Patent ID: 8797828

Claim:
System for optical seismic surveying of an area of interest, comprising: at least one seismic source, for generating at least one seismic wave in said area of interest; at least one laser source, for generating a matrix of laser spots on a surface of said area of interest; at least one optical sensing system, for detecting reflections of said laser spots, reflected directly from said surface as a speckle pattern; and a processor, coupled with said at least one seismic source, said at least one laser source and said at least one optical sensing system, wherein said at least one seismic source modifies said speckle pattern; wherein said processor determines at least one property of said at least one seismic wave according to the spatial dynamics of said speckle pattern and said modified speckle pattern thereby generating a seismic map of said area of interest; and wherein said at least one property comprises the displacement of speckles between said speckle pattern and said modified speckle pattern.