Ultra-Fast Calculation Method of Incident Angle Based on Underwater Acoustic Round-Trip Positioning

• DOI: 10.2139/ssrn.4538987
• Publication Date: 2023-08-14T12:48:57Z
• Authors: Yangfan Liu; Jaume Sanz Subirana; Tianhe Xu; Junting Wang; Wenlong Yang; Shengqiu Zhang; Jianxu Shu

In underwater acoustic round-trip positioning, the incident angle calculation in constant gradient ray tracing significantly hinders efficiency of positioning calculation. To address this issue, we proposed an ultra-fast method for determining based on positioning. Specifically, employs k-mean++ clustering algorithm to streamline sound velocity profile. Additionally, a function formula is constructed, and its partial derivative with respect Snell's derived. Finally, Newton's applied iteratively calculate angles signal emission reception, respectively. The simulation test results demonstrate that reduces time by 80.123%, 80.105%, 80.136%, 80.104% four transponders compared traditional method. field experiment, superior 81.693% time. These findings indicate significant superiority