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If topography and geomorphology are asynchronously measured at different measuring points with a variety of sonar devices, a complex data fusion problem will be caused. In order to avoid this problem, a new technology is developed to the multi-subarray detection method which is used in multibeam bathymetry sonar. By doing this, it can obtain high quality seafloor topography and geomorphology at the...
Limited by the cost, the size of multibeam bathymetric sonar becomes smaller. It is a significant issue to increase the beamforming capability of small aperture array. As the most commonly used method at present, virtual aperture technique together with LPAE beamforming method is discussed in detail in the paper. Compared with conventional beamforming method through theoretical analysis and computer...
This paper proposes a scheme for the realization of multi-beam synthetic aperture sonar (SAS) based on the multi-beam bathymetry and aperture synthetic principle, designs a new multiple receiver array structure, deduces correlative math model, and simulates the dot-by-dot imaging algorithm according to the novel array structure. Computer simulation results have tested the correctness of theory analysis...
Because parametric array can generate wide band and narrow beam low frequency signals, it is widely used in high resolution subbottom profiling. Parametric sonar has been one of the most effective equipment in seabed configuration detection and property identification. Emphases of this paper are on source signal correction of wide band parametric subbottom profiler, so we can get desired difference...
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