不同水下特征对三维成像声呐扫测影响的室内试验研究

针对三维成像声呐相关检测指标缺乏试验验证的问题,通过室内模型探讨不同尺寸的立方体与圆柱体试块、不同边界材质和带有缺陷的圆柱形木桩对三维成像声呐扫测结果的影响。研究表明:三维成像声呐系统可有效识别到厘米级的不同形状物体;在对光滑且质地坚硬物体扫测时,声波信号会发生镜面反射导致无法获取有效数据;可有效识别尺寸大于等于5 cm的缺陷并判定缺陷形状和位置。研究成果可为实际工程应用提供参考依据。

Indoor experimental study on influence of different underwater characteristics on 3D imaging sonar

In the view of the lack of experimental verification of the 3D imaging sonar-related detection indicators,we carry out an indoor model experiment to explore the effects of different-sized cube and cylinder test blocks,different boundary media and defective cylindrical stakes on 3D imaging sonar.The reseult shows that the 3D imaging sonar system can effectively identify objects of different shapes in centimeters;when scanning for smooth and hard objects,the acoustic signal will be specularly reflected and the effective data cannot be obtained;the defects of 5 cm and above can be effectively identified.The research result may serve as reference for the practical engineering applications.