国家新型基础测绘体系建设试点区域1 m间隔点云数据获取处理与质量分析

Acquisition,processing and quality analysis of 1-meter spacing point cloud data in the pilot area of national new basic surveying and mapping system construction

地形级地理场景生产是国家新型基础测绘体系建设在山东试点的重要任务之一,作为地形级地理场景的主要组成部分,DEM一般基于机载LiDAR点云数据制作。笔者所在单位选择高密市作为试点区域,采用徕卡CityMapper混合航摄仪获取了试验区优于1 m间隔的点云数据,并对飞行质量和点云质量进行检验,对点云高程和平面位置精度进行检核。试验验证了徕卡CityMapper混合航摄仪数据获取的精准和高效性,为即将全面实施的山东省陆域1 m间隔点云数据获取处理项目提供了技术方案,且为DEM制作和地形级地理场景的生产提供了保障。

The production of terrain-level geographic scene is one of the important tasks of Shandong pilot project of national new basic surveying and mapping system construction.As the main component of topographic-level geographic scene,DEM is generally produced by airborne LiDAR point cloud data.The surveying mapping institute of the author in is as a pilot area,and uses Leica CityMapper to obtain the point cloud data with aspacing of less than 1 meter,tests the flight quality and point cloud quality,and checks the point cloud vertical and horizontal accuracy.The Gaomi LiDAR project verifies the accuracy and efficiency of Leica the City Mapper,and it provides a technical solution for 1-meter spacing point cloud data acquisition and processing for Shandong land aera,and provides a guarantee for DEM and terrain-level geographic scene production.