摘要
重庆市现有测绘基准体系存在较多问题,如坐标系统不统一,有些地方采用假设高程和近似高程系统。已有控制点施测时间久远、精度低、破坏严重,不能满足工程建设的需要,必须建立以CQCORS、似大地水准面为核心的重庆市现代测绘基准体系。本文主要介绍了建设重庆市现代测绘基准体系的必要性、相关理论、建设内容、实现方法、成果精度等。
There are many problems in ChongQing Survey Datum System, such as coordinate system is not uniform, some places use assumed elevation and approximate elevation system. The existing control point measurement time long, low precision,destroy serious,it cannot satisfy the needs of project construction, must establish CQCORS, Quasi-geoid as the core of the ChongQing Survey Datum System. This paper mainly discusses the necessity,theory,construction content, implementation method, product precision in the construction of ChongQing Modern Surveying Datum System.
出处
《城市勘测》
2013年第3期70-73,77,共5页
Urban Geotechnical Investigation & Surveying
关键词
现代测绘基准体系
CQCORS
重庆地方坐标系
似大地水准面精化
modern surveying datum system
Chongqing continuous operational reference system
Chongqing region coordinate system
quasi-geoid determination