海道测量中几种水位改正方法的比较与分析

Comparison and Analysis of Water Level Corrections in Hydrographic Surveys

针对多波束测深易出现的因水位改正不完善导致的相邻测深条带间的拼接断层,分别采用天文潮预报、基于余水位配置的海洋潮汐推算以及基于日平均海面订正的海洋潮汐推算等方法进行水深测量水位改正。结果表明,后两种方法均适用于多波束水深测量水位改正。

In order to weakening the join fault between the adjacent sounding swaths in multibeam bathymetric survey, which was caused by the imperfection of the water level correction, several methods such as the astronomical tide forecast, the ocean tide calculation based on the residual water level collocation and the ocean tide calculation based on the modification of the daily average sea surface were used to calculate the correction of the water level. The result indicated that the latter two methods were suitable for the correction of the water level in multibeam bathymetry.