多波束水深测量中声速误差的楔形表示法  

A Wedge Notation for Sound Velocity Error in Multibeam Sounding

作　　者：金绍华[1,2] 孙文川[1] 暴景阳[1,2] 肖付民[1,2] 崔杨[1,2] 

机构地区：[1]海军大连舰艇学院海洋测绘系,辽宁大连116018 [2]海洋测绘工程军队重点实验室,辽宁大连116018

出　　处：《海洋测绘》2015年第3期11-15,共5页Hydrographic Surveying and Charting

基　　金：国家自然科学基金(41074002)

摘　　要：针对多波束水深测量时声速剖面对测深精度的控制问题,提出了一种声速误差楔形表示法。基于两个声速剖面,采用常梯度声线跟踪法分别对不同声速剖面下换能器照射区域内水深点位置进行模拟计算,最后通过比对得到波束覆盖范围内各水深点对应的测深误差估计值;将其采用楔形图进行表示,并对超出水深限差的水深区域进行标注,为评价声速剖面对水深精度的控制能力提供参考。Aimed at the effects of sound velocity profiles on sounding accuracy in multibeam sounding, a wedge notation for sound velocity error is presented.Based on the two sound velocity profiles, the sounding point positions in different transducer radiation areas are calculated simulatively using the constant gradient sound ray tracing method, and the corresponding estimated sounding error of each sounding point is gained in the beam coverage through comparison, which is noted with a wedge diagram, and the sounding area beyond the sounding limit error is noted to provide reference in evaluating the effects of the sound velocity profile on the sounding accuracy.

关 键 词：声速剖面 声速误差 楔形表示 测深精度 测深误差估计 

分 类 号：P229[天文地球—大地测量学与测量工程]