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- 2018
中短期验潮站验潮零点不规则漂移精密处理
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Abstract:
压力验潮仪是海洋深度测量最重要的辅助传感器之一，中、短期验潮站一般采用压力验潮仪定点布设并实现对沿岸水深测量的水位控制。受复杂海洋作业环境的综合影响，在工程实践中发现验潮零点极易出现不规则漂移，是制约水深测量成果精度的主要因素之一，但相关的探测与校正精密理论研究滞后。分析了验潮零点不规则漂移的形成机理，提出了漂移探测及校正的精密处理数学模型。通过对定海长期站和港鑫临时站以及大丰长期站和三丫子临时站等近一个月实测同步验潮数据的处理，分析了两种日平均海面计算方法对不同周期分潮的削弱效果，结果表明，本文提出的新模型适用于验潮零点不规则漂移的精密处理，经零点校正后，港鑫、三丫子等临时验潮站的水位观测数据精度由dm级提高至cm级
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