Multi-layer predictive control for tomographic wavefront estimation

S. Mark Ammons, Luke Johnson, Renate Kupke, Donald Gavel, Claire E. Max & Lisa A. Poyneer
We discuss the extension of predictive control techniques utilizing Taylor frozen-flow motion to multi-guide star, multi-layer tomographic wavefront measurement systems. The expectation is that the combination of height information from multiple guide stars and wind velocity estimates breaks degeneracies in volumetric phase reconstruction, particularly for voxels sampled by only one GS, allowing for a reduction of the tomographic error and an expansion of the field of view. Using a simple shifting-and-averaging scheme to track individual...