【摘要】 我国的海洋活动逐步向远海开展,对海洋观测技术提出了新的要求。基于GNSS的动态后处理差分测量技术,提出了一种新型远距离验潮系统。建立了基于PC104总线的模块化潮汐测量系统硬件,基于LabVIEW语言开发了与验潮系统硬件相匹配的软件,实现了潮汐测量过程中数据采集、数据处理和设备监控等功能。将该系统安装于国内某大型海洋浮标,在离岸约200km的海域开展了潮汐测量实验,通过GNSS数据解算、高程修正、滤波和潮位提取等数据处理步骤得到潮位数据。将系统测量的潮位结果与经典潮汐模型的潮位模拟数据相比,发现二者具有良好的一致性,整体潮位测量精度为4.6cm。更多还原

【Abstract】 China′s maritime activities are increasing in the open sea,and thus put forward new requirements on marine observation technology.A new tide gauge system that can be used in open sea is proposed based on the dynamic post-processing differential GNSS measurement technology.The modular hardware of this tide gauge system is based on the PC104 bus,the software for it is developed with LabVIEW,and the system can implement data acquisition,data processing and equipment monitoring.A test experiment for the tide gauge system was carried out on a large buoy in an offshore area being about 200 km away from coast.Tidal levels are obtained through data processing such as GNSS data solution,elevation correction,filtering and tidal level extraction.Comparison between tidal levels measured by the system and those calculated from numerical tide model shows that these two have good consistency and the accuracy of the tide level from the tide gauge system is 4.6 cm.更多还原