In the underwater topographic surveying and mapping of large and medium-sized reservoirs,conventional methods mainly rely on data elevation feature matching,but they often cause significant errors due to differences in signal media,thereby affecting the accuracy of the surveying and mapping.In order to improve the accuracy of surveying and mapping,a method for underwater topographic surveying and mapping of large and medium-sized reservoirs based on a single beam strip sounder was proposed.The point elevation layout of a single beam strip depth sounder was carried out in the underwater area of large and medium-sized reservoirs,and the signal data error was corrected based on the calculation results of the difference in sound velocity data.The depth reference plane for underwater topographic maps was defined,and based on this,linear interpolation was performed on the gridded single beam signal data to complete high-precision underwater topographic surveying and mapping.The experimental results show that the surveying results obtained by the proposed method exhibit small differences in topography poles and high surveying accuracy,meeting the high-precision surveying and mapping requirements for the construction,operation,and maintenance of large and medium-sized reservoirs.
关键词
大中型水库/水下地形/单波束条带测深仪/地形图测绘/水库水下地形/测绘方法
Key words
large and medium-sized reservoirs/underwater topography/single beam strip sounder/topographic surveying and mapping/underwater topography of reservoirs/surveying and mapping methods
维普
万方数据