Earth Observation Time Series Analysis Toolbox
Development of an Earth Observation Time Series Analysis Toolbox for PROBA-V data
The core focus of this project is the implementation of a time series analysis toolbox for remote sensing imagery in R. The toolbox is developed by the Luxembourg Institue of Science and Technology (LIST) for ESA according to the needs of the NDVI time series analysis community. 52°North contributed to the toolbox development (outside project funding). The data is derived from the PROBA-V satellite provided by the corresponding mission exploitation platform (MEP) at VITO (Flemish Institute for Technological Research NV, Belgium). The toolbox largely builds on existing specialized R packages and functions for raster and time series analysis combining these in a common framework. In order to ease access and usage of the toolbox, it must be deployed in the MEP Spark Cluster and wrapped in a Web Processing Service (WPS) using 52°North’s WPS4R extension. The WPS is also re-used in the Automatic Service Builder developed by Space Applications Services NV/SA, Belgium. Hence, the analytics developed in R can be integrated into a larger workflow potentially integrating external data. The WPS provides a Webclient including a preview of the results in a map window for usage within the MEP.
Beginning in 2019, 52°North and LIST reviewed and integrated the R-scripts constituting the Earth Observation Time series Analysis Toolbox into an R package. After checking the toolbox on a local system, we put forward the integration into the larger set-up. The toolbox was stepwise deployed on the Virtual Machine running in the MEP at VITO and the associated Spark Cluster. In the next phase, 52°North wrapped the toolbox into WPS processes using WPS4R. The WPS has been deployed with its angular based Web-Client to give non-expert users access to the time series analytics. Additionally, the Automatic Service Builder (developed by Space Applications Services NV/SA, Belgium) can access and use the WPS.
- OGC Web Processing Service (WPS)
- OGC Web Mapping Service (WMS)
- OGC Web Coverage Service (WCS)