地形导航多波束测深综合效应的邻域改正技术  

Neighborhood correction technique for Coupling effects of multi-beam bathymetry

作　　者：于家成 姜凯文 赵红颖[2] YU Jiacheng;JIANG Kaiwen;ZHAO Hongying(North China Institute of Science and Technology,Langfang 065201,China;Institute of Remote Sensing and Geographic Information Systems,Peking University,Beijing 100871,China)

机构地区：[1]华北科技学院电子信息工程学院,河北廊坊065201 [2]北京大学遥感与地理信息系统研究所,北京100871

出　　处：《全球定位系统》2023年第6期52-57,共6页Gnss World of China

基　　金：河北省高等学校科学技术研究项目(2C2016011);国家重点研发计划(2022YFF0904403);国家自然科学基金重点项目(42130104)。

摘　　要：针对多波束声纳测深系统中波束角效应和地形效应对水深测量的影响,提出了一种基于地形平均坡度水深数据改正的方法,以解决不同地势情况下造成的水深数据失真问题.首先根据多波束系统的测量原理建立了水深测量模型,与测量点周围8个点之间平均坡度估计该点处地形倾斜角,通过测量水深与海底地形之间的关系进行不同程度的水深改正,以获得测深处的真实水深.仿真过程中通过计算测点周围邻域8个方向的平均坡度,对地形平均坡度进行估计,并用实际某海域地形进行检验.结果标明:该技术应用性强,对水深测量中波束角与地形效应的影响具有明显的改正效果.Aiming at the influence of angular beam-width and terrain effect on bathymetry in multi-beam sonar system.A correction method of depth survey based on average slope of terrain is proposed to solve the problem of water depth data distortion caused by different terrain conditions.Firstly,a depth measurement model was established based on the principle of multi-beam system.The average slope between the measurement point and 8 points around was used to estimate the inclination angle of the terrain at that point.Different degrees of water depth correction were made by the relationship between depth measured and seabed to obtain the real depth at the survey point.During the simulation process,the average slope of the terrain is estimated by calculating the average slope in eight directions around the survey point.The method is verified with actual terrain.Results show that it is highly practical and has significant correction effects on the impact of beam angle and terrain effects in bathymetric survey.

关 键 词：邻域改正 多波束声纳测深 地形平均坡度 波束角效应 地形效应 

分 类 号：P204[天文地球—测绘科学与技术]