公开(公告)号：US20220406202A1

公开(公告)日：2022-12-22

申请号：US17774781

申请日：2020-11-19

Applicant: THALES

Inventor： Rodolphe COTTRON ,  Jean-Philippe LEBRAT ,  Yoan VEYRAC

IPC: G08G5/02 ,  G08G5/00 ,  G01S13/933 ,  G01S13/89 ,  B64D45/08

Abstract: The present invention relates to a method for assisting the landing of an aircraft on a landing runway, the method comprising: detecting, by a radar, characteristic elements of the landing runway, determining the angular offset between the axis of the radar and the runway axis as a function of the coordinates of the characteristic elements detected, and determining, as a function of the angular offset determined and the coordinates of the characteristic elements detected: the distance of the orthogonal projection onto the runway axis from the horizontal projection of the radar, and the distance of the orthogonal projection onto the straight line passing through the runway threshold from the horizontal projection of the radar.

公开(公告)号：US20200150259A1

公开(公告)日：2020-05-14

申请号：US16673802

申请日：2019-11-04

Applicant: THALES

Inventor： Rodolphe COTTRON

IPC: G01S13/42 ,  H01Q3/04 ,  G01S7/40

Abstract: A method for optimizing the elevational pointing of an antenna of an airborne radar system at an altitude h includes an antenna and processing and calculation means, the method comprising: a. selecting an area of interest b. calculating atmospheric losses Lref at a reference altitude href at the reference range Dref and calculating a reference criterion Kref=−40 log10(Dref); c. for each possible elevational pointing distance of the antenna Dpt from the area of interest, calculating the antenna elevation S that makes it possible to target the distance Dpt via the centre of the antenna; d. for each distance D from the region of interest, calculating the angle θ at which the antenna observes the point of the ground at the distance D and calculating a criterion; 1. K(D)=Ge(θ)+Gr(θ)−40 log10D+Lref(href,Dref)−Latmo(h,D) 2. where Ge(θ),Gr(θ) are respectively the gains of the antenna that are normalized at emission and at reception; e. calculating all of the distances D that, for this pointing distance Dpt, satisfy the relationship K(D)>Kref so as to obtain the start and the end of the sub-swath actually able to be used by the radar system; and calculating the actually usable sub-swaths that are to be juxtaposed (A, B, C) in order to cover the whole of the area of interest without discontinuities.

公开(公告)号：US20240361450A1

公开(公告)日：2024-10-31

申请号：US18641349

申请日：2024-04-20

Applicant: THALES

Inventor： Adrien GILLIOT ,  Vincent CORRETJA ,  Nicolas LEGER ,  Alexandre QUINQUIS ,  Rodolphe COTTRON

IPC: G01S13/90

CPC classification number: G01S13/9011 ,  G01S13/9017 ,  G01S13/9043 ,  G01S13/9076

Abstract: A detection system includes a phased array antenna having unitary radiating elements, the system being suitable for, in each cycle, successively directing, by way of the successive application of a first and a second determined phase law to the electrical signals for supplying power to the array antenna, the antenna radiation towards a first target area (Z1), then a second target area (Z2), which is separate from the first target area (Z1), and determining an image of each target area (Z1) on the basis of the echoes received from each of the first and second target areas.

公开(公告)号：US20210132187A1

公开(公告)日：2021-05-06

申请号：US17084495

申请日：2020-10-29

Applicant: THALES

Inventor： Rodolphe COTTRON ,  Pascal CORNIC ,  Yoan VEYRAC

IPC: G01S7/288 ,  G01S13/58

Abstract: A method for processing coherent MIMO radar processing DDMA waveforms and includes NTX transmitters and NRX receivers, comprising the steps of a) generating waveforms on at most NTX transmitters, the waveforms, modulo the pulse repetition frequency Fr, being identical from one transmitter to the next, to within a phase ramp specific to each transmit path; b) generating, for at least one receiver, a Range-Doppler representation of the echoes of the transmitted waveforms, where, for each receiver, the echoes of a transmitter over a plurality of range cells occupy at least one frequency cell in the Doppler spectrum, called signal band, each signal band being specific to one of the transmitters, the placement of the signal bands in the Doppler spectrum being determined according to the phase ramp applied to each transmitter, the waveforms being generated so as to leave a portion of the Doppler spectrum between two signal bands unoccupied; c) identifying the transmitter corresponding to each signal band, on the basis of the Range-Doppler representation of the echoes of the transmitted waveforms. The method is particularly suitable for the millimetre band (W band), for automotive radar applications or applications of radar on board aeroplanes or drones, for the detection of fixed or moving target relative to the carrier.

