固定翼无人机非量测相机免像控点空三精度分析  

Accuracy Analysis of Aerial Triangulation for Non-metric Camera of Fixed Wing UAV without Image Control Point

作　　者：尚海兴[1] SHANG Haixing(Northwest Engineering Corporation Limited,Xi’an 710000,China)

机构地区：[1]中国电建集团西北勘测设计研究院有限公司,陕西西安710000

出　　处：《测绘与空间地理信息》2020年第10期41-44,48,共5页Geomatics & Spatial Information Technology

基　　金：中国电建西北勘测设计研究院有限公司科技项目(XBY-2020-10)资助。

摘　　要：通过对无人机免像控点空中三角测量理论基础与误差因素分析,提出航摄相机严密三维检校、稳健的PPK定位模式、顾及地形的严密飞行方案和附加综合系统误差参数的GNSS辅助免像控点空三处理一整套解决方案。通过多个平差方案对比分析,证明该免像控点方案可实现固定翼无人机搭载非量测相机测制1∶2000地形图,同时提出了高精度稀少像控测图的最佳方案。免像控点测图方法省去了外业地面像控点测量工序,大幅减少了外业像控点测量的时间和成本开支,危险困难地区可有效规避安全风险并实现高精度测图,同时在大规模智慧城市倾斜摄影三维建模工程应用中具有广阔的应用前景。Based on the analysis of the theoretical basis and error factors of UAV aerial triangulation without image control points,a complete set of solutions for three-dimensional calibration of aerial camera,robust positioning mode of PPK,terrain-based flight simulation scheme and GNSS-aided image-free control point-to-air processing with additional parameters and system errors are proposed.Through the comparison and analysis of several adjustment schemes,it is proved that the image free control point scheme can realize the measurement of 1∶2000 topographic map of fixed wing UAV with non-metric camera,and the best scheme of high-precision mapping rare image control is proposed.This method eliminates the process of field ground image control point measurement,greatly reduces the time and cost of field image control point measurement.It can effectively avoid safety risks and achieve high-precision mapping in dangerous and difficult areas.At the same time,it has broad application prospects in large-scale intelligent city tilt photography 3 D modeling engineering applications.

关 键 词：固定翼无人机 1 免像控点 PPK 非量测相机 空中三角测量 

分 类 号：P231[天文地球—摄影测量与遥感]