公开(公告)号：US11624828B2

公开(公告)日：2023-04-11

申请号：US16464108

申请日：2017-11-21

申请人： BLACKMORE SENSORS & ANALYTICS, LLC

发明人： Stephen C. Crouch ,  Randy R. Reibel ,  James Curry ,  Trenton Berg

IPC分类号： H04B10/00 ,  G01S17/89 ,  G01S7/481 ,  G01S17/42 ,  G01S17/18 ,  G01S17/34

摘要： Techniques for adaptive scanning with a laser scanner include obtaining range measurements at a coarse angular resolution and determining a range gate subset and a characteristic range. A fine angular resolution is based on the characteristic range and a target spatial resolution. If the fine angular resolution is finer than the coarse angular resolution, then a minimum vertical angle and maximum vertical angle is determined for a horizontal slice of the subset of angular width based on the first angular resolution. The scanning laser ranging system is then operated to obtain second range measurements at the second angular resolution in the slice between the minimum vertical angle and the maximum vertical angle. In some embodiments, the scanning is repeated for each horizontal slice in the range gate subset using a minimum vertical angle and maximum vertical angle for that slice.

公开(公告)号：US11619718B2

公开(公告)日：2023-04-04

申请号：US17557401

申请日：2021-12-21

申请人： Analog Photonics LLC

发明人： Ehsan Hosseini ,  Michael Watts ,  Christopher Poulton ,  Matthew Byrd ,  Diedrik Vermeulen ,  Peter Russo

IPC分类号： G01S7/4863 ,  G01S7/481 ,  G01S17/42 ,  G01S17/34

摘要： Aspects of the present disclosure describe systems, methods, and structures—including LiDAR—that employ multiple detectors that may determine multiple incident angles of multiple received radiation beams and advantageously do not require or employ phase shifters in illustrative embodiments and may instead—employ optical Fourier transform structures.

公开(公告)号：US11598849B2

公开(公告)日：2023-03-07

申请号：US16208192

申请日：2018-12-03

申请人： Munro Design & Technologies, LLC

发明人： James F. Munro

IPC分类号： G01S7/481 ,  G01S17/36 ,  H04N5/238 ,  G01S7/4911 ,  G01S7/497 ,  G01S7/484 ,  G01S17/18 ,  G01S17/34 ,  G01S17/894 ,  G06T7/521 ,  G06T7/55 ,  G06T7/593 ,  G06T7/60 ,  G06T7/586 ,  H04N13/254 ,  H04N13/296 ,  H04N5/235 ,  H04N13/167 ,  H04N13/156 ,  G06T1/20 ,  G01S13/34

摘要： Methods and systems for generating illumination modulation signals, image intensifier gain modulation signals, and image sensor shutter control signals in a three-dimensional image-capturing system with one or more frequency synthesizers is disclosed. The illumination modulation signals, image intensifier gain modulation signals, and image sensor shutter signal are all coherent with one another, being derived from a common clock source. The use of frequency synthesizer concepts allow for the use of rapid modulation phase changes for homodyne operation, and further allow the use of rapid modulation frequency changes to mitigate the effects of inter-camera interference.

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.

公开(公告)号：US20230048766A1

公开(公告)日：2023-02-16

申请号：US17758771

申请日：2021-01-14

申请人： COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES

发明人： Laurent FREY

IPC分类号： G01S17/89 ,  G01S17/34 ,  G01S7/481 ,  G01S7/4912

摘要： A coherent LIDAR imaging system includes a laser source; an optical splitter/recombiner designed to split the laser radiation into a reference beam and into an object beam and to superpose the reference beam on a reflected object beam reflected by the scene; and an optical imager creating an image of the scene on a detector. The detector includes an array of pixels designed for detecting the reflected object beam and the reference beam which together form a recombined beam having a beat frequency representative of a range of the illuminated scene. The optical splitter/recombiner is configured to form an intermediate image of the reference beam in an intermediate image plane perpendicular to the optical axis.

公开(公告)号：US11579293B2

公开(公告)日：2023-02-14

申请号：US17513750

申请日：2021-10-28

申请人： AEVA, INC.

