Acoustic imaging device

An acoustic imaging device for providing an image of at least a portion of a medium comprising:

• a. an acoustic broadcasting means for broadcasting into said medium an acoustic signal from a plurality of at least seven locations partially surrounding said medium, one location at a time said signal being at least one frequency and continuous for a period of time at least equal to twice the travel time of said acoustic signal across said medium,
• b. an acoustic signal detection means for detecting, at a plurality of closely spaced locations at least partially surrounding said medium, acoustic signals broadcast by said broadcasting means;
• c. a data collection and comparison means for comparing signals broadcast to signals received in order to provide with respect to each of said at least seven locations a set of data representing the phases and amplitudes of acoustic signals received at said at least seven locations relative to the phase and amplitude of the signals broadcast from at least seven locations, and
• d. a computing means including means for effecting a remap algorithm for mathematically constructing an image of at least a portion of said medium utilizing said set of phase and amplitude data.