公开(公告)号：US20190250244A1

公开(公告)日：2019-08-15

申请号：US16269652

申请日：2019-02-07

Applicant: SOUTH CHINA UNIVERSITY OF TECHNOLOGY

Inventor： Fei JI ,  Renzhi BAO ,  Fangjiong CHEN ,  Hua YU

IPC: G01S5/06 ,  H04B13/02 ,  G01S5/02

CPC classification number: G01S5/06 ,  G01S5/0215 ,  H04B13/02

Abstract: Disclosed is an underwater source node positioning method, which includes the specific steps: (1) placing distributed underwater receiving nodes, the source node transmitting a pulse signal, and the receiving nodes receiving the pulse signal sent by the source node; (2) processing the signal of each receiving node; (3) according to a multipath signal received by each receiving node, performing parameter estimation of the position of the source node, specifically: (3-1) calculating a path length of each path; (3-2) calculating a delay difference between each path and a direct path; (3-3) calculating the signal received by each receiving node; (3-4) performing mesh search matching to obtain the position of the source node. Compared with the conventional method, the present invention requires fewer receiving nodes and does not require accurate clock synchronization of signals. The present invention utilizes multipath signals propagated by signals to enable more accurate positioning of the source nodes.