Title:
RANGING DEVICE, RANGING METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2022/124066
Kind Code:
A1
Abstract:
The present disclosure relates to a ranging device, a ranging method, and a program which enable high-accuracy LiDAR to be achieved at a low cost. In the present invention: the emission and quenching of a plurality of light sources are controlled for each light source using a unique pattern, such control performed in a plurality of divided times resulting from dividing a modulation period for chirp modulating the frequency of the transmission light of a plurality of channels; the interference light between reception light and transmission light is detected and digitized; the same is made a reception signal sequence and a fast Fourier Transform is applied thereto to determine the frequency spectrum; the beat frequency is identified from a peak magnitude comparison; and as a result of the foregoing, the distance to and the relative speed of an object of measurement are measured. This disclosure can be applied to LiDAR.
Inventors:
TERADA HARUHIKO (JP)
Application Number:
PCT/JP2021/042881
Publication Date:
June 16, 2022
Filing Date:
November 24, 2021
Export Citation:
Assignee:
SONY SEMICONDUCTOR SOLUTIONS CORP (JP)
International Classes:
G01S17/34
Domestic Patent References:
| WO2019141641A1 | 2019-07-25 | |||
| WO2017141352A1 | 2017-08-24 | |||
| WO2007020704A1 | 2007-02-22 | |||
| WO2018003852A1 | 2018-01-04 | |||
| WO2017126386A1 | 2017-07-27 |
Foreign References:
| US20160109565A1 | 2016-04-21 | |||
| JP2005037354A | 2005-02-10 |
Other References:
IGUCHI, TOSHIO: "HF Ocean Radar 3. On the Transmit/Receive Switching Wave form for FMICW HF Ocean Radar", REVIEW OF THE COMMUNICATIONS RESEARCH LABORATORY, vol. 37, no. 3, 31 May 1991 (1991-05-31), JP , pages 361 - 374, XP009537638, ISSN: 0914-9279
Attorney, Agent or Firm:
NISHIKAWA Takashi et al. (JP)
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