mDRONES4rivers-project: UAV-imagery of the project area Kuehkopf Knoblochsaue at the Rhine River, Germany

Spatially and temporally high-resolution data was acquired with the aid of multispectral sensors mounted on UAV and a gyrocopter platform for the purpose of classification. The work was part of the research and development project „Modern sensors and airborne remote sensing for the mapping of vegetation and hydromorphology along Federal waterways in Germany“ (mDRONES4rivers) in cooperation of the German Federal Institute of Hydrology (BfG), Geocoptix GmbH, Hochschule Koblenz und JB Hyperspectral Devices. 
Within the project period (2019-2022) data was collected at different sites situated in Germany along the Rivers Rhine and Oder. All published data produced within the project can be found by searching for the keyword ‘mDRONES4rivers‘. 
In this dataset, the following UAS data and metadata of the project site ‘Kuehkopf Knoblochsaue’ (center coordinates [WGS84]: 49.830564°N, 8.383341°E; area: 48 ha) at the Rhine River in Germany is available for download:
•             Multispectral orthophotos (GeoTiff; 6 bands: B, G, R, Red-Edge, NIR, Flag; camera: Micasense; resolution: 25 cm; abbreviation: MS_RAW)
•             RGB-orthophotos (GeoTiff; 3 bands: R, G, B; camera: Phantom; resolution: 25 cm; abbreviation: PH_ORTHO)
•             Digital Surface Models (GeoTiff; 1 band; camera: Phantom; resolution: ca. 5 cm; abbreviation : PH_DEM)
•             associated Technical Reports (PDF; technical metadata concerning data acquisition, and processing using Agisoft Metashape, 1x for multispectral orthophotos, 1x for RGB-orthophotos + digital surface model)
The above-mentioned files are provided for download as dataset stored in one directory per season depending on the date of data acquisition (e.g. mDRONES4rivers_NW_2019_01_Winter.zip = projectname_projectsite_year_no.season_name.season). To provide an overview of all files and general background information plus data preview the following files are stored in the info.zip folder: 
•             Overview table and metadata of the above-mentioned data (xlsx)
•             Summary (PDF, Detailed description of sensors and data acquisition procedure, 1x for multispectral orthophotos, 1x for RGB-orthophotos + digital surface models)
Note: the data was processed with focus on spectral information and not for geodetic purposes. Georeferencing accuracy has not been checked in detail.

本数据集依托搭载于无人机（Unmanned Aerial Vehicle, UAV）和自转旋翼机平台的多光谱传感器获取，具备时空高分辨率特性，旨在用于分类任务。本工作隶属于德国联邦水文研究所（BfG）、Geocoptix GmbH、科布伦茨应用科技大学（Hochschule Koblenz）以及JB Hyperspectral Devices联合开展的研发项目“德国联邦航道沿线植被与水形态测绘用新型传感器及机载遥感技术”（mDRONES4rivers）。
项目实施周期为2019-2022年，数据采集覆盖德国境内莱茵河与奥得河沿线的多个点位。项目产出的全部公开数据可通过搜索关键词“mDRONES4rivers”获取。
本次公开的数据集为德国莱茵河沿岸项目站点“Kuehkopf Knoblochsaue”（中心坐标[WGS84]：49.830564°N，8.383341°E；面积：48公顷）的无人机系统（Unmanned Aircraft System, UAS）数据及元数据，可供下载，具体包含以下内容：
• 多光谱正射影像（GeoTiff格式；包含6个波段：蓝、绿、红、红边、近红外、标记波段；搭载相机：Micasense；分辨率：25厘米；缩写：MS_RAW）
• RGB正射影像（GeoTiff格式；包含3个波段：红、绿、蓝；搭载相机：Phantom；分辨率：25厘米；缩写：PH_ORTHO）
• 数字表面模型（GeoTiff格式；单波段；搭载相机：Phantom；分辨率约5厘米；缩写：PH_DEM）
• 相关技术报告（PDF格式；包含数据采集及使用Agisoft Metashape进行处理的技术元数据，多光谱正射影像对应1份，RGB正射影像+数字表面模型对应1份）
上述文件将按照数据采集的季节分别打包至对应目录供下载，命名格式示例：mDRONES4rivers_NW_2019_01_Winter.zip = 项目名_项目站点_年份_季次.季节名。为方便用户了解全部文件概况、通用背景信息及数据预览，info.zip压缩包中包含以下内容：
• 上述数据的总览表格及元数据（xlsx格式）
• 总结文档（PDF格式；详细说明传感器及数据采集流程，多光谱正射影像对应1份，RGB正射影像+数字表面模型对应1份）
注：本数据集处理重点为光谱信息，未针对大地测量用途优化。地理配准精度未经过详细核验。