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The Research Of The Vector Hydrophone Array's Processing And The Design Based On DSP

Posted on:2007-08-20Degree:MasterType:Thesis
Country:ChinaCandidate:L YanFull Text:PDF
GTID:2132360185963537Subject:Underwater Acoustics
Abstract/Summary:PDF Full Text Request
Vector Hydrophone has the heart shaped direction or "8" shaped direction, and has no change in vary frequency, it can receive sound field pressure and vibration velocity( v_x, v_y, v_z) simultaneously, it is forth times in information to pressurehydrophone. Comparing with the pressure hydrophone array, Vector Hydrophone array gains much in spatial gain.In this dissertation, we study the beamforming method of single Vector Hydrophone, then, introducing the method of conventional array processing to Vector Hydrophone array processing. Before the system simulation, we design the system circuit to accomplish the application.The main content can be outlined as follows: Introducing the recent development in Vector Hydrophone, algorithm of the signal processing, and the design of the Vector Hydrophone system, studying the type of Vector Hydrophone, single vector hydrophone's beamforming, and the Vector Hydrophone array's beamforming, give out the results of the simulation; In this dissertation, we are focus on the application, so we should chose a suitable construction to achieve this aim. So we introduce the general DSP application system, It is mainly about the development of DSP, the application of TMS320VC54X, multi-processor system, then chose a suitable construction to this Multi-DSPs; Design the hardware of Vector Hydrophone system. It is mainly about the system block diagram, hardware diagram, front signal amplify circuit, level transform circuit, signal sampling module, achieve the function of 6 elements (24) signal's modulation, sampling, singal Vector Hydrophone beamforming and backend Vector Hydrophone array processing, the logic module (based on FPGA) achieve the function to re-config the signal stream, so the system has the ability of algorithm re-config, and make the further research has a flexible hardware basis.
Keywords/Search Tags:Vector Hydrophone, Beamforming, Array signal processing, DSP
PDF Full Text Request
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