Data quality control method of buoy automatic monitoring system

A quality control method and automatic monitoring technology, which can be used in complex mathematical operations and other directions to solve problems such as increased uncertainty in buoy data quality

Inactive Publication Date: 2018-12-18
XIAMEN UNIV
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  • Claims
  • Application Information

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Problems solved by technology

However, due to the continuous operation of buoys for many years, some parameters will drift. In addition, the sea environment is complex, and affected by factors such as currents, waves, shipping, and bio-fouling, the uncertainty of the quality of buoy automatic monitoring data has also greatly increased.

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  • Data quality control method of buoy automatic monitoring system
  • Data quality control method of buoy automatic monitoring system
  • Data quality control method of buoy automatic monitoring system

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Embodiment Construction

[0028] The following examples will further illustrate the present invention.

[0029] Embodiments of the present invention include the following steps:

[0030] 1) Data quality analysis. Before data quality control, a simple analysis of the data quality is required. Data quality analysis is an important part of the data preparation process in the buoy data feature analysis and is the premise of data preprocessing;

[0031] The data quality analysis includes the following methods:

[0032] (1) Missing value analysis: missing data mainly refers to the missing data of monitoring data due to various reasons, including the missing of records and the missing of a certain field information in the records, which are generally represented by data that is much larger or smaller than the observed value. The missing value analysis is shown in Table 1, and -6999 is the missing value.

[0033] Table 1

[0034]

[0035] (2) Repeated data analysis: the data has repeated measurement, one...

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Abstract

A method for control data quality of automatic buoy monitoring system relates to an automatic buoy monitoring system. Data quality analysis, before data quality control, needs to analyze the data quality. Data quality analysis is an important link in the data preparation process of buoy data characteristic analysis, and is the prerequisite of data pretreatment. Outlier elimination method, aiming at the outlier obtained by the automatic monitoring system; on-site validation and evaluation: validate and evaluate the monitoring parameters of the buoy through on-site sampling and laboratory measurement, especially the data measured by biological and chemical probes, to ensure the reliability of the data; The comparison parameters mainly include NO3, DO, Chl and CDOM. Water samples can be collected at the place where the buoys are placed and brought back to the laboratory for analysis; then the correlation curve between the laboratory analysis data and the buoy data is drawn to judge the reliability of the buoy data from its distribution trend.

Description

technical field [0001] The invention relates to a buoy automatic monitoring system, in particular to a data quality control method of the buoy automatic monitoring system. Background technique [0002] The buoy automatic monitoring system is one of the effective technical means for continuous monitoring of ocean water quality. Using the continuous observation of buoys, people have transformed the characteristics of ocean changes in the monitored sea area from qualitative descriptions in the past into quantitative and accurate measurements; at the same time, with the long-term accumulation of buoy monitoring data, it will also provide a basis for future research on large-scale temporal and spatial changes in the marine environment. Provide valuable resources. It can be said that a set of reliable, accurate and effective monitoring data sets is the basic basis for evaluating the quality of the marine environment and improving the ability to manage the marine environment. How...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/18
CPCG06F17/18
Inventor 张彩云
Owner XIAMEN UNIV
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