Continuous wave lidar with improved processed frequency modulation

• Main Authors: SEGURA PUCHADES, JORDI, FRYE LARS, DAHAMI ALIREZA
• Format: Patent
• Language: Chinese; English
• Published: 25.06.2024
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

The invention relates to a continuous wave lidar system (10) comprising: a laser source (SL) configured to generate laser radiation (L) having a laser optical frequency fopt-l that varies linearly over a plurality of N continuous frequency ranges indexed i; a first optical device (DO1) configured to spatially separate the laser radiation (L); a detection device (Det); a second optical device (DO2) configured to simultaneously deliver a recombination beam (Lrecovery) to the pixels; a frequency shifter (FSD) placed on the path of the reference beam and configured to shift said laser optical frequency by a frequency shift (fd0) comprised in an interval [fRmax, fRmin], a processing unit (UT); the continuous wave lidar imaging system is further configured to determine distance information from the signals (Spix) detected by the pixels (P). 本发明涉及一种连续波激光雷达系统(10)，包括：激光源(SL)，其被配置为生成激光辐射(L)，所述激光辐射具有在索引为i的多个N个连续频率范围内线性地变化的激光光学频率fopt-l；第一光学设备(DO1)，其被配置为在空间上分离所述激光辐射(L)；探测设备(Det)；第二光学设备(DO2)，其被配置为同时地向所述像素递送重组射束(Lrecomb)；频移