We consider the point-spread function (PSF) of an imaging system looking through weak optical turbulence along a horizontal path through the atmospheric surface layer. From this PSF we derive a scalar total irradiance field and a center-of-mass vector field. Theoretical values are found for the space–time autocorrelation and cross-correlation functions for these fields, which are then compared with the observed correlation functions obtained from data taken at the Validation Measurements on Propagation in the Infrared and Radar (VAMPIRA) measurement trial. We discuss the meaning of these results and possible directions for future work.
© 2007 Optical Society of America
Atmospheric and Oceanic Optics
Original Manuscript: May 5, 2006
Revised Manuscript: July 26, 2006
Manuscript Accepted: September 11, 2006
Published: February 14, 2007
Guy Potvin, J. Luc Forand, and Denis Dion, "Some space-time statistics of the turbulent point-spread function," J. Opt. Soc. Am. A 24, 753-763 (2007)