Research On Underwater Target Positioning Technology Of Multi-vector Buoys

In recent years,vector buoy is as a new application area,and its application in the water sound system is very wide.In order to obtain more accurate positioning accuracy,the sound pressure buoy and single-vector buoy can no longer meet the needs of use.Therefore,the application of multi-vector buoys joint positioning technology can maximize the measurement of each vector buoy through data fusion technology to maximize the measurement.Information,improve the accuracy of sonar buoy detection.Multi-vector buoys positioning technology is of great significance in military applications and civilian fields.The main research direction of this article is the combination of multi-vector buoys underwater targets.The main research content in this article is as follows: First,the algorithm of sound pressure buoy positioning is studied.The Doppler-CPA positioning algorithm,the HYFIX dual curve positioning algorithm and the LOFIX distance circle positioning algorithm were studied,and the computer simulation was performed according to the LOFIX distance circular positioning algorithm,and the effects of different signal-to-noise ratios,different hobb numbers,and different formations on the positioning error on the positioning error..Second,we have studied multi-vector buoy-coordinate joint positioning technology.The algorithm of the positioning of the dual vector buoy was used to locate the positioning method,and the multivector buoys positioning technology based on the linear weighted fusion,the multi-vector buoys positioning technology based on adaptive weighted integration,and the multi-vector buoys positioning technology fusion of DS evidence theory,Based on the theory of LDS evidence(combined with linear weighted and DS evidence theory),multi-vector buoys positioning technology,on this basis,combines genetic algorithms and LDS evidence theory to obtain GA-LDS evidence theoretical fusion algorithm,and studied GA-based based on GAbased LDS evidence theoretical convergence of multi-vector buoys positioning technology.Through computer simulation results,when the same algorithm is applied,the positioning effect of nine vector buoy random distribution is better,and the larger the signal-to-noise ratio,the smaller the positioning error,and the accurate positioning accuracy;When randomly distributed the number of buoyant clams,the positioning accuracy of multi-vector buoys positioning technology based on GA-LDS evidence theory is more accurate.Third,use the external test data and use the method of fusion of GA-LDS evidence theory to verify it.The results show that the use of multi-vector buoys positioning technology,the measuring error after the fusion should be smaller than the direction error of any single vector buoyant.After the fusion,the balance of the equity root is 18.6m,and the relative error can reach less than 10%.