Description: While it is easy to compute how sound scatters off a given object, the inverse problem of computing the shape of an object from the scattered sound is much more difficult. Only recently have the signals provided by ocean acoustic sensors become good enough to make such "tomography" possible in the ocean. The chapters in this book, each by a noted expert in the field, represent the state of the art; they have all been edited to provide a uniform format and level of presentation.
