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Title:
ROTATIONAL SPEED MEASUREMENT METHOD, APPARATUS AND DEVICE, AND STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2022/155997
Kind Code:
A1
Abstract:
A rotational speed measurement method, apparatus and a device, and a storage medium. The method comprises: transmitting a vortex sound wave to an underwater rotating target, and collecting an echo signal generated after the vortex sound wave is scattered by the underwater rotating target (5); analyzing the echo signal by means of pre-set analysis, so as to obtain a spectral offset of the underwater rotating target; and on the basis of the spectral offset, calculating rotational speed information of the underwater rotating target (5).

Inventors:
CHEN MING (CN)
LI SHENGQUAN (CN)
CHENG ZHENGKUN (CN)
LUO MINGCHENG (CN)
SUN XIAOYU (CN)
ZHANG YI (CN)
Application Number:
PCT/CN2021/075088
Publication Date:
July 28, 2022
Filing Date:
February 03, 2021
Export Citation:
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Assignee:
PENG CHENG LAB (CN)
International Classes:
G01S15/58; G01S7/539
Foreign References:
CN108680768A2018-10-19
CN112147359A2020-12-29
CN108802735A2018-11-13
CN110420826A2019-11-08
CN106707270A2017-05-24
CN107843740A2018-03-27
Other References:
NOE JIMENEZ ET AL: "Sharp acoustic vortex focusing by Fresnel-spiral zone plates", APPLIED PHYSICS LETTERS, vol. 112, no. 20, 14 May 2018 (2018-05-14), XP012228475, DOI: 10.1063/1.5029424
QI JIE, CAO ZHENG;SUN HAIXIN;DONG YANGZE;QIU ZHIGANG: "Detection of Underwater Target Motion State Based on the Dopplerlet Transform", JOURNAL OF XIAMEN UNIVERSITY (NATURAL SCIENCE), vol. 56, no. 2, 31 March 2017 (2017-03-31), pages 259 - 263, XP055953222, ISSN: 0438-0497, DOI: 10.6043/j.issn.0438-0479.201607031
GUO ZHONG-YI, LIU HONG-JUN, LI JING-JING, ZHOU HONG-PING, GUO KAI, GAO JUN: "Research progress of applications of acoustic-vortex information", ACTA PHYSICA SINICA, vol. 69, no. 24, 1 January 2020 (2020-01-01), pages 244301, XP055953224, ISSN: 1000-3290, DOI: 10.7498/aps.69.20200826
Attorney, Agent or Firm:
CENFO INTELLECTUAL PROPERTY AGENCY (CN)
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