Closed-Loop Calibration of the Interaction Matrix for New Generation Adaptive Optics Systems: A Least Cost Identification Approach

Recently, with the switch to the new generation adaptive optics systems like the VLT and ELT an important identification problem emerged. These telescopes are so-called integrated systems, which means that open-loop calibration of the interaction matrix is not possible anymore. The first and foremost reason for this is that the new generation of...