天津市陆海坐标系统一转换研究

依托国家首批测绘地理信息公益性行业科研专项《天津市陆海一体化地理信息服务平台建设研究》,收集了天津市陆域、海域各坐标系及陆域、海域控制网资料,选取了坐标转换模型和坐标重合点,进行了坐标转换参数计算,确定了天津市陆、海坐标系统一转换关系并评定了转换精度,选取了检测点对坐标转换精度进行了检测,实现了天津市陆海坐标系的统一转换。

Study on the Transformation of Coordinate System Integrating Land and Sea in Tianjin

This study is supported by the first batch of the national public sector special research of surveying and mapping geographic information "The study on the construction of the platform of geographic information service integra-ting sea and land in Tianjin”. In this paper,firstly the information of the coordinate system and the control network of sea and land of Tianjin are collected,then the coordinate transformation model and coordinate coincidence points are select-ed ,thirdly the coordinate transformation parameters are calculated and the transformation relationship of coordinate system of Tianjin land and sea is determined,then the accuracy of the transformation is evaluated and detected,finally the unity of Tianjin land and sea coordinate system transformation has been realized.