整平船声呐测距对检测精度的影响.

In the leveling construction of gravel bed of Dalian Bay subsea tunnel, sonar system plays an important role, which can accurately detect the laying quality of gravel bed, but the measurement accuracy of sonar is easily affected by ranging. In order to study the influence degree of different ranging on sonar in water and determine the sonar ranging range that is most suitable for the acceptance of the leveling ship, this paper uses the acceptance method of fully lifted gravel bed of the leveling ship to analyze the influence degree of different ranging degrees of sonar in the leveling ship on the acceptance accuracy by changing the height of sonar ranging in water, so as to obtain the optimal ranging range of sonar in water during the acceptance. The conclusions obtained are used to provide a basis for subsequent gravel bed leveling construction and gravel ridge acceptance of pipe sections. [ABSTRACT FROM AUTHOR]