LEARNING METHOD FOR A NEURAL NETWORK EMBEDDED IN AN AIRCRAFT FOR ASSISTING IN THE LANDING OF SAID AIRCRAFT AND SERVER FOR IMPLEMENTING SUCH A METHOD

    公开(公告)号:US20200168111A1

    公开(公告)日:2020-05-28

    申请号:US16691031

    申请日:2019-11-21

    Applicant: THALES

    Abstract: The method uses a fleet of aircraft being equipped with at least one radar sensor, it includes at least: a step of collective collection of radar images by a set of aircraft (A1, . . . AN) of the fleet, the radar images being obtained by the radar sensors of the aircraft (A1, . . . AN) in nominal landing phases on the runway, a step wherein each image collected by an aircraft is labelled with at least information on the position of the runway relative to the aircraft, the labelled image being sent to a shared database and stored in the database; a step of learning by a neural network of the runway from the labelled images stored in the shared database, at the end of the step the neural network being trained; a step of sending of the trained neural network to at least one of the aircraft (A1).

    GUIDANCE SYSTEM FOR LEADING AN AIRCRAFT TO A REFERENCE POINT; ASSOCIATED GUIDANCE METHOD

    公开(公告)号:US20220413128A1

    公开(公告)日:2022-12-29

    申请号:US17779469

    申请日:2020-11-26

    Applicant: THALES

    Abstract: The invention relates to a guidance system for leading an aircraft to a reference point, characterised in that it comprises: An active beacon capable of emitting a first electromagnetic signal in a first emission cone, defined by an apex coinciding with the reference point, a first beam angle and a first axis corresponding to an emission direction; and a multi-beam radar, installed on board the aircraft, operating in reception mode and capable of performing deviation measurements on a signal received from the active beacon, the multi-beam radar comprising an antenna adapted for receiving in at least two spatially separate reception cones.

    DEVICE FOR CALCULATING AN ANALOG FOURIER TRANSFORM

    公开(公告)号:US20220004595A1

    公开(公告)日:2022-01-06

    申请号:US17291258

    申请日:2019-11-08

    Applicant: THALES

    Abstract: The device transforms an analog input signal with N components x(0), x(1) . . . x(N−1) into an output signal with N components X(0), X(1) . . . X(N−1) functions of said components x(0), x(1) . . . x(N−1), said device comprising basic addition and/or subtraction cells linked in a butterfly-type architecture to perform said functions, each basic cell comprising an operator performing a conditional division by two of the result of the addition operation or subtraction operation performed, the condition being the saturation of said operator.

    METHOD OF HIGH-RESOLUTION DISTANCE PROCESSING

    公开(公告)号:US20200041642A1

    公开(公告)日:2020-02-06

    申请号:US16528219

    申请日:2019-07-31

    Applicant: THALES

    Abstract: The method carries out a measurement of the distance from the ground of an aircraft by undertaking the emission of waveforms making it possible to obtain, after demodulation, of the signals received in return and sampling of the demodulated signals at a frequency Féch, two signals E0*(t) and E1*(t), taking the form of two frequency ramps, of respective slopes K0 and K1, of respective passbands B0 and B1 and of respective durations TE0 and TE1, the N-point FFT spectral analysis of which is carried out. The values of the durations TE0 and TE1 as well as those of the passbands B0 and B1, are defined in such a way as to be able to determine, on the basis of the spectra of the signals E0*(t) and E1*(t), a measurement of non-ambiguous distance d1 covering the maximum distance dmax to be instrumented and an ambiguous distance d0 exhibiting the desired distance resolution. The distance d to be measured being determined by combining these two measurements.

    PROXIMITY RADAR METHOD AND SYSTEM FOR A ROTARY-WING AIRCRAFT

    公开(公告)号:US20200256983A1

    公开(公告)日:2020-08-13

    申请号:US16708194

    申请日:2019-12-09

    Applicant: THALES

    Abstract: A proximity radar method for a rotary-wing aircraft includes a sequence of phases T(k) of steps. In a first phase T(1), the electronic computer of the radar system computes unambiguous synthetic patterns on the basis of a first activated interferometric pattern M(1) of N unitary radiating groups. In the following phases T(k) of steps, executed successively in increasing order of k, the electronic computer computes synthetic patterns on the basis of interferometric patterns M(k) of rank k, wherein the N unitary radiating groups of a series deviate simultaneously in terms of azimuth and in terms of elevation as k increases, and establishes maps of rank k of the surroundings in terms of azimuth distance/direction and/or elevation distance/direction cells wherein the detected obstacle ambiguities, associated with the network lobes, are removed by virtue of the map(s) provided in the preceding phase or phases.

    DEVICE AND METHOD FOR LANDING ASSISTANCE FOR AN AIRCRAFT IN CONDITIONS OF REDUCED VISIBILITY

    公开(公告)号:US20200168112A1

    公开(公告)日:2020-05-28

    申请号:US16691046

    申请日:2019-11-21

    Applicant: THALES

    Abstract: With the device detecting and positioning the runway with respect to the aircraft, it includes at least: a radar sensor; a radar image collection system, collecting and tagging images acquired by radar sensors carried by aircraft during phases of landing on the runway under nominal conditions, the tagging of an image giving information about the positioning of the runway with respect to the aircraft carrying the sensor capturing the image; a neural network trained on the basis of the images that are tagged and collected during landings on the runway under nominal conditions, the network estimating the position of the runway with respect to the aircraft by virtue of the radar images acquired by the sensor during the current landing; a functional block utilizing and formatting the data about the positioning of the runway with respect to the aircraft and coming from the neural network in order to format the data in an adapted interface.

    METHOD FOR CREATING A LEAST ONE VIRTUAL RECEPTION CHANNEL USING A RADAR ANTENNA AND RADAR SYSTEM

    公开(公告)号:US20200158847A1

    公开(公告)日:2020-05-21

    申请号:US16685585

    申请日:2019-11-15

    Applicant: THALES

    Abstract: A method for creating a virtual reception channel in a radar system includes an antenna possessing two physical reception channels (1r, 2r) spaced apart by a distance d in a direction x, two emission channels (1e, 2e) spaced apart by the same distance d in the same direction x and processing means, the method comprising: dynamically selecting two different waveforms, the waveforms being orthogonal to each other; generating a radar pulse of given central wavelength in each emission channel, each of the emission channels emitting one of the two different waveforms; acquiring with the reception channels echoes due to pulses emitted by the emission channels and reflected by at least one target; compressing the pulses by matched filtering of the echoes acquired by each physical reception channel, this involving correlating them with each of the waveforms generated in the emission channel; and repeating steps a) to c) while randomly changing one of the values of each of the phase codes associated with the generated waveforms until the level of the sidelobes of all the compressed pulses has stabilized; and radar system for implementing such a method.

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