Abstract: Embodiments relate to a system, to methods, and to a processing module for detecting one or more objects in the seabed, wherein the detection of the one or more objects is based on the scattering of the at least one acoustic signal at the one or more objects. The system comprises an attachment structure (10). The attachment structure is intended to mechanically couple a signal source (20) and a plurality of receivers (30) to a vessel or to a propulsion unit. The system comprises the signal source (20) configured to emit at least one acoustic signal towards the seabed. A wavelength of the acoustic signal is adapted to an expected size of the one or more objects. The system comprises the plurality of receivers (30). A distance between adjacent receivers is at most half the wavelength of the acoustic signal. The plurality of receivers is configured to generate a receiver signal based on a scattering of the at least one acoustic signal at the one or more objects.

Abstract: Embodiments deal with a method, a computer program as well as an apparatus for detecting one or more objects in the sea floor. The method comprises obtaining a receiver signal. The receiver signal is based on a scattering of multiple acoustic signals at the one or more objects in the sea floor. The receiver signal is generated by a plurality of receivers. The method further comprises grouping portions of the receiver signal to points of a detection grid. The detection grid represents a grid at the points of which the one or more objects are being localized. The method further comprises performing a travel time correction of the portions of the receiver signal with respect to the points of the detection grid. The method further comprises combining the travel time corrected portions of the receiver signal at the points of the detection grid.

Abstract: Embodiments relate to a system, to methods, and to a processing module for detecting one or more objects in the seabed, wherein the detection of the one or more objects is based on the scattering of the at least one acoustic signal at the one or more objects. The system comprises an attachment structure (10). The attachment structure is intended to mechanically couple a signal source (20) and a plurality of receivers (30) to a vessel or to a propulsion unit. The system comprises the signal source (20) configured to emit at least one acoustic signal towards the seabed. A wavelength of the acoustic signal is adapted to an expected size of the one or more objects. The system comprises the plurality of receivers (30). A distance between adjacent receivers is at most half the wavelength of the acoustic signal. The plurality of receivers is configured to generate a receiver signal based on a scattering of the at least one acoustic signal at the one or more objects.