测绘通报 ›› 2020, Vol. 0 ›› Issue (10): 101-105.doi: 10.13474/j.cnki.11-2246.2020.0328

• 技术交流 • 上一篇    下一篇

基于LiDAR的城市坐标系精度评估及应用

胡耀锋, 胡欣然   

  1. 广州市城市规划勘测设计研究院, 广东 广州 510060
  • 收稿日期:2020-04-09 出版日期:2020-10-25 发布日期:2020-10-29
  • 作者简介:胡耀锋(1979-),男,硕士,教授级高级工程师,主要从事地理信息系统开发、地图制图、工程测量、机载LiDAR航测等工作。E-mail:flyfox@126.com
  • 基金资助:
    智慧广州时空信息云平台建设项目(GZIT2016-A5-147)

Accuracy evaluation and application of urban coordinate system based on LiDAR

HU Yaofeng, HU Xinran   

  1. Institute of Guangzhou Urban Planning and Design Survey Research, Guangzhou 510060, China
  • Received:2020-04-09 Online:2020-10-25 Published:2020-10-29

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。

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

Abstract: 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 high-precision 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.

Key words: LiDAR, Gauss projection, centralmeridian, DEM, accuracy evaluation

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