%0 Journal Article
%T 长江河道无人机正射建模分析<br>UAV Orthorection Modeling Analysis of Yangtze River Channel
%A 魏威
%A 许俊辉
%J Geomatics Science and Technology
%P 77-84
%@ 2329-7239
%D 2024
%I Hans Publishing
%R 10.12677/GST.2024.121010
%X 近年来，消费级无人机由于价格低廉、作业灵活方便，逐渐成为小区域航空摄影测量的主要作业方式。随着测量技术的快速、多元化发展，无人机航测以轻便灵活、机动高效、作业成本低、生产周期短等特点成为测量行业的主流方法之一。正射影像图作为摄影测量常见的工作内容之一，在国家和地方高精度空间基础数据数字化中有着广泛应用。如何以消费级无人机为基础，生产出高质量的正射影像图，对提升城市空间数字化发展水平至关重要。本文通过无人机正射技术构建了长江河道正射影像模型，以南京长江北岸为研究区域，基于无人机正射技术，选取大疆精灵4RTK进行飞行作业。选取Dji Terra处理遥感影像进行建模。进行建模后达到了预期的效果。传统的测绘级无人机一般以固定翼为主，造价昂贵，单次飞行成本较高，而对于小区域正射影像图制作来说，其飞行时间短、成本高。相较于测绘级无人机，消费级无人机虽然硬件基础存在一定不足，但是灵活度高，适用范围广。如何以消费级无人机为基础，优化外业作业方式，并尽量提高正射影像图精度是近年来相关研究的重点和难点。<br />
In recent years, consumer-grade UAVs have gradually become the main operation mode of aerial photogrammetry in small areas due to their low price and flexible operation. With the rapid and diversified development of surveying technology, UAV aerial survey has become one of the main-stream methods in the surveying industry with the characteristics of lightness, flexibility, maneu-verability and efficiency, low operating cost and short production cycle, and orthophoto image, as one of the common work contents of photogrammetry, has been widely used in the digitization of national and local high-precision spatial basic data. How to produce high-quality orthophotos based on consumer-grade drones is crucial to improving the digital development of urban space. In this paper, an orthophoto image model of the Yangtze River channel is constructed by UAV orthorection technology, and the north bank of the Yangtze River in Nanjing is the research area, and the PHANTOM 4RTK is selected for flight operations based on UAV orthorection technology. Dji Terra is selected to process remote-sensing images for modeling. The modeling achieved the desired effect. Traditional surveying and mapping UAVs are generally based on fixed wings, which are expensive and have high single flight costs, while for the production of small area orthophotos, their flight time is short and costly. Compared with surveying and mapping UAVs, although the hardware foundation of consumer UAVs has certain deficiencies, it has high flexibility and a wide range of applications. How to optimize the field operation mode based on consumer UAVs and try to improve the accuracy of orthophoto maps is the focus and difficulty of relevant research in recent years.
%K 无人机，河道监测，航测<br>UAV
%K River Monitoring
%K Aerial Survey
%U http://www.hanspub.org/journal/PaperInformation.aspx?PaperID=80181