基于动态后处理的无人机免像控测图方法  

A Method of UAV Mapping without Ground Control Points Based on PPK

作　　者：潘国富 单弘煜 赵鑫 PAN Guofu;SHANG Hongyu;ZHAO Xin(Guangzhou Hi-Target Navigation Tech Company Limited, Guangzhou Guangdong 511400, China)

机构地区：[1]广州市中海达测绘仪器有限公司,广东广州511400

出　　处：《北京测绘》2021年第8期1084-1088,共5页Beijing Surveying and Mapping

摘　　要：针对小面积的1∶500测图和三维建模项目需求,利用低成本的大疆P4R无人机作为航测平台,根据低成本卫星导航模块的数据质量特征,从数据预处理、解算模型、参数估计流程、模糊度固定方法、高精度基线解算五个方面进行动态后处理算法的优化设计,实现航拍影像的定位定姿系统(Position and Orientation System,POS)解算。实验结果表明:基于动态后处理定位算法能够满足无人机免像控1∶500大比例尺测图需求,软件已应用于国内外多个实际项目。Aiming at the urgent need of 1∶500 mapping and 3D modeling projects in a small area,DJI P4R UAV was applied as the aerial data acquisition platform.Considering the quality features of the data collected by the low-cost satellite navigation module,the PPK algorithm was optimized from five aspects:data pre-processing,modeling,parameter estimation,ambiguity fixing and baseline resolution to improve the success rate of aerial image POS solution.The experimental results showed that the PPK post-processing positioning technology could meet the needs of large-scale 1∶500 surveying without ground control points.

关 键 词：无人机航测 动态后处理 免像控 

分 类 号：P231[天文地球—摄影测量与遥感]