Digital Orthophotos and water-land-boundaries at the Elbe eastuary (Germany), July 2022, Sat-Land-Fluss-project

In July 2022 we mapped the tidal area of the Elbe near Cuxhaven and Brunsbüttel. The data was gathered by UAV (Unmanned Aerial Vehicle) with a RBG camera and a PDGNSS-Rover (Precice Differential Global Navigation Satellite System) in three areas: 1) Otterndorf at low tidal level (beach area), 2) Neufelderkoog at low tidal level (wadden area), 3) Neufeld at high tidal level (flooded reed area). For each area we provide a digital orthophoto and the correlation of the measurement timing to the local sea level. The measurements were obtained at the same time as the radar satellite Sentinel 1 crossed the area. The data is structured in three zip-archives corresponding to the study areas:1) 20220712_Tnw_Otterndorf.zip: provides the time series data as comma-separated text files (CSV) provides (a) a digital orthophoto at 1,5 cm resolution, (b) an overview jpg showing of the measurement times and the local sea level, (c) timing of the UAV-flightlines and (d) two PDGNSS measurement series collected simultaneously as csv. (downloadable as 10.4 GB zip archive), 2) 20220712_Tnw_NeufelderkoogPriel.zip: provides (a) a digital orthophoto at 2 cm resolution and (b) an overview jpg showing of the measurement times and the local sea level (downloadable as 6,3 GB zip archive), 3) 20220720_Thw_Neufeld.zip: provides (a) a digital orthophoto at 2 cm resolution and (b) an overview jpg showing of the measurement times and the local sea level (downloadable as 8,4 GB zip archive). The data is used in the frame of the project "satellite based water-land-boundary detection" (Sat-Land-Fluss), as validation for Sentinel-1 derived water-land determinations. Sat-Land-Fluss was a R&D project lasting from 2020-2024, funded by the German Federal Ministry for Digital and Transport in the 4th project call "National Copernicus Application" (50EW2015).2022年7月，我们对库克斯港（Cuxhaven）与布伦斯比特尔（Brunsbüttel）附近的易北河（Elbe）潮汐区域开展了测绘工作。本次数据由搭载RBG相机的无人机（Unmanned Aerial Vehicle, UAV）与PDGNSS流动站（Precice Differential Global Navigation Satellite System）采集完成，共覆盖三个研究区域：1) 奥特恩多夫（Otterndorf）低潮位滩涂区域；2) 纽费尔德科格（Neufelderkoog）低潮位潮间带区域；3) 纽费尔德（Neufeld）高潮位淹没芦苇区域。 针对每个研究区域，我们均提供了数字正射影像，以及测量时刻与当地海平面的对应关系数据。本次测量与雷达卫星哨兵1号（Sentinel-1）过境该区域的时刻完全同步。 本数据集按照三个研究区域划分为三个zip压缩包：1) 20220712_Tnw_Otterndorf.zip：包含以逗号分隔值（Comma-Separated Values, CSV）格式存储的时序数据，具体包括(a) 分辨率为1.5厘米的数字正射影像，(b) 展示测量时刻与当地海平面对应关系的概览JPEG图片，(c) 无人机飞行航线时刻信息，以及(d) 两组同步采集的PDGNSS测量序列（均以CSV格式存储），该压缩包下载大小为10.4 GB；2) 20220712_Tnw_NeufelderkoogPriel.zip：包含(a) 分辨率为2厘米的数字正射影像，以及(b) 展示测量时刻与当地海平面对应关系的概览JPEG图片，该压缩包下载大小为6.3 GB；3) 20220720_Thw_Neufeld.zip：包含(a) 分辨率为2厘米的数字正射影像，以及(b) 展示测量时刻与当地海平面对应关系的概览JPEG图片，该压缩包下载大小为8.4 GB。 本数据集服务于"星基水陆边界检测"（Sat-Land-Fluss）项目，用于验证由哨兵1号数据反演得到的水陆判定结果。Sat-Land-Fluss是一项实施周期为2020年至2024年的研发项目，由德国联邦数字与交通部在第四轮"国家哥白尼应用"（National Copernicus Application）项目征集（资助编号：50EW2015）中立项资助。