Optical EngineeringOptimal design of wavefront sensors for adaptive optical systems: part 2, optimization of sensor subaperture locations
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The problem of determining sensor subaperture locations for a shearing interferometer wavefront sensor that maximize controllability and observability is examined and shown to be an intractable optimization problem. A practical algorithm, the sequential backward selection algorithm, is used to determine a suboptimal sensor configuration. Monte Carlo studies show that the algorithm determines a nearly optimal and entirely acceptable configuration in a reasonable time.