Sensors, Vol. 19, Pages 4373: An Ultra-Short Baseline Positioning Model Based on Rotating Array & amp; Reusing Elements and Its Error Analysis

Sensors, Vol. 19, Pages 4373: An Ultra-Short Baseline Positioning Model Based on Rotating Array & Reusing Elements and Its Error Analysis
Sensors doi: 10.3390/s19204373
Authors:
Jinwu Tong
Xiaosu Xu
Lanhua Hou
Yao Li
Jian Wang
Liang Zhang

The USBL (Ultra-Short Base Line) positioning system is widely used in underwater acoustic positioning systems due to its small size and ease of use. The traditional USBL positioning system is based on ‘slant range and azimuth’. The positioning error is an increasing function with the increase in distance and the positioning accuracy depends on the ranging accuracy of the underwater target. This method is not suitable for long-distance underwater positioning operations. This paper proposes a USBL positioning calculation model based on depth information for ‘rotating array and reusing elements’. This method does not need to measure the distance between the USBL acoustic array and target, so it can completely eliminate the influence of long-distance ranging errors in USBL positioning. The theoretical analysis and simulation experiments show that the new USBL positioning model based on ‘rotating array and reusing elements’ can completely eliminate the influence of the wavelength error and spacing error of underwater acoustic signals on the positioning accuracy of USBL. The positioning accuracy can be improved by approximately 90%, and th...

Source: Sensors - October 9, 2019 Category: Biotechnology Authors: Jinwu Tong Xiaosu Xu Lanhua Hou Yao Li Jian Wang Liang Zhang Tags: Article Source Type: research