声速剖面对多波束测深影响的新认识

介绍了声速剖面对多波束测深的影响，并得出了当声速剖面的某一节点偏大时，对边缘多波束的影响使水深偏浅，而对中央部分的波束使水深偏深；当声速剖面的某一节点偏小时，结果反之。该结果对野外资料采集及声速剖面编辑具有特别实际的指导意义。最后指出：当声速剖面出现误差时，中央波束的测深精度并不一定比其他波束的测深精度高。

New Idea for the Accuracy of Multibeam Affected by SVP

This article introduces the result of multibeam echo sounding affected by SVP.The paper points out when the value of a certain node of SVP become larger,the depth of outer beam is shallower,and the depth of central beam is deeper;when the value of SVP's node becomes smaller,the result is on the contrary.The results turn to have especially actual guidance for field data acquisition and SVP editing.Finally,while sound velocity error appears at node,the accuracy of central beam is not always better than other beams.