公开(公告)号：US11283168B2

公开(公告)日：2022-03-22

申请号：US16636831

申请日：2018-08-07

Applicant: THALES

Inventor： Jérome Bourderionnet ,  Gilles Feugnet ,  Arnaud Brignon

IPC: H01Q3/26 ,  H04B10/2575

Abstract: The invention relates to an optical reception device for receiving a signal from an antenna array comprising: a light source generating an optical carrier and M phased optical beams which are frequency-shifted relative to the optical carrier; a collection circuit comprising N paths connected to an antenna, and comprising a modulator of an incident signal; a beam-forming network connecting (M+1) first ports to N second ports connected to one path, M first ports being connected to the optical beams and a control port connected to the other ports so that a maximum optical intensity on the control port corresponds to phased signals on the N second ports.

公开(公告)号：US10222268B2

公开(公告)日：2019-03-05

申请号：US15780182

申请日：2016-11-30

Applicant: THALES

Inventor： Jérome Bourderionnet ,  Arnaud Brignon ,  Marie Antier-Murgey

IPC: G01B9/02 ,  G01J9/02 ,  H01S3/00 ,  G04F13/02 ,  G01J11/00 ,  H01S3/23

Abstract: A method for measuring the delay between N pulses having a duration less than 100 picoseconds comprises the steps: collimated emission of the pulses having the same repetition frequency, emission of a reference pulse having the same repetition frequency capable of producing interference fringes with each of the pulses, for each of the pulses, detection, by a detector, of the coherent sum of this pulse with the reference pulse, this sum producing the interference fringes, the fringes originating from each of the pulses being distinguishable from one another. The reference pulse is emitted with an adjustable delay, and the method further comprises: for each delay, simultaneous measurement for the pulses of N contrasts of the interference fringes, for each of the pulses, a delay value between this pulse and the reference pulse is determined by the delay corresponding to the maximum contrast.