Abstract
S. M. Rytov [A Theory of Electrical Fluctuations and Thermal Radiation (USSR Academy of Sciences, Moscow, 1953)] was apparently the first to establish theoretically a simple relation between deterministic Green's function and cross‐correlation of fluctuations of wave fields generated by random sources. He used reciprocity considerations to analyze fluctuations of electromagnetic fields. An acoustic counterpart of the Rytov's approach was applied in [O. A. Godin, Emergence of the acoustic Green's function from thermal noise, J. Acoust. Soc. Am. 121, EL96‐EL102 (2007)] to derive exact and asymptotic relations between acoustic Green's functions and cross‐correlation of thermal noise in inhomogeneous moving or motionless fluids. In this paper, these results are extended to solid and fluid‐solid media and compared to experimental and theoretical results previously reported in the literature. It is shown that, with the averaging time being sufficiently large, the two‐point correlation function of thermal noise ...
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.