基于统一坐标系的多源数据入库方法设计  

Design of a Method for Multi-source Data Warehousing Based on the Unified Coordinate System

作　　者：汤曦 王义[1] TANG Xi;WANG Yi(China Railway Eryuan Engineering Group Co.,Ltd.,Chengdu 610031,China)

机构地区：[1]中铁二院工程集团有限责任公司,成都610031

出　　处：《高速铁路技术》2022年第6期52-56,共5页High Speed Railway Technology

摘　　要：对空间地理信息数据的快速获取和使用是铁路工程建设科学决策的基础,然而,不同时期、不同方法获取的形态数据存在坐标系统、高程系统和数据格式不统一的问题,导致不同形态数据不能有效利用。针对上述难题,本文提出将多源多时期的DLG、DEM、卫星遥感影像等数据放置在基于CGCS2000椭球地理坐标系的数据库进行数据管理,通过基于ArcGIS Engine的二次开发处理系统解决对同一区域的不同数据的坐标转换、格式转换等一系列问题,并在工程实践进行相应的精度验证。研究成果可为铁路工程建设及智能化应用地理空间信息数据提供技术支持。The rapid acquisition and use of spatial geographic information data is the basis for scientific decision-making in railway engineering construction. However,the morphological data obtained in different periods and by different methods are of inconsistent coordinate systems,elevation systems,and data formats,resulting in the ineffective use of different morphological data. In view of the above difficulties,this paper proposes to place multi-source and multiperiod DLG,DEM,satellite remote sensing images,and other data in the database based on CGCS2000 ellipsoidal geographical coordinate system for data management,and solve a series of problems such as coordinate transformation and format conversion of different data in the same area through the secondary development and processing system based on ArcGIS Engine,and verifies the relevant accuracy during engineering practice. The research results can provide technical support for railway engineering construction and intelligent application of geospatial information data.

关 键 词：地理信息系统 多态多源数据 坐标转换 数据入库 

分 类 号：U212.4[交通运输工程—道路与铁道工程]