摘要
为了研究内波对多波束测深的影响,通过对内波建模,分别对四个区间的声线跟踪情况进行了研究分析。在此基础上,推导了针对曲线型梯度结构的声线跟踪模型,并根据该模型进行了仿真分析。仿真简单模拟了采用常梯度声线跟踪模型对曲线型梯度结构声速剖面进行声速改正的声线跟踪过程。采用仿真数据绘制了声线跟踪前后的声线示意图,并对归算前后的波束脚印位置进行了比较分析。仿真结果说明内波会给多波束的边缘波束带来大量尖峰状的浅点,而这些浅点难以用传统的声速改正模型消除。推导的针对曲线型梯度结构的声线跟踪模型可为内波的进一步研究提供理论依据,最后对未来的研究进行了展望。
In order to study the influence of internal wave on multibeam echo sounding,the internal wave modeling is used to analyze the acoustic ray-tracing in four sections in this paper.On this basis,the acoustic ray-tracing model for the curved gradient structure is deduced,and the simulation analysis is carried out according to the model. The simulation process is used to simulate the sound velocity ray-tracing process of the velocity gradient of the curved gradient structure using the constant gradient acoustic ray-tracing model. The simulation data are used to drawthe sounding figures and the beam footprints are compared and analyzed. The simulation results showthat the inner wave will bring a large number of spikes in the edge beam,which can not be eliminated by the traditional sound velocity correction model.The acoustic ray-tracing model for curved gradient structure can provide theoretical basis for further study of internal waves.In the end,the future research direction is prospected.
作者
朱小辰
许正君
占祥生
韩政
ZHU Xiaochen;XU Zhengjun;ZHAN Xiangsheng;HAN Zheng(91650 Troops,Guangzhou 510000,China)
出处
《海洋测绘》
CSCD
2018年第3期17-20,共4页
Hydrographic Surveying and Charting
关键词
多波束测深
内波
声线跟踪
脚印位置计算
声速改正
multibeam echo sounding
internal wave
acoustic ray-tracing
footprint depth determination
soundvelocity correction
