The invention relates to the technical field of surveying vessel dynamic draft data processing, and particularly discloses a surveying vessel dynamic draft calculation method based on shipborne GNSS geodetic height, comprising the following steps: S01, acquiring real-time shipborne GNSS geodetic height data; s02, correcting the GNSS geodetic height data based on synchronous data acquired by a multi-beam sounding system in real time so as to obtain necessary data only containing dynamic draft and water level of a surveying ship; s03, based on an ensemble empirical mode decomposition method, Gaussian white noise is added to a to-be-decomposed signal contained in the necessary data so as to change extreme point distribution of an original sequence, IMF components obtained each time are summed, and an average value is extracted; and S04, after ensemble empirical mode decomposition, extracting water level information according to the period of each characteristic component. The method improves the operation efficiency, reduces the project production cost and the technical level requirements of technicians, is simple in operation, and is high in dynamic draught calculation precision.
本发明涉及测量船动态吃水数据处理技术领域,具体公开了一种基于船载GNSS大地高的测量船动态吃水计算方法,包括以下步骤:S01、获取实时的船载GNSS大地高数据;S02、基于多波束测深系统实时采集的同步数据对GNSS大地高数据进行修正,以得到只包含测量船动态吃水和水位的必要数据;S03、基于集合经验模态分解方法在所述必要数据中包含的待分解信号中加入高斯白噪声,以改变原序列的极值点分布,并将每次获得的IMF分量进行求和,并提取平均值;S04、经过集合经验模态分解后,根据各特征分量的周期提取水位信息。该发明提高作业效率、降低项目生产成本和技术人员的技术水平要求,操作简单,动态吃水计算精度高。
Measuring ship dynamic draught calculation method based on shipborne GNSS geodetic height
一种基于船载GNSS大地高的测量船动态吃水计算方法
22.10.2024
Patent
Elektronische Ressource
Chinesisch
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