Abstract：
:It is shown that a diffuse field is not devoid of phase information, but has a correlation function equal to the Green's function. More specifically, the cross-correlation between diffuse signals in two transducers is very nearly equal to the direct response of one transducer to an impulse applied to the other. This is true whether the diffuse field is one that was created by a distant source, or (if the detectors are sufficiently sensitive) created by thermal fluctuations in the specimen. Here we outline and review proofs, and laboratory demonstrations, from three recent archival publications.
journal_name
Ultrasonicsjournal_title
Ultrasonicsauthors
Weaver R,Lobkis Odoi
10.1016/s0041-624x(02)00156-7subject
Has Abstractpub_date
2002-05-01 00:00:00pages
435-9issue
1-8eissn
0041-624Xissn
1874-9968pii
S0041-624X(02)00156-7journal_volume
40pub_type
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