Based on the most widely used proportional-integrator controller of the tip-tilt correction loop in an adaptive optical system, the relationship between the optimal closed-loop bandwidth and the atmosphere turbulence as well as the sensor noise is analyzed. Numerical simulation is also performed by using the time serial signals that follow the power spectrum density of the global tilt of Kolmogorov turbulence. Results show that with different atmosphere turbulences and sensor noises, the correction capability of the tip-tilt correction loop can be brought into full play by choosing appropriate closed-loop bandwidth and the residual variance can be reduced.
1.Chinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Peoples R China 2.Chinese Acad Sci, Key Lab Adapt Opt, Chengdu 610209, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation:
Guo You-Ming,Ma Xiao-Yu,Rao Chang-Hui. Optimal closed-loop bandwidth of tip-tilt correction loop in adaptive optics system[J]. ACTA PHYSICA SINICA,2014,63(6).
