Fast acquisition of accurate ground points cloud based on CityMapper-2L
CityMapper-2L,an airborne hybrid surveying equipment,shows a highly integration and utilizization of the technology of laser surveying and oblique photogrammetry,it will provide important equipment support for accurate geographic information data acquisition.This paper introduces the City-Mapper-2L surveying equipment,and analyzes and verifies the accuracy and efficiency of the equipment in acquiring large-scale surface points clouds by taking the acquisition of airborne LiDAR points cloud data in the Jiaodong Peninsula as an example,and from key technologies such as flight design,placement parameter determination,precise trajectory calculation,and aerial points cloud production.