Satellite sensors are used as the main data source for ice
monitoring in the Arctic region. Due to the frequent cloud
coverage and long periods with little sunlight, optical remote
sensing technology cannot generate continuous observations in
the Arctic. Instead, passive microwave and synthetic aperture
radar (SAR) sensors are commonly used [3], both of which
can generate observations regardless of the weather conditions
(cloud, rain) and sunlight. Passive microwave sensors detect
radiation emitted by the target. A large footprint is normally
required to have sufficient energy for a measurement. This
constrains the spatial resolution of the passive microwave data,
which is normally above 4 km. In contrast, SAR transmits
radiation to the Earth and measures the portion of energy