- Anomaly detection aims to discover abnormal patterns hidden in multidimensional radar signals and images. This research field is essential in data mining for quickly isolating irregular or suspicious segments in large amounts of the database. Some examples are: Oil Slick, Turbulent ship wake, Levee anomaly, Archeology. Having data from Sentinel 1 satellite, NASA Jet Propulsion Laboratory airborne radar, ALOS-2 satellite, TerraSAR-X satellite, etc., but often come unlabeled, anomaly detection processus relies on unsupervised and semi-supervised learning algorithms. With the rise of self-supervised learning techniques and deep neural networks, pretext features can be vectorized requiring little to no labeled data. The thesis primarily investigates towards guiding the self-supervised learning process to extract representations suitable for anomaly detection. These characteristics cover SAR diversities aspect:
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