Some spectral properties of random arrays of grains*

We comment on the jitter model proposed by Stark [ J. Opt. Soc. Am.5, 700 ( 1977)] to explain the spectral properties of a nonoverlapping grain structure (NOGS), and we discuss the points of concordance and disparity between Stark’s work and our own. A more general formulation for the two-dimensional jitter model is established on a theoretical basis. This different approach permits deeper insight into the interpretation of jitter model spectral properties, as confirmed by our experimental results. A one-dimensional model generated by a Poisson process is used to establish the NOGS.