underwater topography

Geographical information system(GIS) are drawing more and more attention in the field of underwater topography analysis because of the powerful spatial analysis and spatial database management.

GIS强大的空间分析和空间数据库功能,提供了其它研究手段难以解决的河道水下地形冲淤变化分析及空间分布等问题的有力工具。

Following an example of practical large scale underwater topography survey, the operation process is demonstrated and some data are analyzed.

简要介绍了DGPSRTK的基本原理和水下地形测量作业流程,以实际大比例尺水下地形测量为例,介绍了利用该技术进行工程实测的过程,通过对实测数据成果的分析,得出一些有益的结论。

The underwater topography in the Prydz Bay is rugged and rough.

本文根据普里兹湾近岸的中山站附近海域概略水深 ,研究分析了地形基本概况 ,崎岖不平的中山站近海湾部水下地形 ,沿其湾顶部轴线SN向形成了一条绵延弯曲的水深达 80 0m以浅的海底峡谷 ,通往冰盖底部。

Compared with modeling on ground terrain, modeling on underwater terrain is a converse process.

与陆地地形建模相比,水下地形的多分辨率建模是一个逆向的过程,它通过较为少量但非常有价值的数据来建立水下地形的拓扑结构。

At present, dredging and harnessing of the rivers and lakes is one of the national major projects which are pushed on by government, and underwater terrain survey is an important measurement means.

大江大河的疏浚、治理是目前国家大力推进的一项事业，水下地形的观测是其中一项重要的测量手段。

A simulation model for the radar backscattering cross section of the sea surface has been developed based on the radar imaging mechanism of underwater bottom topography.

根据星载合成孔径雷达 (SAR)浅海水下地形和水深成像机理 ,建立了浅海水下地形和水深雷达后向散射截面仿真模型。

Based on Bragg scattering theory, the three dimesion model for the synthetic aperture radar(SAR)imaging of underwater bottom topography in the tidal waters is presented in the paper.

本文提出了一个在三维空间上潮汐流与海面共同作用区的水下地形在合成孔径雷达(SAR)图像上的“可视”化原理,得出水下地形成像的综合表面模式,探求在雷达分辨单元内中等尺度的表面波成倾斜对雷达后向散射的贡献。

There is important actual meaning in how to raise the sounding precise of bathymetric surveying.

随着长江航运事业不断发展,如何进一步提高水下地形测量中测深精度,具有重要的现实意义,本文仅就长江航道水下地形测量中的深度误差谈一点看法。

Based on the experiences of surveying underwater relief map and calculating the volume of the big reservoir,the paper details the feasibility,work flow and key point of the technique scheme of surveying underwater relief map and calculating the volume of reservoir by GPS RTK working together with sounding instruments.

通过对某大型水库水下地形图绘制以及库容测算的成功试验,详细论述了基于GPSRTK配合测深仪绘制水库水下地形图库容测算的技术方案的可行性、工作流程和关键点。

The Treating on Screen for Water-level in the Underwater Topography Survey

河流水下地形测量中水位的图上处理

Underwater Topographic Survey Using RTK Technology Without Tide Gauge

无验潮模式下的RTK水下地形测量

Design of Underwater Terrain Survey System Based on Medium Wave Data Link DGPS;

中波数据链DGPS水下地形观测系统

Application Research of the GPS on Underwater Topographic Survey

GPS在水下地形测量中的研究与应用

Application of JSCORS in Underwater Terrain Surveying in Ge Lake

JSCORS在滆湖水下地形测量中的应用

On exploration for underwater topographic survey of RTK

基于RTK的水下地形测量系统的探讨

GPS in the underwater topographic survey engineering

GPS在水下地形测量工程中的应用

Application of GPS-RTK in Subaqueous Topographic Survey

GPS-RTK技术在水下地形测量中的应用

Simulation study on SAR shallow water bathymetry

浅海水下地形的SAR遥感仿真研究

The Applications of GPS-RTK in Topographic Survey at Lalang Hydropower Station

GPS-RTK在拉浪水电站水下地形测量中的应用

a natural body of running water flowing on or under the earth.

地上或地下的自然形成的流动水体。

drawdown [groundwater]

水位下降〔地下水〕

Elaborate Spatial Distribution of Precipitation of ChongQing on Terrain;

起伏地形下重庆降水精细的空间分布

Earthquake Induced Interior Hydrodynamic Force on Rectangular Hollow Bridge Pier

地震下矩形空心桥墩内部动水力分析

Relation between formation of salt-fresh water and water-bearing medium in the plain of Su Bei

苏北平原地下咸淡水形成与含水介质的关系

Bonded type membrane waterstop strip for underground movement joint

地下工程变形缝粘贴式卷材止水带防水新技术

Research on Relationship between the Ground Deformation and Dynamic Groundwater Level in Handan,Hebei

邯郸地形变与地下水位动态相互关系研究

Research on Prior Map Data Processing Based Terrain Aided Navigation Methods for Underwater Vehicles;

基于先验地形数据处理的水下潜器地形辅助导航方法研究