摘要
针对卫星测高定标场中地面设备的高程基准相互独立的问题,选定ITRF参考框架进行高程基准的建立与统一。介绍了通过沿岸GPS参考站建立ITRF2008下的高程基准,以及分别利用水准仪和GPS浮标将验潮仪、海洋学阵列的高程基准进行统一的方法。在为期4天的静水试验中,将验潮仪、GPS浮标的高程基准统一到ITRF2008下,两种设备不同时段对水位测量差值的不确定性在3mm量级,初步验证了利用本文方法能够实现高程基准的有效统一。
The elevation datums of in-situ devices in calibration site of satellite altimetry were independent from each other.To solve this problem,International Terrestrial Reference Frame was chosen to establish and unify the elevation datums. The methods of establishing the elevation datum under ITRF 2008 through coastal GPS reference stations,and elevation datum unification of the tide gauge and the oceanographic mooring array using the leveling instrument and the GPS buoy separately were introduced.In a lentic experiment lasted for 4 days,the elevation datums of the tide gauge and the GPS buoy were unified under ITRF 2008. The results of measuring water level in different periods showed that the uncertainty of difference between two kinds of devices was about3 mm,which inferred the validity of the introduced method preliminarily.
出处
《海洋测绘》
CSCD
2016年第2期50-53,共4页
Hydrographic Surveying and Charting
关键词
高度计定标
验潮站
GPS浮标
高程基准
国际地球参考框架
altimeter calibration
tide gauge
GPS buoy
elevation datum
International Terrestrial Reference Frame
