Title:
JOINT ESTIMATION METHOD FOR TARGET POSITION AND ENVIRONMENTAL PROPAGATION PARAMETER OF UNDERWATER WIRELESS SENSOR NETWORK
Document Type and Number:
WIPO Patent Application WO/2023/221655
Kind Code:
A1
Abstract:
Provided in the present invention is a joint estimation method for a target position and an environmental propagation parameter of an underwater wireless sensor network. The method comprises: S1, according to a layered propagation effect of a sound signal under the water, constructing a ranging model of a received signal strength based on Snell's Law and a ray tracing theorem; S2, by means of a plurality of first-order Taylor series expansions, constructing an objective function using an environmental propagation parameter and a target position as variables; S3, performing coarse-grained estimation on the variables by using a dichotomy; and S4, performing linear expansion according to the value of the coarse-grained estimation, and performing iterative re-optimization to further improve the precision of a solution. The method has the advantages of solving the problem of an increased positioning error resulting from an unknown environmental propagation parameter and a layering effect in an underwater signal propagation process.
Inventors:
MEI XIAOJUN (CN)
HAN DEZHI (CN)
WU ZHONGDAI (CN)
WANG JUNXIANG (CN)
GUO LEI (CN)
HU RONG (CN)
HAN BING (CN)
XU YIYAN (CN)
YANG MIN (CN)
ZHU YU (CN)
HAN DEZHI (CN)
WU ZHONGDAI (CN)
WANG JUNXIANG (CN)
GUO LEI (CN)
HU RONG (CN)
HAN BING (CN)
XU YIYAN (CN)
YANG MIN (CN)
ZHU YU (CN)
Application Number:
PCT/CN2023/084119
Publication Date:
November 23, 2023
Filing Date:
March 27, 2023
Export Citation:
Assignee:
SHANGHAI SHIP & SHIPPING RES INSTITUTE CO LTD (CN)
UNIV SHANGHAI MARITIME (CN)
COSCO SHIPPING TECHNOLOGY CO LTD (CN)
UNIV SHANGHAI MARITIME (CN)
COSCO SHIPPING TECHNOLOGY CO LTD (CN)
International Classes:
G01S5/02; H04B13/02; H04W64/00
Foreign References:
| CN108267743A | 2018-07-10 | |||
| CN115038165A | 2022-09-09 | |||
| CN107820207A | 2018-03-20 | |||
| US20190250244A1 | 2019-08-15 |
Other References:
GONG HAO-LIANG, CHEN BO, WAN LI-LI, JIANG NAN: "A dichotomy iteration method of real-time sound ray correction", SHENGXUE-JISHU : JIKAN = TECHNICAL ACOUSTICS, SHENG XUE JI SHU BIAN JI BU, CN, vol. 37, no. 4, 1 August 2018 (2018-08-01), CN , pages 303 - 308, XP093109253, ISSN: 1000-3630, DOI: 10.16300/j.cnki.1000-3630.2018.04.002
Attorney, Agent or Firm:
HAIHONG JIACHENG INTELLECTUAL PROPERTY & PARTNERS (CN)
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