多波束滤波理论与实践效果分析

Theory and practical effects of multi-beam filtering

多波束测深系统可获得精细、全面的水下地形数据,但数据处理繁杂、周期较长且数据质量因处理水平不同而产生不可忽略的差异,因此有必要使用软件中的滤波工具辅助进行多波束的数据处理。针对滤波理论繁杂难解、滤波方法和效果不尽相同的问题,以QINSY软件与亿点通软件常用的滤波工具与工程实践相结合分析滤波工具在疏浚测量中的效果,得出相应疏浚工程的滤波选择,从而缩短了多波束数据处理周期,减小了人工处理数据而产生较大差异性的概率。

The multi-beam bathymetry system can obtain fine and comprehensive data on underwater topography. Nevertheless, such data are complicated and time-consuming to process, and the differences in data quality caused by different processing levels cannot be ignored, which necessitates the use of the filtering tools in the software to assist with multibeam data processing. To address the problems of complicated and difficult filtering theory and different filtering methods and effects, this paper analyzes the effect of filtering tools in dredging surveys by combining the commonly used filtering tools in the QINSY software and the Yidiantong software with engineering practice. Furthermore, the paper determines the filter selection for corresponding dredging projects. In this way, the paper shortens the multi-beam data processing cycle and reduces the probability of large differences caused by manual data processing.