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).

    RADAR IMAGING METHOD, AND RADAR USING SUCH A METHOD

    公开(公告)号:US20230194698A1

    公开(公告)日:2023-06-22

    申请号:US17920718

    申请日:2021-04-16

    Applicant: THALES

    CPC classification number: G01S13/89 G01S7/356 G01S13/584 G01S7/354

    Abstract: An imaging method using a doppler radar wherein the pointing direction in transmission (dei) is modified from recurrence to recurrence; each detection block of duration T comprises a periodic repetition of a number C of pointing cycles, each of these cycles comprising a number P of recurrences, the set of these P recurrences covering the De pointing directions (dei) of the set; the order of the pointings is modified in a pseudo-random manner from pointing cycle to pointing cycle during a same detection block so as to create an irregular time interval between two pointings in a same direction; at least one beam is formed in reception on each recurrence in a direction included in the transmission-focused angular domain in the pointing direction corresponding to the recurrence.

    RADAR IMAGING METHOD, AND RADAR IMPLEMENTING SUCH A METHOD

    公开(公告)号:US20220390592A1

    公开(公告)日:2022-12-08

    申请号:US17762370

    申请日:2020-09-24

    Applicant: THALES

    Abstract: A radar imaging method using an active antenna comprising N transmission channels and M reception channels, transmitting in bursts of pointing cycles, is disclosed. The antenna covers a given angular range during a detection time unit of duration T, said time unit corresponds to a burst in which the N transmission channels are focused successively in a number De of pointing directions (di) such that: the pointing direction on transmission (di) is modified from recurrence to recurrence; each time unit of duration T comprising a periodic repetition of a number C of identical pointing cycles, each of these cycles comprising a number P of recurrences, the set of these P recurrences covers the De pointing directions (di); at least one beam is formed in reception on each recurrence in a direction included in the angular range focused on transmission in the pointing direction corresponding to said recurrence.

    MULTIPLE-INPUT MULTIPLE-OUTPUT IMAGING RADAR SYSTEM

    公开(公告)号:US20220146657A1

    公开(公告)日:2022-05-12

    申请号:US17525851

    申请日:2021-11-12

    Applicant: THALES

    Abstract: The invention relates to a MIMO imaging radar system. The system comprises transmission channels (Ve1, VeM), reception channels (Vr1, VrN), and co-located radiating elements (ERe1, EReM, ERr1, ERrN) forming a two-dimensional antenna array. Each radiating element (ERe1, EReM, ERr1, ERrN) has a predefined instantaneous field of coverage. Each radiating element is formed by a plurality of p radiating sub-elements (SeElt1, SsEltp) distributed in at least one of the two dimensions of the antenna array. The radar comprises a plurality of electronic steering modules (MDe1, . . . , MDrN). Each electronic steering module is connected to one radiating element. Each steering module is configured to apply a steering command (Cmd) between all the radiating sub-elements (SeElt1, SsEltp) of a given radiating element. The steering command (Cmd) is identical from one radiating element to the next, so as to move the field of coverage of each radiating element in the same direction.

    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.

    MULTIBEAM FMCW RADAR, IN PARTICULAR FOR AUTOMOBILE

    公开(公告)号:US20180120427A1

    公开(公告)日:2018-05-03

    申请号:US15792700

    申请日:2017-10-24

    Applicant: THALES

    Abstract: A radar comprises at least one array antenna composed of transmit sub-arrays and of receive sub-arrays, a transmit and receive system and processing means: the distribution of the transmit sub-arrays and receive sub-arrays is symmetric both with respect to a vertical axis and a horizontal axis; at least two transmit sub-arrays symmetric with respect to the vertical axis are the largest possible distance apart; at least two transmit sub-arrays symmetric with respect to the horizontal axis are the largest possible distance apart; at least two receive sub-arrays symmetric with respect to the vertical axis are the largest possible distance apart; at least two receive sub-arrays symmetric with respect to the horizontal axis are the largest possible distance apart; a first coding of the wave transmitted by the transmit sub-arrays carried out by frequency shifting of the ramps between the various transmit sub-arrays; a second coding of the wave transmitted by the transmit sub-arrays carried out by phase modulation from frequency ramp to frequency ramp between the various transmit sub-arrays.

    MULTI-RESOLUTION FMCW RADAR DETECTION METHOD AND RADAR IMPLEMENTING SUCH A METHOD

    公开(公告)号:US20180045819A1

    公开(公告)日:2018-02-15

    申请号:US15649356

    申请日:2017-07-13

    Applicant: THALES

    Abstract: A detection method implementing an FMCW waveform is provided, the emitted waveform is formed of a recurring pattern of given period Tr covering an emission frequency band of given width B, each pattern being divided into a given number P of sub-patterns of duration Tr/P covering an excursion frequency band ΔF=B/P, the sub-patterns being mutually spaced by a frequency interval equal to ΔF. The radar performs: a first distance-compression processing operation carrying out a low-resolution distance compression at the scale of each recurring pattern on a fraction B/P of the emission band of width B corresponding to the frequency band covered by each of the sub-patterns; a Doppler processing operation on a given number N of successive recurrences so as to form P ambiguous distance-Doppler maps of low distance resolution, the maps being segmented into various speed domains; a second distance-compression processing operation of resolution that differs depending on the speed domain to which the relative speed of the target with respect to the radar belongs.

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