专利检索 ap:("OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AEROSPATIALES (ONERA)" OR "Centre National d'Etudes Spatiales") AND inv:"Nicolas Cezard" 第 1 页

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发明授权
LIDAR for heterodyne detection by a local oscillator and a dual probing beam, at one or several simultaneous frequency(ies), and LIDAR detection method by dual heterodyning detection 有权

公开(公告)号：US11585927B2

公开(公告)日：2023-02-21

申请号：US16446305

申请日：2019-06-19

申请人： OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AEROSPATIALES (ONERA) , Centre National d'Etudes Spatiales

发明人： Philippe Hebert , Francois Lemaitre , Nicolas Cezard

IPC分类号： G01S17/34 , G01J3/02 , G02B23/24

摘要： A LIDAR-type device for a remote spectroscopy of a matter includes an optical emission channel that includes a laser source and an optical waves frequency generator to generate a first comb, a second comb, and a local comb. Each comb includes at least one stripe. A transmit telescope emits an emission signal. A reception channel includes a receive telescope that receives a signal reflected by the matter traversed by the emission signal and a detection system that detects a first beat signal of the at least one stripe of the local comb with the corresponding first stripe of the first reflected comb, a second beat signal of the at least one stripe of the local comb with the corresponding second stripe of the second reflected comb, and a third beat signal of the at least one first beat signal with the at least one second beat signal.