基于高精度GNSS定位解算及姿态数据获取潮位研究

文中基于GNSS高精度定位解算成果中的高程数据,利用测船航行过程中实时采集的姿态数据进行涌浪补偿,并根据船舶每天的吃水变化将GNSS天线高调整为瞬时水面高;通过相邻水位站的比对获取GNSS高程与深度基准面的高差,对获取的瞬时水面高进行基准面变换,得到基于深度基准面的潮位值。针对以上技术路线进行了研究,并在工程中进行了验证,成果统计数据证明,提取的潮位满足规范要求,可在实践中应用推广。

Research on tidal acquisition based on high-precision GNSS positioning solution and attitude data

Based on the elevation data of GNSS high-precision positioning solution, this paper uses real-time attitude data collected during vessel navigation to compensate the surge, and adjusts the GNSS antenna height to the instantaneous water level according to the daily draught change of the vessel. The difference between GNSS elevation and depth datum is obtained by comparing the adjacent tide stations. and performs a datum transformation on the acquired instantaneous water level height to obtain tidal data based on the depth datum. The technical routes are studied and verified in the project. The statistical data of the results show that the tidal data extracted meets the specification requirements and can be applied and popularized in practice.