无人机大比例尺免像控关键技术探讨

王永菊; 龚克; 东正兰

doi:10.13442/j.gnss.1008-9268.2020.04.014

无人机大比例尺免像控关键技术探讨

doi: 10.13442/j.gnss.1008-9268.2020.04.014

1.
青海省基础测绘院,青海西宁 810001
2.
青海省测绘质量监督检验中心,青海西宁 810001

详细信息

作者简介:
王永菊 (1981-),女,工程师,主要从事遥感、摄影测量、地理信息、地图制图、测绘工程等工作.

通讯作者:
王永菊 E-mail: wangyj_81@163.com

计量
- 文章访问数: 227
- HTML全文浏览量: 50
- PDF下载量: 36
- 被引次数: 0
出版历程
- 刊出日期: 2020-08-15

Discussion on key technology of large scale image free control for UAV

1.
Qinghai Provincial Basic Surveying and Mapping Institute, Xining 810001, China
2.
Qinghai Surveying and Mapping Quality Supervision and Inspection Center, Xining 810001, China

摘要

摘要: 针对无人机摄影飞行速度不稳定导致影像获取时刻曝光误差不统一问题,提出无人机大比例尺免像控方法．首先,探讨分析影像镜头畸变误差模型以及曝光延迟带来无人机曝光未同步问题;然后,对传统的GPS辅助光束法平差模型中引入曝光延迟模型,提出引入曝光延迟的GPS辅助光束法平差方法;最后,以工程实例验证该方法的有效性,实验结果表明本文方法可以在无像控点参与情况下满足1∶500的大比例测图精度要求.
- 大比例尺 /
- 镜头畸变纠正 /
- 曝光延迟 /
- 低空摄影 /
- GPS辅助光束法平差
Abstract: Aiming at the problem that the time exposure error of image acquisition is not uniform due to the unstable flight speed of UAV photography, a large-scale image free control method for UAV is proposed. First of all, this paper discusses the analysis of the camera lens distortion error model and the problem that the exposure of UAV is not synchronized due to the exposure delay. Then, the exposure delay model is introduced into the traditional GPS auxiliary beam method adjustment model, and a GPS auxiliary beam method adjustment method with the exposure delay is proposed. Finally, the effectiveness of this method is verified by an engineering example. The experimental results show that this method can be used in the UAV when the control point is involved, thus it can meet the accuracy requirement of 1∶500 large scale mapping.
- large scale /
- lens distortion correction /
- exposure delay /
- low altitude photography /
- GPS assisted beam adjustment

HTML全文

参考文献(12)

[1]	贺少帅,周乃恩,朱振宇.稀无控制点无人机遥感影像几何定位方法研究［J］.地理信息世界,2019,26(2):96-99.
[2]	龚小强,邹进贵,孟丽媛.一种无像控点近景摄影测量方法［J］.测绘通报,2019(增刊2):94-97.
[3]	陈登,林卉,苏天路,等.多视几何理论辅助的无人机低空摄影测量空三加密［J］.测绘通报,2017(6):26-30.
[4]	姜丙波,查海林,苏军明, 等.高精度POS在无人机航摄大比例尺测图中的应用［J］.测绘通报,2017(增刊1):30-32,45.
[5]	贾彦昌,张斌.免像控无人机航摄系统在1∶500地形图测绘中的应用［J］.北京测绘,2018,32(9):1092-1096.
[6]	朱晓康,魏景帅.1∶500免像控无人机航测技术应用研究［J］.地理空间信息,2019,17(2):22-26.
[7]	林宗坚,崔红霞,孙杰, 等.数码相机的畸变差检测研究［J］.武汉大学学报(信息科学版),2005,30(2):122-125.
[8]	袁修孝,蔡杨,史俊波,等.北斗辅助无人机航摄影像的空中三角测量［J］.武汉大学学报(信息科学版),2017,42(11):1573-1579.
[9]	袁修孝,高宇,邹小容.GPS辅助空中三角测量在低空航测大比例尺地形测图中的应用［J］.武汉大学学报(信息科学版),2012,37(11):1289-1293.
[10]	张春森,朱师欢,臧玉府,等.顾及曝光延迟的无人机GPS辅助光束法平差方法［J］.测绘学报,2017,46(5):565-572.
[11]	陈兴芳,张福存,郭德福,等.基于曝光补偿的GPS辅助平差在大比例尺免像控技术中的算法研究［J］.青海师范大学学报(自然科学版),2018,34(4):10-14,21.
[12]	肖雄武,郭丙轩,李德仁,等.一种具有仿射不变性的倾斜影像快速匹配方法［J］.测绘学报,2015,44(4):414-421.