Combining different SAR images using the concept of interleaving is very well possible. Leading to:
• Improved PoD as the patrolling frequency is improved.
• More resilient service
• Potential for cost-reduction (not relying only on commercial satellites but also satellites providing open source data products).
Our current interleaving architecture is capable of handling: TerraSAR-X, Radarsat-2, and Sentinel-1 (using the TOPS mode of acquisition).
Also, we have investigated how a better classification system of TPI-warnings can be devised. This classification system is needed to better classify the TPI-warnings for the end-user so that the required actions can better be devised.
Besides a better graphical presentation of the TPI-warnings so that end-users have an intuitive idea about the change, we also have implemented a number of automatic image processing algorithms to:
• Classify land-use to ease the distinction between agricultural and urban changes.
• Classify changes as “normal” to ease the distinction between normal and abnormal operations in a parking place or storage area.
All these technical developments will lead to a better and more reliable surveillance system that will greatly benefit from the free open source data that will be provided by the European Copernicus Infrastructure in general, and the Sentinel-1 Infrastructure in particular.