声速对多波束测量系统精度的影响

Effect of the Sound Speed on the Accuracy of the Multi-beam Measurement System

多波束测量系统具有高精度全覆盖的特点,目前在深水测量项目中,多波束测量系统的运用越来越广泛。由于多波束测量系统是根据声线追踪来确定波束点的空间位置,因此声速的改正对于多波束测量系统的精度起着决定性作用。阐述声速改正对多波束测量系统精度的影响,并结合实际工程案例提出声速改正的关键要点及方法,减少声速带来的误差影响,保证测量多波束数据的精准度。

Multi-beam measurement system has the characteristics of high precision and full coverage,in the current water depth measurement project,multi-beam measurement system is more and more widely used. Because the multibeam measurement system determines the spatial position of the beam point according to the sound line tracking,the correction of the sound speed plays a decisive role in the accuracy of the multiple beam measurement system. This paper mainly expounds the effect of sound speed correction on the accuracy of multi-beam measurement system,and puts forward the key points and methods of sound speed correction combined with the actual engineering cases,so as to reduce the error influence of sound speed and ensure the accuracy of measuring multi-beam data.