A new method for positioning a single transponder without sound velocity profile

4th International Conference on Advances in Energy Resources and Environment Engineering

能源学;生态环境科学

Sun, Wenzhou^1 ; Yin, Xiaodong^1 ; Liu, Qiang^2 ; Ma, Zhuoxi^3

Department of Hydrography and Cartography, Dalian Naval Academy, Dalian

116018, China^1

91937 Troops, Zhoushan

316000, China^2

61363 Troops, Xi'an

710054, China^3

关键词: Difference techniques;    Least squares adjustments;    Main error sources;    Observation equation;    Short periods;    Sound velocity profile;    Spatial and temporal variation;    Three dimensional coordinate;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/237/3/032028/pdf
DOI  :  10.1088/1755-1315/237/3/032028

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The systematic error due to the spatial and temporal variation of sound velocity profile (SVP) is the main error source for positioning a single transponder. Difference techniques can eliminate systematic error of long period, while the short period terms will still retain. This paper focuses on improving the accuracy of the single transponder positioning when the systematic errors of short period exists. Based on the equivalent SVP method, a new method was put forward to calculate the effective sound velocity (ESV) which will be used to improve the traditional observation equation. Then, the three-dimensional coordinates of transponder will be determined by least squares adjustment. Simulation experiments shows that the new methods can greatly improved accuracy and efficiency for positioning a single transponder.