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 the Hainan Island

作　　者：张亮[1] 车志伟[1] 张景凯[1] ZHANG Liang;CHE Zhi-wei;ZHANG Jing-kai(Haikou Marine Environment Monitoring Center of State Oceanic Administration,Haikou 570100,Hainan Province,China)

机构地区：[1]国家海洋局海口海洋环境监测中心站

出　　处：《海洋技术学报》2019年第5期73-77,共5页Journal of Ocean Technology

基　　金：国家海洋局南海分局海洋科学技术局长基金资助项目(180234)

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 d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 d,其极限误差可达10 cm以内,建议在同步观测时间有限时采用该方法。结合海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。Due to its characteristics and advantages,the synchronous reduction method has been widely used in average sea surface transfer.Based on the theoretical definition and practical calculation of mean sea level(MSL),this paper discusses the principle of MSL transfer method for synchronous reduction.Using the data of long-term tide stations around the Hainan Island,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 for synchronous observation for 5 days,the limit error can be less than 10 cm,so it is suggestd that this method can be adopted when the synchronous observation time is limited.Combined with the distribution of tide stations and features in the Hainan Island,it is feasible to apply the synchronous reduction method to reef surveying and mapping in the Hainan Island.

关 键 词：岛礁测绘 基准面传递 平均海面 同步改正 

分 类 号：P229[天文地球—大地测量学与测量工程]