Fourier Analysis of Ghost Imaging
  Fourier analysis of ghost imaging (FAGI) is proposed in this paper to analyze the properties of ghost imaging with thermal light sources. This new theory is compatible with the general correlation theory of intensity fluctuation and could explain some amazed phenomena. Furthermore we design a series of experiments to verify the new theory and investigate the inherent properties of ghost imaging. 
Honglin Liu, Jing Cheng, Yanfeng Bai and Shensheng Han