公开(公告)号：US20230358883A1

公开(公告)日：2023-11-09

申请号：US18245236

申请日：2021-09-22

Applicant: THALES

Inventor： Jean-Philippe LEBRAT ,  Rodolphe COTTRON ,  Dominique BOUARD

IPC: G01S13/91 ,  G01S13/86 ,  G01S7/41

CPC classification number: G01S13/913 ,  G01S13/86 ,  G01S7/412 ,  G01S13/75

Abstract: A method of locating an aircraft in flight by means of a locating device including at least one sensor and a radar, the method including a first phase of determining a position of the aircraft, referred to as the first position, by means of the at least one sensor according to a signal supplied by the at least one sensor, a second phase of determining, at the same time as the first determination phase, a position of the aircraft, referred to as the second position, by means of the radar, and a phase of comparing data associated with the first position and data associated with the second position after which the first position is either validated or invalidated.

公开(公告)号：US20230213616A1

公开(公告)日：2023-07-06

申请号：US17777870

申请日：2020-11-26

Applicant: THALES

Inventor： Yoan VEYRAC ,  Richard MONTIGNY ,  Rodolphe COTTRON

IPC: G01S7/40

CPC classification number: G01S7/4026

Abstract: The invention relates to a system and a method for automatically harmonizing the position and/or orientation between an apparatus on board a mobile carrier and a reference frame of said mobile carrier, said mobile carrier being provided with an inertial unit able to provide measurements in the reference frame. The system comprises:



at least one accelerometer mechanically coupled to the onboard apparatus, and providing acceleration measurements in a reference frame referred to as the associated onboard apparatus,
a reception unit configured to receive measurements provided by said inertial unit and measurements provided by the accelerometer,
a computing unit configured to calculate values of parameters defining a geometric transformation for conversion of data from the reference frame of the carrier and the reference frame of the onboard apparatus, from the measurements, carried out for at least two different flight orientations, by said inertial unit and by said accelerometer.

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

Inventor： Pascal CORNIC ,  Renan LE GALL ,  Rodolphe COTTRON ,  Yoan VEYRAC

IPC: G01S13/89

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.

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

Inventor： Rodolphe COTTRON ,  Philippe GOY ,  Patrick GARREC

IPC: G01S13/28 ,  G01S13/30 ,  G01S13/24 ,  G01S13/87 ,  G01S13/90 ,  G01S13/93

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.

公开(公告)号：US20230009797A1

公开(公告)日：2023-01-12

申请号：US17782065

申请日：2020-12-03

Applicant: THALES

Inventor： Rodolphe COTTRON ,  Pascal CORNIC ,  Yoan VEYRAC

IPC: G01S13/88 ,  G01S13/933 ,  G01S13/95 ,  G01S13/91

Abstract: A method and a device for measuring altitude of an aircraft relative to a point on the ground, said aircraft carrying a radar system comprising a directional antenna to transmit a radio frequency signal along a aiming axis, including. controlling the transmission of a radiofrequency signal along the axis, calculating received powers as a function of radial distance on a sum channel and an elevation deviation channel, calculating tilt angular deviation values, determining an estimator of the radial distance of the aircraft relative to the point on the ground intercepted by the aiming axis as a function of at least one zero crossing of the angular deviation measurement in a selected area of the angular deviation measurement curve, calculating an aircraft altitude relative to said point on the ground as a function of the estimator of the radial distance and the elevation angle of the aiming axis.

公开(公告)号：US20200025901A1

公开(公告)日：2020-01-23

申请号：US16125727

申请日：2018-09-09

Applicant: THALES

Inventor： Vincent CORRETJA ,  Bernard JOSEPH ,  Rodolphe COTTRON ,  Philippe GOY

IPC: G01S13/524 ,  G01S13/526 ,  G01S13/20

Abstract: The echoes being picked up in the distance-speed domain, the method being wherein it includes a step of producing a mask, in the distance-speed plane, overlying the zone of detection of the ground and/or sea clutter echoes picked up by the sidelobes, the zone being determinable by the antenna parameters of the radar, the waveform emitted by the radar and the environmental context of the radar, all the points of the distance-speed plane which are covered by the mask being assigned a characteristic which is specific to the mask; a step of filtering the received echoes, in which the echoes covered by the mask are rejected from the radar reception processing.