Title :
Passive imaging using cross correlations of ambient noise signals
Author :
Garnier, Josselin ; Papanicolaou, George
Author_Institution :
Lab. de Probabilites et Modeles Aleatoires, Univ. Paris 7, Paris, France
Abstract :
It is possible to estimate the travel time or even the full Green´s function between two passive sensors from the cross correlation of recorded signal amplitudes generated by ambient noise sources. Using the stationary phase method we show that it is possible to image reflectors buried in a smoothly varying medium by migrating the cross correlations of the noise signals.
Keywords :
Green´s function methods; array signal processing; correlation methods; imaging; Green´s function; ambient noise signals; cross correlations; image reflectors; passive imaging; passive sensors; signal amplitudes; stationary phase method; Amplitude estimation; Conferences; Green´s function methods; Image sensors; Mathematics; Noise generators; Noise level; Partial differential equations; Sensor arrays; Signal processing;
Conference_Titel :
Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP), 2009 3rd IEEE International Workshop on
Conference_Location :
Aruba, Dutch Antilles
Print_ISBN :
978-1-4244-5179-1
Electronic_ISBN :
978-1-4244-5180-7
DOI :
10.1109/CAMSAP.2009.5413294
