无人机巡航测量河流表面流场的方法与应用
dc.contributor.author
Cao, Liekai
dc.contributor.author
Detert, Martin
dc.contributor.author
Li, Danxun
dc.date.accessioned
2021-01-18T11:10:26Z
dc.date.available
2021-01-17T03:39:39Z
dc.date.available
2021-01-18T11:10:26Z
dc.date.issued
2020-12
dc.identifier.other
10.16058/j.issn.1005-0930.2020.06.001
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/463077
dc.description.abstract
:建立了基于运动结构恢复方法和特征点匹配测速技术的无人机巡航测速系统,实现了对河流大范围表面流场的长距离巡航监测.首先建立地面控制点,并向水中投入示踪物体;利用无人机巡航俯视拍摄河流表面,连续采集照片;采用运动恢复结构方法估算各时刻相机的姿态参数,建立目标区域正射投影网格,转换得到正射影图像;再利用加速鲁棒特征算法识别和匹配连续粒子图像中的特征点,得到特征点坐标和位移;进行尺度转化,最终得到流场.该方法成功应用于瑞士苏黎世利马特河表面流场测量,结果表明该方法得到的正射投影图像质量高,流场计算结果合理,与PIV方法相比误差为3.4%,计算速度提升8倍;计算结果与水文站断面实测值吻合良好.
en_US
dc.language.iso
zh
en_US
dc.publisher
CNKI
en_US
dc.subject
运动恢复结构
en_US
dc.subject
无人机
en_US
dc.subject
水面流场
en_US
dc.subject
特征点
en_US
dc.subject
大尺度图像测速
en_US
dc.subject
正摄影图像
en_US
dc.title
无人机巡航测量河流表面流场的方法与应用
en_US
dc.title.alternative
Airborne Image Velocimetry System and Its Application on River Surface Flow Field Measurement
en_US
dc.type
Journal Article
ethz.journal.title
Yingyong Jichu yu Gongcheng Kexue Xuebao/Journal of Basic Science and Engineering
ethz.journal.volume
28
en_US
ethz.journal.issue
6
en_US
ethz.pages.start
1271
en_US
ethz.pages.end
1280
en_US
ethz.identifier.scopus
ethz.publication.place
Beijing
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2021-01-17T03:39:43Z
ethz.source
SCOPUS
ethz.eth
yes
en_US
ethz.availability
Metadata only
en_US
ethz.rosetta.installDate
2021-01-18T11:10:34Z
ethz.rosetta.lastUpdated
2021-01-18T11:10:34Z
ethz.rosetta.versionExported
true
ethz.COinS
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