix detector and a processing unit for processing signals comprising the electromagnetic pulses. The method includes the following steps: acquiring and transmitting the signals from the matrix detector to the processing unit, and for each pixel of the detector calculating a subtraction signal between two signals acquired during two consecutive time windows of the same length, calculating a signal for accumulating the subtraction signals spaced apart in time by an interval defined by the predefined occurrence law, and thresholding the accumulation signal, the pulse being detected if the accumulation signal is greater than a predetermined threshold for at least one pixel, and locating the pulse detected in the observed scene from the coordinates of the pixel including the detected pulse.

Abstract: A panoramic device for detection of laser pulses is provided, sensitive to at least two wavelengths and including a plurality of optical channels and a set of linear sensor arrays, each linear sensor array including a photosensitive area. Each optical channel includes at least two linear sensor arrays, the respective photosensitive areas of said at least two linear sensor arrays being non-contiguous, so that said at least two linear sensor arrays of each optical channel observe non-contiguous angular fields. Moreover, the optical channels are optically juxtaposed to obtain a continuous angular field of surveillance.