Abstract

Although crossed beam $C_n^2$ measurement techniques have been used in the past it has generally been known that they are quite sensitive to measurement noise.¹,² Recently a matrix formulation of this concept has been implemented to develop a least-squares estimator for the unknown $C_n^2$-profile. This newly developed estimator is applicable to scintillation measurements, wavefront gradient measurements or a combination of the two and provides the best estimate in the presence of noise.

© 1992 Optical Society of America