基于LiDAR的城市坐标系精度评估及应用  

Accuracy evaluation and application of urban coordinate system based on LiDAR

作　　者：胡耀锋[1] 胡欣然 HU Yaofeng;HU Xinran(Institute of Guangzhou Urban Planning and Design Survey Research,Guangzhou 510060,China)

机构地区：[1]广州市城市规划勘测设计研究院,广东广州510060

出　　处：《测绘通报》2020年第10期101-105,共5页Bulletin of Surveying and Mapping

基　　金：智慧广州时空信息云平台建设项目(GZIT2016-A5-147)。

摘　　要：本文以广州为例,阐述了高斯投影变形的传统方法。结合广州市利用高精度机载LiDAR和广州2000坐标系的建设项目,介绍了高精度LiDAR数据获取及DEM制作流程,以及设计了高斯投影变形数据处理的两种关键技术方法,并且开发了自动化处理软件,提出了城市坐标系精度评估新方法。Taking Guangzhou as an example,this paper expounds the traditional method of Gauss projection deformation.Combined with Guangzhou high-precision LiDAR and construction project with Guangzhou 2000 coordinate system,this paper introduces highprecision LiDAR data acquisition and DEM production process,designs two key technical methods of data processing of Gauss projection composite deformation,develops the automatic processing software and puts forward a new method of urban coordinate system accuracy evaluation.

关 键 词：机载激光雷达 高斯投影 中央子午线 数字高程模型 精度评估 

分 类 号：P23[天文地球—摄影测量与遥感]