Earth observation data for the Space and security domain are currently showing an unprecedented scenario in terms of variety, volume, velocity, veracity and value. Thus the key challenge is to improve the capacity to access and analyse this huge amount of heterogeneous data to timely provide decision-makers with clear and useful information. One of the key products derived from these data sets is related to the identification of changes on the Earth surface. Change detection is an important technique to support the monitoring of urban, built-up and natural environments in order to identify certain features and anomalies over areas of interest as well as the assessment of natural resources.
Within this context, the goals of the Space and Security pilot in NextGEOSS are: