城市不同坐标系下的面积差异分析——以宁波市为例  

Analysis of the area difference of different coordinate systems:taking Ningbo city as an example

作　　者：符华年 张旭东 汪燕林 FU Huanian;ZHANG Xudong;WANG Yanlin(Ningbo Technology Institutle of Surveying and Remote Sensing,Ningbo 315042,China;Zhejiang Engineeing Survey and Design Intiute Group Co.,Ltd.,Ningbo 315012,China)

机构地区：[1]宁波市测绘和遥感技术研究院,浙江宁波315042 [2]浙江省工程勘察设计院集团.有限公司,浙江宁波315012

出　　处：《测绘通报》2021年第3期109-112,155,共5页Bulletin of Surveying and Mapping

基　　金：宁波市科技局软科学课题(2017A10066)。

摘　　要：针对国土和规划工作的融合问题,本文讨论了城市不同坐标系下的面积差异,从不同椭球、不同高斯投影面及不同中央子午线方面,采用了高斯投影和高程归化的计算公式,分析了面积变化的理论规律。结合宁波市实际情况,考虑城市中部、边缘及高山区域,选择了代表性的5个测区,基于现存的宁波城市不同坐标系及国家坐标系,比较了各种情况下的面积差异,指出其产生的主要原因,积极探索了自然资源系统下各业务板块融合期间的城市区域面积的统一计算方案。For the integration of land use and planning work,this paper discusses the area difference in different urban coordinate systems and analyzes the theoretical law of area change from the ways of different ellipsoids,different Gauss projection planes and different central Meridians,using the formulas of gauss projection and height reduction. According to the actual situation in Ningbo,considering the central part of the city,the edge of the city and the high mountain area,the paper selects five representative survey areas. Based on the existing Ningbo city coordinate system and the national coordinate system,the paper compares the area difference under various conditions and points out the main reasons and explores the unified calculation scheme of urban area during the merging of different business sectors under the natural resources system.

关 键 词：城市坐标系 高程归化 椭球面积 高斯投影面积 面积差异 

分 类 号：P218[天文地球—测绘科学与技术]