Title:
FMCW FREQUENCY SWEEP METHOD AND FMCW LIDAR SYSTEM
Document Type and Number:
WIPO Patent Application WO/2024/051042
Kind Code:
A1
Abstract:
An FMCW frequency sweep method and an FMCW Lidar system. The FMCW frequency sweep method comprises: acquiring a frequency sweep beam, wherein the frequency sweep beam cyclically and respectively consecutively executes n chirps within a plurality of preset frequency sweep measurement cycles, n being a positive integer, and n ≥ 2, and each chirp comprises one up-conversion sub-segment with a preset up-conversion slope and one down-conversion sub-segment with a preset down-conversion slope that are consecutive (S201); the frequency sweep bandwidth of each chirp and a preset total frequency sweep bandwidth satisfy the following relationship: f^S = f^BW/n, where f^BW is the preset total frequency sweep bandwidth, and f^S is the sweep frequency bandwidth; and the duration of each up-conversion sub-segment and each down-conversion sub-segment and each preset frequency sweep measurement cycle satisfy the following relationship: T^S = T^0/2n, where T^0 is the preset frequency sweep measurement cycle, and T^S is the duration of each up-conversion sub-segment and each down-conversion sub-segment.
Inventors:
JIANG GUOMIN (CN)
PARK JINKYU (CN)
HAN HONGRU (CN)
KONG ZIYUN (CN)
JAYATILLEKA HASITHA (CN)
ZHANG BANGHONG (CN)
SUN TIANBO (CN)
SUN JIE (CN)
PARK JINKYU (CN)
HAN HONGRU (CN)
KONG ZIYUN (CN)
JAYATILLEKA HASITHA (CN)
ZHANG BANGHONG (CN)
SUN TIANBO (CN)
SUN JIE (CN)
Application Number:
PCT/CN2022/142577
Publication Date:
March 14, 2024
Filing Date:
December 28, 2022
Export Citation:
Assignee:
BEIJING MORELITE SEMICONDUCTOR CO LTD (CN)
International Classes:
G01S17/58; G01S7/4913; G01S17/34
Foreign References:
| CN115166761A | 2022-10-11 | |||
| CN114879215A | 2022-08-09 | |||
| CN114442110A | 2022-05-06 | |||
| CN102680967A | 2012-09-19 | |||
| CN113253243A | 2021-08-13 | |||
| DE102021209408A1 | 2022-03-03 | |||
| US20190154835A1 | 2019-05-23 |
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