Duacs processes Level-3 (L3; along-track) and Level-4 (L4; maps) altimeter products and derived added value products, both in delayed time (DT) and near real time (NRT); for global and regional areas. The DUACS system has undergone continuous evolution, advancing across various themes to address the growing needs of scientific research and operational applications​

Figure: Evolution of the différent DUACS product versions

The changes are listed on the following pages: