Some advances of underwater acoustic imaging research for UUV

In this paper, some research results for underwater acoustic imaging are presented. Three different structures of the systems are included: first one is composed of a sonar head of SeaBat 6012 and related digital electronics. The second and third systems use rectangular acoustic transducer array and linear array respectively. Both of acoustic signals acquired by the arrays are totally digitized by the related electronics and processed by the advanced DSP boards. So both imaging processes are absolutely digital. They have the advantages of easy implement, programmable, and compact, etc., so that they can meet to the variant missions of UUV (unmanned underwater vehicle).