The Detection Technology Of Underwater Acoustic Vector Arraies Based On Small-scale Operate Platform

In recent years, with the rapid development of small AUV for underwater work platformsand underwater robotics, the robot underwater world attention, and used in military andmarine development. In this thesis, a small-scale line array as the basis, by the theoreticalderivation of the formula, analysis and MATLAB simulation, and finally the theoreticalanalysis with simulation results than to focus on the acoustic detection of underwater smalloperating platform and the technical difficulty vector sensor used in small-scale operationsplatform to provide a theoretical basis and testing of reserves.In Software simulation, first, introduce the vector hydrophone signal processing based onthe theoretical basis and this leads to a single vector hydrophone measurement principle, andat the same time delay difference beamforming technology. Focus on a small platform vectorarray integrated average sound intensity, and copy related with vector array and vector arrayadaptive related to the basic principles and the three methods of estimation, the MATLABsimulation analysis of the gain and the probability of detection. Correlator and adaptivecorrelator azimuth estimated curve and gain curve and then copy the vector array werecompared.Followed by small operating platform based on underwater synthetic aperture technique,first introduced the definition of the synthetic aperture technique, development history andcurrent situation of research leads to the the ETAM algorithm based on spectral characteristicsof the ship noise line, and then through a series of theoretical analysis and formulas. This partfocuses on the simulation analysis estimated the ETAM position of the small platform.The last part of the programming of the ship noise, first introduce the embeddeddevelopment environment, including the establishment of cross-compilationenvironment,configure the target board, the kernel configuration compiled to guide specificsteps to start the Linux kernel; ship radiated characteristics of the noise, the simulationprocess; ship radiated noise hardware platform implementation steps, and the line spectrumsignal generated in the Linux environment running on the OMAP platform results after cross-compiler, and finally will run using MATLAB sinmulation.