公开(公告)号：US20210184347A1

公开(公告)日：2021-06-17

申请号：US17121363

申请日：2020-12-14

Applicant: THALES

Inventor： Jean-Michel HODE

IPC: H01Q1/52 ,  H04B7/06 ,  H04B1/525 ,  H04B1/04 ,  H04B17/21

Abstract: The invention relates to a method for characterizing the effects of coupling of a radiofrequency transceiver apparatus comprising at least one transmit path and at least one receive path, and to an apparatus implementing the method. The method comprises the calculation of coefficients of a correcting filter, with the steps of: transmitting a known signal over a transmit path, receiving a signal over a receive path, calculating the coefficients of the correcting filter on the basis of the known signal and of the signal received over said receive path. The method further comprises a step, carried out during the transmission of a useful signal over the transmit path, of filtering the signal transmitted over the transmit path by means of said correcting filter in order to determine the transmitted signal received by coupling effect over the receive path.

公开(公告)号：US20210119655A1

公开(公告)日：2021-04-22

申请号：US17071760

申请日：2020-10-15

Applicant: THALES

Inventor： Jean-Michel HODE

IPC: H04B1/12

Abstract: The invention relates to a method for filtering a numerical input signal sampled at a sampling frequency in order to obtain a filtered signal, the method including at least one step for: obtaining a first (respectively second) output signal by carrying out first (respectively second) operations on the first (respectively second) processing channel, the first (respectively second) operations including at least the application of a discrete Fourier transform to M/2p points on a signal coming from the input signal, the integer p being greater than or equal to 1, applying an inverse discrete Fourier transform to M/2p points on the first signal in order to obtain M points of the spectrum of the first signal, M being an integer strictly greater than 2, the application step being carried out by the addition of the results of two processing channels.

公开(公告)号：US20170269192A1

公开(公告)日：2017-09-21

申请号：US15458222

申请日：2017-03-14

Applicant: THALES

Inventor： Jean-Michel HODE

IPC: G01S7/292

CPC classification number: G01S7/292 ,  H03H17/0213

Abstract: A signal filtering method for filtering a numerical input signal that is sampled at a sampling frequency in order to obtain a filtered signal, the method including a first operation of application of a discrete Fourier transform to M points on a processed signal in order to obtain M points of the spectrum of the processed signal, each point of the spectrum of the processed signal corresponding to the even-numbered indices of a spectral analysis at 2*M points of the processed signal and a second operation of application of a discrete Fourier transform to M points on the processed signal in order to obtain M points of the spectrum of the processed signal, each point of the spectrum of the processed signal corresponding to the odd-numbered indices of a spectral analysis at 2*M points of the processed signal.

公开(公告)号：US20210117498A1

公开(公告)日：2021-04-22

申请号：US17071780

申请日：2020-10-15

Applicant: THALES

Inventor： Jean-Michel HODE

IPC: G06F17/14 ,  G06F5/01 ,  G06F7/50

Abstract: The invention relates to a method for filtering a numerical input signal sampled at a sampling frequency in order to obtain a filtered signal, the method including at least one step for: obtaining a first (respectively second) output signal by carrying out first (respectively second) operations on the first (respectively second) processing channel, the first (respectively second) operations including at least the application of a discrete Fourier transform to M/2 points on a signal coming from the input signal, applying an inverse discrete Fourier transform to M/2 points on the first signal in order to obtain M points of the spectrum of the first signal, M being an integer strictly greater than 2, the application step being carried out by the addition of the results of two processing channels.

公开(公告)号：US20180088210A1

公开(公告)日：2018-03-29

申请号：US15691544

申请日：2017-08-30

Applicant: THALES

Inventor： Patrick GARREC ,  Jean-Michel HODE ,  Richard MONTIGNY

IPC: G01S7/282

CPC classification number: G01S7/282 ,  G01S7/023 ,  G01S7/032 ,  H03C3/08 ,  H03K3/00 ,  H03K5/04

Abstract: A wave transmitted by an antenna made up of an array of radiating elements, two pulse waves are transmitted, each modulated by a phase shift law known as modulation phase shift, the phase shifts being in opposition, a first wave being transmitted by a sub-array of radiating elements referred to as odd and the second wave being transmitted by a second sub-array of radiating elements referred to as even, the two sub-arrays being interleaved, the transmitted wave being the combination of the first wave and the second wave.

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

Inventor： Patrick GARREC ,  Jean-Michel HODE ,  Victor VAILLANT

IPC: G06F17/14 ,  H03M1/12

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.

公开(公告)号：US20170269195A1

公开(公告)日：2017-09-21

申请号：US15532080

申请日：2015-11-10

Applicant: THALES

Inventor： Rodolphe COTTRON ,  Jean-Michel HODE

IPC: G01S7/40 ,  G01S7/32

CPC classification number: G01S7/4021 ,  G01S7/2921 ,  G01S7/32 ,  G01S13/28 ,  G01S13/44

Abstract: A method for determining parameters of a finite impulse response pulse compression filter, implemented by a multi-channel radar comprises: a step Etp10 of transmitting a calibration signal and of acquiring this calibration signal after propagation through the transmission channel, a step Etp20 of injecting the signal acquired, at the input of each of the reception channels, a step Etp30 of measuring the signal at the output of each reception channel, a step Etp40 of calculating the transfer function of the matched filters on the basis of the signals at the output of the reception channels, a step Etp50 of measuring the value of the average power at the output of the various reception channels and of calculating the relative gains between each of the reception channels and a predetermined reception channel on the basis of the measured values of average powers.