topographic data

By collecting large number of data about rural society, economy, and water resource, water environment, as well as topographic condition, this paper has the rural water environment economy system database set up, with the technique of matter-element analysis method and GIS.

采集农村社会、经济、水资源和水环境等方面的海量数据和地理物貌，利用物元模型和GIS技术构建农村水环境经济系统数据库。

In this paper the principle of GPS underwater topographic survey without tide gauge is first introduced, then the methods of data collection and processing are discussed.

介绍了GPS无验潮水下地形测量的原理，探讨了其数据采集与处理方法，并对GPS无验潮水下地形测量的精度和特点作了说。

It is possible for the vector topographic data to remain many problems after importing to personal database. So the author did some research on how to check the problems and how to combine the data-check in the database and the pretreatment before importing to database.

如何通过各种方式检查出矢量地形数据入库后仍存在的问题，如何将对矢量地形数据库的GIS数据检查和对原始矢量地形数据的检查进行统一安排，作者也提出了一些有价值的见解。

The main job is to collect the soil maps, district maps, topographic maps and other related socio-economic data of the study area.

主要是收集研究区的土壤类型图、行政区划与地形图等相关图件，以及相关的社会经济数据。

The beach deformation and erosion during 9914 typhoon against Xiamen Island are studied in the paper, according to both the repeated topographic survey of the beach profiles of Xiamen Island and the determined data of tidal level and wind elements for 9914 typhoon.

根据9914号台风发生前后对厦门岛滨岸海滩剖面地形的重复测量结果及有关台风要素和潮位的实测资料，探讨了台风袭击厦门岛期间海滩的变形特征和侵蚀状态。

Programme of collecting topographic data for PC-1500 Computer in cooperation with comparator

PC－1500机配合坐标仪的地形数据采集程序

Analysis of Spatial Data for Simulating the Development Process of Topographic Feature of Watershed

模拟流域地貌发育过程的空间数据获取与分析

Nowadays the most common used methods for extracting small range topographic data are the total-station-based ground surveying and the photography-theodolite-based terrestrial photogrammetry.

目前常用的小范围地形数据采集方法主要有基于全站仪的地面测量方法和基于摄影经纬仪的地面摄影测量方法。

The design and development of the topographic data extraction information system based on non-metric digital imagery.

基于 非 量测数码影像的地形数据采集信息系统设计与开发.

1 ∶ 50 000 topographic database is one of the most important databases in National Fundamental Geographic Information System, and it is also the database platform in National Spatial Data Infrastructure. It has substantial data contents and brings huge engineering work on database construction.

国家基础地理信息系统1∶50000数据库是构建数字中国空间地理框架的重要组成部分，1∶50000地形数据库作为1∶50000数据库的重要数据内容，是数据内容复杂、建设难度最大的数据库。