The Application of Multi-subarray Amplitude-Phase United Detection Method in Multi-beam Bathymetry System

Amplitude based methods or phase based methods are usually used in multi-beam bathymetry system and chosen according to some rule,which may bring about unpredictable errors if wrong choose occurs. The article proposes an multi-subarray amplitude-phase united detection method simultaneously using information of amplitude and phase of echo from sea bottom and integrating the merits of the two traditional methods,which not only realizes the super-wide coverage,but also improves the detection performance.By simulating data and experimental data,we have tested the technique and obtained good result.