公开(公告)号：US12123934B2

公开(公告)日：2024-10-22

申请号：US17456452

申请日：2021-11-24

Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES

Inventor： Mykhailo Zarudniev ,  Cédric Dehos ,  Alexandre Siligaris

IPC: G01S13/02 ,  G01S13/34

CPC classification number: G01S13/0209 ,  G01S13/343

Abstract: A radar measuring device including at least:



a circuit for generating a radar signal RFIN(t);
an emitting antenna;
an injection-locked oscillator;
a first power divider comprising an input coupled to an output of the circuit for generating the radar signal RFIN(t), a first output coupled to the emitting antenna, and a second output to an input of the injection-locked oscillator which is configured to be locked over a portion of an effective band B of the radar signal RFIN(t);
a receiving antenna intended to receive a reflected radar signal RFIN_REFL(t);
a mixer comprising a first input coupled to the receiving antenna, a second input coupled to an output of the injection-locked oscillator, and an output coupled to an input to a signal processing circuit.

公开(公告)号：US11774572B2

公开(公告)日：2023-10-03

申请号：US16721773

申请日：2019-12-19

Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES

Inventor： Jérémy Barra ,  Olivier Debicki ,  Suzanne Lesecq ,  Nicolas Mareau ,  Laurent Ouvry ,  Mykhailo Zarudniev

IPC: G01S13/60 ,  B60R11/00 ,  G01S15/60 ,  G01S13/64 ,  G01S13/18 ,  G01S13/524 ,  G01S13/58 ,  G01S13/931 ,  G01S13/88

CPC classification number: G01S13/60 ,  B60R11/00 ,  G01S15/60 ,  G01S13/18 ,  G01S13/524 ,  G01S13/589 ,  G01S13/64 ,  G01S13/882 ,  G01S13/931

Abstract: A method for measuring, using a radar or sonar, the velocity with respect to the ground of a carrier moving parallel to the ground, includes the following steps: a) orienting the line of sight of the radar or sonar toward the ground; b) emitting a plurality of radar or sonar signals (P1-PN) that are directed toward the ground, and acquiring respective echo signals (E1-EN); c) processing the acquired echo signals so as to obtain, for one or more echo delay values, a corresponding Doppler spectrum; d) for the or at least one the echo delay value, determining a high cut-off frequency of the corresponding Doppler spectrum; and e) computing the velocity of the carrier with respect to the ground on the basis of the one or more high cut-off frequencies. A system allowing such a method to be implemented.

公开(公告)号：US09900491B2

公开(公告)日：2018-02-20

申请号：US15068274

申请日：2016-03-11

Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES

Inventor： Mykhailo Zarudniev ,  Suzanne Lesecq ,  Arnaud Tonda

IPC: H04N5/232 ,  G02B7/09 ,  G02B7/36 ,  G02B7/38 ,  G03B13/36

CPC classification number: H04N5/23212 ,  G02B7/09 ,  G02B7/36 ,  G02B7/38 ,  G03B13/36

Abstract: A method for automatically focusing a camera comprising an image sensor, at least one lens configured to project an image onto the sensor and an actuator configured to modify a focusing parameter of the lens, comprises: a first phase of controlling the actuator in an open loop so the focusing parameter successively takes a plurality of predefined values, images being acquired for each value of the focusing parameter and a sharpness indicator being calculated on the basis of each image; and a second phase of controlling the actuator in a closed loop to maximize the sharpness indicator, the second closed-loop control phase being implemented by making use of a control law and starting conditions determined on the basis of the sharpness indicators calculated during the first phase. A system for automatically focusing a camera for implementing the method, and a camera equipped with such a system is provided.

公开(公告)号：US09602114B2

公开(公告)日：2017-03-21

申请号：US14853247

申请日：2015-09-14

Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES

Inventor： Michael Pelissier ,  Anton Korniienko ,  Mykhailo Zarudniev ,  Gèrard Scorletti ,  Olesia Mokrenko ,  Eric Blanco ,  Patrick Villard ,  Gèrard Billiot

IPC: H03L7/06 ,  H03L7/097 ,  H03L7/08 ,  G06F17/50 ,  H04L7/00 ,  H03L7/099

CPC classification number: H03L7/097 ,  G06F17/5045 ,  H03L7/08 ,  H03L7/099 ,  H03L2207/50 ,  H04L7/0079

Abstract: A design method for a phase-locked loop comprises: a controlled-frequency oscillator; a phase comparator, to determine a phase difference between an output signal of the controlled-frequency oscillator and a reference signal; a corrector to receive as input a signal representative of the phase difference and to generate at its output a first correction signal; at least one second corrector, to receive as input a signal representative of or affected by a phase noise of the reference signal or of the output signal of the controlled-frequency oscillator and to generate at its output a second correction signal; and a circuit for generating a slaving signal for the controlled-frequency oscillator on the basis of the first and second correction signals; the method using the H-infinity method. Method for fabricating such a loop comprising a design step implementing this method. Phase-locked loop thus obtained.

公开(公告)号：US12123969B2

公开(公告)日：2024-10-22

申请号：US17406265

申请日：2021-08-19

Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES

Inventor： Mykhailo Zarudniev ,  Etienne Antide ,  Cédric Dehos ,  José-Luis Gonzalez Jimenez ,  Clément Jany ,  Alexandre Siligaris

IPC: G01S7/35 ,  G01S13/34

CPC classification number: G01S7/35 ,  G01S13/343

Abstract: A generator of a frequency modulated radar signal includes a generator of a periodic signal frequency modulated over a part Tramp of a period T, corresponding to a square signal of which the frequency varies linearly in a first frequency band Bin of central frequency fin; an oscillator generating a sinusoidal signal of frequency fc>fin and included in a second frequency band Bamp>Bin and corresponding to the linear variation of the frequency of the radar signal; and means coupled to an electrical supply input of the oscillator such that they generate a voltage for supplying the oscillator at the frequency of the frequency modulated periodic signal.