公开(公告)号：US20200256955A1

公开(公告)日：2020-08-13

申请号：US16270075

申请日：2019-02-07

Applicant: Analog Devices, Inc.

Inventor： Ronald A. Kapusta ,  Miles R. Bennett

IPC: G01S7/484 ,  G01S7/487 ,  G01S7/486

Abstract: Techniques are described to adjust one or more parameters to vary the illumination output within at least one of the regions-of-interest (ROIs) in a field-of-view (FOV) and to adjust one or more corresponding receiver parameter(s). By associating different parameters between two or more ROIs within an FOV, this disclosure describes a LIDAR system having an adaptive FOV. An adaptive FOV can allow a LIDAR system to vary its performance between ROIs. For example, in an FOV having at least a first ROI and a second ROI, the LIDAR system can output more optical power in the first ROI then the second ROI to increase the signal-to-noise (SNR) ratio and therefore achieve a longer detection range.

公开(公告)号：US11378689B2

公开(公告)日：2022-07-05

申请号：US16793505

申请日：2020-02-18

Applicant: Analog Devices, Inc.

Inventor： Tyler Adam Dunn ,  Andrew William Sparks ,  Michael Ziemkiewicz ,  Miles R. Bennett

IPC: G01C3/08 ,  G01S17/34 ,  G01S7/4914 ,  G01S7/4911

Abstract: A light detection and ranging (LIDAR) system comprises a laser diode; a laser diode driver circuit configured generate a laser beam using the laser diode and to frequency chirp the generated laser beam according to a frequency chirp period; a laser splitter to split the generated laser beam into N transmit laser beams pointed at different angles, wherein N is an integer greater than one, and a frequency chirp period of each of the N transmit laser beams is the frequency chirp period of the generated laser beam; and multiple return beam paths to receive N return beams and determine time of flight values for the N return beams in parallel.

公开(公告)号：US20210255324A1

公开(公告)日：2021-08-19

申请号：US16793505

申请日：2020-02-18

Applicant: Analog Devices, Inc.

Inventor： Tyler Adam Dunn ,  Andrew William Sparks ,  Michael Ziemkiewicz ,  Miles R. Bennett

IPC: G01S17/34 ,  G01S7/4911 ,  G01S7/4914

Abstract: A light detection and ranging (LIDAR) system comprises a laser diode; a laser diode driver circuit configured generate a laser beam using the laser diode and to frequency chirp the generated laser beam according to a frequency chirp period; a laser splitter to split the generated laser beam into N transmit laser beams pointed at different angles, wherein N is an integer greater than one, and a frequency chirp period of each of the N transmit laser beams is the frequency chirp period of the generated laser beam; and multiple return beam paths to receive N return beams and determine time of flight values for the N return beams in parallel.

公开(公告)号：US20210156973A1

公开(公告)日：2021-05-27

申请号：US16697793

申请日：2019-11-27

Applicant: Analog Devices, Inc.

Inventor： Ronald A. Kapusta ,  Miles R. Bennett ,  Lijun Gao

IPC: G01S7/4861 ,  G01S7/487

Abstract: Techniques for using multiple detection paths in a light detection and ranging (LIDAR) receiver circuit. In general, the receiver circuit can perform more than one flow of filtering, detection, and estimation on the same return signal. One advantage of using multiple detection paths is the ability to extract different aspects of the return signal.

公开(公告)号：US20200256954A1

公开(公告)日：2020-08-13

申请号：US16270055

申请日：2019-02-07

Applicant: Analog Devices, Inc.

Inventor： Ronald A. Kapusta ,  Shawn S. Kuo ,  Miles R. Bennett

IPC: G01S7/484 ,  H01S5/062 ,  G01S17/10

Abstract: Techniques are described to encode a single light pulse with information that can provide the benefits of a single long pulse and a short, coded pulse train. For example, techniques are described to generate a light pulse for transmission that has an optical intensity profile that includes a waveform having one or more relatively narrower pulses superimposed upon a relatively wider pulse. Thus, a hybrid pulse can be generated that includes both a wide pulse and a narrow pulse train portion, for example, superimposed thereon.