| 同步改正法平均海面传递应用于海南岛礁测绘的探讨 |
| Discussion on the application of synchronous reduction method to the reef surveying and mapping in Hainan |
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| DOI： |
| 中文关键词: 岛礁测绘 基准面传递 平均海面 同步改正 |
| 英文关键词:Reef surveying and mapping Datum level transfer Mean sea level Synchronous Reduction Method |
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| 中文摘要: |
| 同步改正法因其特点和优势被广泛应用于平均海面传递，文中从平均海面的理论定义和实际计算两方面出发，对同步改正平均海面传递法原理进行了论述。利用海南岛周边的长期验潮站数据，按单站传递和多站组网传递分别分析了同步改正平均海面传递的规律。结果表明，单站传递同步观测10天能满足岛礁测绘对垂直基准面精度的要求，采用多站组网传递能较明显地减少同步时长较短时的极限误差。当采用多站组网平均海面传递同步观测5天，其极限误差可达10cm以内，建议在同步观测时间有限时采用该方法。结合还南岛验潮站和岛礁分布情况，同步改正平均海面传递法应用于海南岛礁测绘是可行的。 |
| 英文摘要: |
| Due to its characteristics and advantages,The synchronous reduction method is widely used in average sea surface transfer. Based on the theoretical definition and practical calculation of mean sea level（MSL）, the paper discussing the principle of MSL transfer method for synchronous reduction.Using the data of long-term tide stations around Hainan, the law of synchronous correction of average sea surface transfer is analyzed according to single station transmission and multi-station network transmission respectively. The results show that the single station transmitting synchronous observation for 10 days can meet the requirements of the vertical datum level accuracy of reef surveying and mapping, and the multi-station network transmitting can obviously reduce the limit error of the short synchronization time. When multi-station network is used to conduct mean sea surface transmission synchronous observation for 5 days, the limit error can be less than 10cm ,so we suggest that this method can be adopted when the synchronous observation time is limited.Combined with the distribution of tide stations and features in Hainan, it is feasible to apply the synchronous reduction method to the reef surveying and mapping in Hainan. |
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