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为了获得稳定的平均海平面,必须要有长期验潮站的水位观测数据,而长期验潮站的布设密度有限,通常在测量期间布设短期或临时验潮站,所以可以利用长期验潮站的信息,用传递的方法推估得到稳定的平均海平面。该文改进了曲线比较法,用以传递推估短期或临时验潮站的平均海平面。由于曲线比较法的精度取决于两验潮站潮汐变化的相似性,因此,先用离散Frechet距离的方法判断两验潮站短期同步海平面的相似性,再利用基于MATLAB的曲线比较法传递平均海平面,并通过实例证实了该方法的可靠性。
In order to obtain a stable average sea level, there must be long-term tide station water level observation data, while the long tide tide station layout density is limited, usually during the measurement period to set up short-term or temporary tide station, so you can use the long tide station Information, using the transfer method to estimate the stable average sea level. The paper improves the curve comparison method to pass estimates of the average sea level for short-term or temporary tide gauges. Because the accuracy of the curve comparison method depends on the similarity of the tidal changes between two tide tidal stations, the similarity of the short-term synchronous sea level at two tide gauge stations is first estimated by the discrete Frechet distance method, and then the average Sea level, and the reliability of the method is verified by an example.