多波束测深系统误差分析及声速改正模型应用  

Error analysis of multi-beam sounding system and application of sound velocity correction model

作　　者：周祥运 ZHOU Xiangyun(Guangzhou Port Engineering Management Co.,Ltd.,Guangzhou 510000,China)

机构地区：[1]广州港工程管理有限公司,广东广州510000

出　　处：《经纬天地》2023年第2期13-16,共4页Survey World

摘　　要：声速测量对多波束测深系统测量精度具有重要影响,声速测量受环境影响较大,在不同物质环境下,声波的声速和传播方向存在较大差异。本文针对声速误差产生原因进行研究,引入自适应分层声线跟踪法、等梯度声线跟踪法等声速误差修正方法,并结合试验对两种方法在同一位置不同时段声速修正情况进行分析。结果显示:自适应分层声线跟踪法在全天各时段能更好地对声速进行还原,数据精度较好。The sound velocity measurement has an important influence on the measurement accuracy of multi-beam sounding system.The sound velocity measurement is greatly influenced by the environment,while the sound velocity and propagation direction of sound waves are quite different in different material environments.In this paper,the causes of sound velocity error are studied and some sound velocity error correction methods,such as the adaptive layered ray tracing method and the equal gradient ray tracing method,are both introduced,and the sound velocity correction of the two methods in the same position and during different time periods is analyzed in combination with experiments.The results show that the adaptive layered ray tracing method can better restore the sound speed at all times of the day and the data accuracy is better.

关 键 词：声速测量 多波束测深系统 声速误差 

分 类 号：P229.1[天文地球—大地测量学与测量工程]