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A tide level measurement uncertainty evaluation method based on a GNSS ocean buoy

A technique for measuring uncertainty and standard uncertainty, used in special data processing applications, instruments, electrical digital data processing, etc.

Active Publication Date: 2019-05-21
THE FIRST INST OF OCEANOGRAPHY SOA +1
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Problems solved by technology

At present, there is no method for evaluating the uncertainty of tide level measurement based on GNSS ocean buoys

Method used

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  • A tide level measurement uncertainty evaluation method based on a GNSS ocean buoy
  • A tide level measurement uncertainty evaluation method based on a GNSS ocean buoy
  • A tide level measurement uncertainty evaluation method based on a GNSS ocean buoy

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Embodiment Construction

[0085] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

[0086] The invention provides a method for evaluating the uncertainty of tide level measurement based on GNSS marine buoys, the specific embodiments are as follows:

[0087] Such as figure 1 The tide level measurement principle of the GNSS marine buoy shown is an example of a certain type of GNSS tide measurement buoy being tested at the Changzhou Island Wharf of the Guangzhou Nanhai Sub-bureau, and the tide level data is calculated according to the following method.

[0088] 1) The calculation of GNSS antenna phase center elevation adopts dynamic post-processing technology. The basic process is: use the precise ephemeris and clock error files provided by the International GNSS Service (IGS), and combine the IGS stations around the reference station to solve the coordinates o...

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Abstract

The invention discloses a tide level measurement uncertainty evaluation method based on a GNSS ocean buoy. The method comprises the following steps: 1establishing tide level measurement model, determining an uncertainty component in the model; respectively calculating the dynamic standard uncertainty of the uncertainty component; synthesizing the standard uncertainty of the tide level measurementresult per minute; arranging the standard uncertainty per minute according to a time sequence to obtain a tide level synthesis standard uncertainty sequence in an observation time period; and finallycalculating the expanded uncertainty. According to the uncertainty evaluation method disclosed by the invention, the accuracy of uncertainty evaluation of the data result of the GNSS tide level measurement buoy can be improved, the GNSS tide level measurement buoy is ensured to provide a qualified and reliable measurement result, and the GNSS tide level measurement buoy can better serve in the field of marine observation.

Description

technical field [0001] The invention relates to the technical field of marine measurement, in particular to a method for evaluating uncertainty of tide level measurement based on GNSS marine buoys. Background technique [0002] Measurement uncertainty is a non-negative parameter that characterizes the scatter given to the measured value according to the information obtained. The evaluation of measurement uncertainty is an essential step in measurement work. Its main application occasions are: uncertainty assessment of specific results, uncertainty assessment of routine measurement and calibration measurement capability of assessment laboratories, etc. We carry out the measurement uncertainty assessment of the tide level measurement system based on GNSS ocean buoys, which belongs to the uncertainty assessment of conventional ocean hydrographic measurement. Ocean tide level is one of the basic hydrological elements of marine nearshore and offshore observation, and is the bas...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 梁冠辉薛宇欢周东旭周兴华厉峰
Owner THE FIRST INST OF OCEANOGRAPHY SOA
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