Title:
HIGH-PRECISION LONG-DISTANCE UNDERWATER ACOUSTIC RANGING METHOD BASED ON LOW-FREQUENCY CONTINUOUS SOUND WAVE PEAK CAPTURE
Document Type and Number:
WIPO Patent Application WO/2020/191804
Kind Code:
A1
Abstract:
A high-precision long-distance underwater acoustic ranging method based on low-frequency continuous sound wave peak capture. The ranging method comprises: by means of a characteristic that a magnetostrictive rod itself in a magnetostrictive transducer vibrates under the action of a magnetic field, emitting a sound wave a0, and receiving the sound wave a0 and an echo a1 reflected by a target object by means of a hydrophone (S130); after performing sound-electricity conversion on the sound wave a0 and the echo a1 by using the hydrophone, performing filtering processing to obtain a sampling electric signal s, and then obtaining a distance d of the target object by using peak time ti according to a time difference relation between the sound wave a0 and the echo a1 (S170). According to the ranging method, ranging of the target object is completed by means of a manner of capturing a peak value of an electric signal under a condition that the electric signal subjected to sound conversion is only simply filtered, and the ranging precision is improved.
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Inventors:
LUO AN (CN)
ZHAO NENGTONG (CN)
YANG XIN (CN)
NING QIAN (CN)
YANG LING (CN)
WANG YIXING (CN)
HAN XU (CN)
YANG JUNQUAN (CN)
OU SUYU (CN)
CHEN YANDONG (CN)
DAI YUXING (CN)
LI MINYING (CN)
CHEN YU (CN)
ZHAO NENGTONG (CN)
YANG XIN (CN)
NING QIAN (CN)
YANG LING (CN)
WANG YIXING (CN)
HAN XU (CN)
YANG JUNQUAN (CN)
OU SUYU (CN)
CHEN YANDONG (CN)
DAI YUXING (CN)
LI MINYING (CN)
CHEN YU (CN)
Application Number:
PCT/CN2019/081503
Publication Date:
October 01, 2020
Filing Date:
April 04, 2019
Export Citation:
Assignee:
GUANGDONG ZHICHENG CHAMPION GROUP CO LTD (CN)
International Classes:
G01S15/32
Foreign References:
| CN107884774A | 2018-04-06 | |||
| CN104931971A | 2015-09-23 | |||
| CN103995263A | 2014-08-20 | |||
| CN107765235A | 2018-03-06 | |||
| CN105241459A | 2016-01-13 | |||
| CN106054135A | 2016-10-26 | |||
| US6202034B1 | 2001-03-13 |
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
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