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| Research on data processing of automatic pressure tide gauge |
| Yan Xichen1,Wang Chongming2 ,Zhang Yanchang2 |
1.Hydrographic Survey Brigade of Tianjin Maritime Safety Administration, Tianjin 300000;
2.Tianjin Water Transport Engineering institute of Transportation Ministry, Tianjin 300000 |
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Abstract At present, in the hydrographic surveying, tide data are commonly collected by using RBR automatic pressure tide gauge that is of high frequency collecting, high precision,small volume and convenient installation in various objects. It is widely applied in marine research and monitoring of port and dam as well as hydrographic measurement. This paper researches on the problems that occur in the tide data processing of automatic pressure tide gauge. Meanwhile, pressure correction is put forward. It also describes the zero drift correction of RBR tide gauge and discusses the feasibility of smoothing and de-noising the tide data by wavelet analysis method. Finally, the de-noising methods and steps are introduced.
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Received: 04 February 2013
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2013, Vol. 30 
