论文阅读笔记_001 Micro-Bathymetry Data Acquisition for 3D Reconstruction of Objects on the sea floor

这篇博客解析了2017年IEEEOceans会议上的一篇论文,关注海底3D物体重构中微地形数据的获取方法,包括任务规划范例和声呐数据处理技术,如BDI、MaxsalongDOA和WMT。重点介绍了REMUS-100平台的多波束声呐配置及数据处理流程。

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论文阅读笔记的编号是三位数,希望自己能够坚持下来写到999。

论文来源介绍

这次记录的论文是一篇发表于 2017 年的 IEEE Oceans 会议论文。作者是 Diogo.Machado, Thomas Furfaro , Samantha Dugelay ,意大利人,属于北约(NATO)科学与技术组织,海事研究中心。

Machado, D., Furfaro, T., Dugelay, S., & Ieee. (2017). Micro-Bathymetry Data Acquisition for 3D Reconstruction of Objects on the Sea Floor. In Oceans 2017 - Aberdeen.

研究目的

本文的题目是海底目标3维重建过程中的微地形数据采集(Acquisition),由于AUV挂载的多波束声呐横向覆盖范围有限且航行器存在导航偏差,单次的航行一般不能完全覆盖目标物体。针对以上问题作者提出了一种兼顾探测效率和覆盖面积的任务规划方法(范例),除此之外本文还介绍了一些适用于多波束声呐的数据处理方法。

航行器基本情况介绍

文中采用以REMUS-100为载体,通过LBL系统进行水下导航。AUV搭载的有:ADCP、CTD、双频侧扫声呐和一个声学调制解调器。

REMUS 100
此外,还搭载了一个多波束声呐(文章的重点研究对象)

Please revise the paper:Accurate determination of bathymetric data in the shallow water zone over time and space is of increasing significance for navigation safety, monitoring of sea-level uplift, coastal areas management, and marine transportation. Satellite-derived bathymetry (SDB) is widely accepted as an effective alternative to conventional acoustics measurements over coastal areas with high spatial and temporal resolution combined with extensive repetitive coverage. Numerous empirical SDB approaches in previous works are unsuitable for precision bathymetry mapping in various scenarios, owing to the assumption of homogeneous bottom over the whole region, as well as the limitations of constructing global mapping relationships between water depth and blue-green reflectance takes no account of various confounding factors of radiance attenuation such as turbidity. To address the assumption failure of uniform bottom conditions and imperfect consideration of influence factors on the performance of the SDB model, this work proposes a bottom-type adaptive-based SDB approach (BA-SDB) to obtain accurate depth estimation over different sediments. The bottom type can be adaptively segmented by clustering based on bottom reflectance. For each sediment category, a PSO-LightGBM algorithm for depth derivation considering multiple influencing factors is driven to adaptively select the optimal influence factors and model parameters simultaneously. Water turbidity features beyond the traditional impact factors are incorporated in these regression models. Compared with log-ratio, multi-band and classical machine learning methods, the new approach produced the most accurate results with RMSE value is 0.85 m, in terms of different sediments and water depths combined with in-situ observations of airborne laser bathymetry and multi-beam echo sounder.
02-18
> 位置:path (第 109 行) 位置: TMD (第 6 行) Welcome to TMD: Tidal Model Driver! TMD FILE NAME/FORMAT CONVENTION (MUST follow!): 1. TMD supports format of models downloaded from: , http://volkov.oce.orst.edu/tides http://www.esr.org/polar_tides_models 2. Elevation file name should start from 'h'. 3. Transport file name should start from 'UV'. 4. Bathymetry grid file name should start from 'g'. 5. If grid is uniform in km string 'km' should be found either in model file names or in grid file name. 6. For any tidal model a control file starting from 'Model_*' ib subdirectory TMD/DATA should be given. The file MUST contain 3 lines: <Elevation file name> <Transport file name> <Bathymetry grid file name> If the model files are NOT in TMD/DATA, exact path should be included. If the model files are in TMD/DATA, no path in file names is needed. If grid is uniform in km the NAME of function converting lat,lon to x,y and back should be provided in 4-th line, for example:'xy_ll' for Arctic or 'xy_ll_S' for Antarctic The model is on uniform grid in lat,lon Loading TMD (Tidal Model Driver)...done See button tips for HELP. Type 'help tmd_extract_HC','help tmd_tide_pred', 'help tmd_ellipse', Type 'help tmd_get_coeff','help tmd_get_ellipse', if you wish to use the scripts instead of GUI. Model and files are in D:\TMD2.5\DATA\MyArea\SCS\h_zhanjiangbay and D:\TMD2.5\DATA\MyArea\SCS\uv_zhanjiangbay. Bathymetry grid file is in D:\TMD2.5\DATA\MyArea\SCS\grid_zhanjiangbay. Input file examples are in LAT_LON Programmed by: Lana Erofeeva: TMD release 2.5
11-29
内容概要:本文档是一份关于交换路由配置的学习笔记,系统地介绍了网络设备的远程管理、交换机与路由器的核心配置技术。内容涵盖Telnet、SSH、Console三种远程控制方式的配置方法;详细讲解了VLAN划分原理及Access、Trunk、Hybrid端口的工作机制,以及端口镜像、端口汇聚、端口隔离等交换技术;深入解析了STP、MSTP、RSTP生成树协议的作用与配置步骤;在路由部分,涵盖了IP地址配置、DHCP服务部署(接口池与全局池)、NAT转换(静态与动态)、静态路由、RIP与OSPF动态路由协议的配置,并介绍了策略路由和ACL访问控制列表的应用;最后简要说明了华为防火墙的安全区域划分与基本安全策略配置。; 适合人群:具备一定网络基础知识,从事网络工程、运维或相关技术岗位1-3年的技术人员,以及准备参加HCIA/CCNA等认证考试的学习者。; 使用场景及目标:①掌握企业网络中常见的交换与路由配置技能,提升实际操作能力;②理解VLAN、STP、OSPF、NAT、ACL等核心技术原理并能独立完成中小型网络搭建与调试;③通过命令示例熟悉华为设备CLI配置逻辑,为项目实施和故障排查提供参考。; 阅读建议:此笔记以实用配置为主,建议结合模拟器(如eNSP或Packet Tracer)动手实践每一条命令,对照拓扑理解数据流向,重点关注VLAN间通信、路由选择机制、安全策略控制等关键环节,并注意不同设备型号间的命令差异。
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