Precise Positioning of Underwater Static Objects without Sound Speed Profile
Precise Positioning of Underwater Static Objects without Sound Speed Profile
复制标题
无声速剖面的水下静态物体精确定位
DOI：
10.1080/01490419.2010.518501
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发表时间：
2011-01-01
期刊：
影响因子：
1.6
通讯作者：
Zheng, Zuoya
中科院分区：
文献类型：
--
作者：
Yang, Fanlin;Lu, Xiushan;Zheng, Zuoya
提出了一种基于全球定位系统（GPS）声学原理的水下静止目标定位新方法。它采用了一个模型，其中的测距误差遵循二次关系的声波信号的传播时间。最小二乘法被用来估计有效声速。这样就可以确定物体的精确位置。仿真结果表明，该方法能够在500 m水深范围内实现5 cm精度的三维定位。50-100 m深度作业时间为5-10 min，500 m深度作业时间为20-30 min。
A new method of positioning underwater static objects is presented based on Global Positioning System (GPS) acoustics. It adopts a model in which the ranging errors follow a quadratic relation with the travel time of acoustic signals. A least squares technique is used to estimate the effective sound speed. The precise location of an object can then be made. The simulation shows that the method is capable of determining the three-dimensional position with an accuracy of 5 cm in a water depth of 500 m. The operating time is respectively 5–10 minutes in 50–100 m depth and 20–30 minutes in 500 m depth.