发明人： Kumar Bhargav Viswanatha ,  Jose Krause Perin ,  Esha John ,  Rajendra Tushar Moorti ,  Mina Rezk

IPC分类号： G01C3/08 ,  G01S17/34 ,  G01S7/497 ,  G01S17/36

摘要： A method of compensation in a light detection and ranging (LIDAR) system. The method includes generating a digitally-sampled target signal. The method also includes compensating for ego-velocity and target velocity in the digitally-sampled target signal based on an estimated ego-velocity and an estimated target velocity to produce a compensated digitally-sampled target signal.

公开(公告)号：US11555923B2

公开(公告)日：2023-01-17

申请号：US16107841

申请日：2018-08-21

申请人： Intel Corporation

发明人： Naresh Satyan ,  George Rakuljic

IPC分类号： G01S17/08 ,  G02B26/12 ,  G02B27/09 ,  G02B27/30 ,  G02B27/48 ,  G01S7/4914 ,  G01S17/58 ,  G01S17/42 ,  G01S7/4911 ,  G01S17/34

摘要： LIDAR systems, and methods of measuring a scene are disclosed. A laser source emits one or more optical beams. A scanning optical system scans the optical beams over a scene and captures reflections from the scene. A measurement subsystem independently measures the reflections from N subpixels within each scene pixel, where N is an integer greater than 1, and combines the measurements of the reflections from the N subpixels to determine range and/or range rate for the pixel.

公开(公告)号：US20220413143A1

公开(公告)日：2022-12-29

申请号：US17850881

申请日：2022-06-27

申请人： ROCKLEY PHOTONICS LIMITED

发明人： Roozbeh PARSA ,  Suresh CHENGALVA

IPC分类号： G01S17/34 ,  A61B5/00 ,  G01S17/89 ,  G01N21/39

摘要： A sensing device comprising: a light detection and ranging (LiDAR) sensor; and one or more optical spectroscopic sensors configured to extract biomarker information from one or more optical measurements of a user.

公开(公告)号：US20220413098A1

公开(公告)日：2022-12-29

申请号：US17359319

申请日：2021-06-25

申请人： Scantinel Photonics GmbH

发明人： Frank HÖLLER ,  Peter WESTPHAL

IPC分类号： G01S7/48 ,  G01S17/34 ,  G01S17/58 ,  G01S17/931

摘要： The invention relates to a system and a method for simultaneous range and velocity measurement in an FMCW LiDAR system. A first light source (16) produces first light having a first frequency that varies according to a first chirp rate. A second light source (18) produces second light having a second frequency that is constant or that varies according to a second chirp rate being different from the first chirp rate. Measuring light obtained by combining the first and second light therefore has two different frequency components during a measurement interval. A splitter (22) separates the measuring light into reference light and output light, and a scanning unit (28) directs the output light towards an object (12) and receives input light that is obtained by reflection of the output light at the object (12). A detector (32) detects a superposition of the reference light and the input light. A computing unit (34) computes unambiguously the range and relative velocity by analyzing beat frequencies resulting from the superposition, wherein ambiguities due to Doppler frequency shifts are removed by performing a decision tree analysis.

公开(公告)号：US11531108B2

公开(公告)日：2022-12-20

申请号：US16209948

申请日：2018-12-04

申请人： HL KLEMOVE CORP.

发明人： Ohcheol Heo

IPC分类号： G01S17/86 ,  G01S13/34 ,  G01S13/58 ,  G01S7/41 ,  G01S17/04 ,  G01S17/34 ,  G01S17/931

摘要： An apparatus for detecting a target is disclosed. The apparatus of detecting a target includes: a frequency mixer configured to calculate a first beat frequency based on a transmitted signal and a received signal of first scanning and calculate a second beat frequency based on a transmitted signal and a received signal of second scanning performed with a predetermined time interval from the first scanning; a controller configured to extract a first moving component by comparing an up-chirp period frequency and a down-chirp period frequency of at least one of the first beat frequency or the second beat frequency; extract a second moving component by comparing up-chirp period frequencies or down-chirp period frequencies of the first beat frequency and the second beat frequency; and determine the moving target based on the first moving component and the second moving component.