Sen2Europe (2018)

The Federal Office of Cartography and Geodesy (BKG) has developed a procedure for the provision of remote sensing data based on requirements. Optical satellite image data is currently preferably used in the federal administration for further scientific production. The so-called mosaic process is an important method for this. The process was developed using EU-funded Sentinel-2 data from the European Earth Observation Initiative Copernicus and can be applied to any optical dataset (including aerial images). With this method, we provide a service through which optical remote sensing data can be processed professionally and on demand for every area on Earth. The Web Map Service (WMS) Sen2Europe enables users to integrate preprocessed and prepared remote sensing information from the Earth Observation Programme Copernicus (Sentinel-2, L1C-L2A), for Europe, in existing specialised procedures. The image data of the year 2018 were combined to form a mosaic, which has a floor resolution of 10 m. A composite of three bands (Sentinel-2 bands: 2, 3, 4 (R, G, B)) as well as information on the input image data are offered. The image data were subjected to a radiometric color compensation process in order to achieve a uniform appearance. For each mosaic, cloud cover over the entire area is less than 3 %. Separate layers are provided for the different annual statuses (e.g. Layers=rgb_2018 or Layers=rgb_2021).The request parameter TIME can display a specific year status (e.g. Time=2018) (without TIME parameter the latest state is displayed). You can use the following URL of the free web service directly, e.g. in your Geo-Information System (GIS):https://sgx.geodatenzentrum.de/wms_sen2europe联邦制图与大地测量局（Federal Office of Cartography and Geodesy, BKG）研发了一套基于需求的遥感数据供给流程。目前联邦行政机构优先采用光学卫星影像数据开展后续科研生产工作，其中镶嵌工艺是此类工作的重要技术手段。该流程依托欧盟资助的欧洲地球观测计划哥白尼（Copernicus）项目的Sentinel-2数据研发而成，可适配任意光学数据集（含航空影像）。 依托该技术，我们可提供一项服务，能够针对全球任意区域按需对光学遥感数据进行专业化处理。网页地图服务（Web Map Service, WMS）Sen2Europe支持用户将欧洲区域内来自哥白尼地球观测计划（Copernicus，Sentinel-2、L1C-L2A级）的预处理与整编遥感信息，集成至现有专业流程中。 2018年度的影像数据已拼接为镶嵌图，其基础分辨率为10米。服务提供了三个波段的合成影像（Sentinel-2波段2、3、4，对应红、绿、蓝通道）以及输入影像数据的相关元信息。为保证影像整体外观统一，所有影像数据均经过辐射色彩补偿处理。每幅镶嵌图的全域云量均低于3%。 针对不同年度的影像状态，服务提供了独立图层（例如Layers=rgb_2018 或 Layers=rgb_2021）。请求参数TIME可用于指定特定年度的影像状态（例如Time=2018）；若未携带TIME参数，则默认显示最新的影像状态。 用户可直接使用该免费网络服务的以下URL，例如在地理信息系统（Geo-Information System, GIS）中调用：https://sgx.geodatenzentrum.de/wms_sen2europe