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DOA Estimation of Multi-Sources Based on Genetic Simulated Annealing Algorithm

Author: CuiXiaoWei
Tutor: LiuBoSheng
School: Harbin Engineering University
Course: Underwater Acoustics
Keywords: Vector Hydrophone Genetic simulated annealing algorithm Multi-objective DOA estimation Correlation equation
CLC: U666.7
Type: Master's thesis
Year: 2007
Downloads: 312
Quote: 3
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Abstract


Compared with the traditional pressure hydrophone to listen to is , vector hydrophone can at the same time in the same point of measurement of the sound field sound pressure and particle vibration speed , has and frequency -independent point resistance , can target conduct full space blur-free orientation , this information is its signal processing brings more room for development . As the research object , plane wave sound field sound pressure and particle velocity in isotropic noise field , estimated by the orientation of the multi-objective mathematical model using genetic simulated annealing algorithm for solving differential pressure vector hydrophone this mathematical model in order to achieve a single vector hydrophone multi- target orientation estimation. First works same modal vector hydrophone and differential pressure vector hydrophone and signal model is derived , a brief introduction to several common single vector hydrophone directional principle and the use of simulation analysis of a single vector hydrophone to determine the error when the sound source . Isotropic noise field , plane wave sound field sound pressure and velocity of perfect correlation , theoretically derived mathematical model of multi - target orientation estimation . The principles of the genetic algorithm , niche genetic algorithms , simulated annealing algorithm, genetic simulated annealing algorithm analysis and algorithmic programming, and several algorithms search performance compared genetic simulated annealing algorithm to search for the highest accuracy , convergence fastest and using simulation and detailed analysis of the operating parameters and control parameters in genetic simulated annealing algorithm to search accuracy . The use of genetic simulated annealing algorithm for multi-objective mathematical model for multi- target orientation estimation DOA estimation . Two narrowband sound field goals , three narrow goals , two broadband goals , three broadband target simulation study , draw this method is applicable for both narrowband the target and broadband target . The improved method of acoustic field four wideband target simulation studies, the improved method can also be effective to improve the accuracy of calculation . The target number of unknown sound field simulation study .

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CLC: > Transportation > Waterway transport > Marine Engineering > Navigation equipment, acoustic equipment > Acoustic equipment
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