Acoustic imaging in turbulent media with the spatial bispectrum

We introduce a new array processing system that performs high resolution imaging in turbulent ocean media. It exploits information contained in higher order spatial spectra and images to a resolution which is limited by the array aperture rather than the medium. Precise a priori knowledge of the turbulence´s spatial coherence structure is not needed. Furthermore, the signal processing is straightforward to implement, the system is self-calibrating, and the computational demands are reasonable. We have conducted initial tests of the imager and present representative results