A Network Localization Method with Multi-Acoustic Sensor Array for Underwater Target

A network localization algorithm with multiple five-element acoustic sensor arrays is proposed to solve the precise orientation of underwater targets, which is affected by environmental disturbance,and acoustic sensors are used as the core.A multiple five-element arrays acoustic sensor localization model is build based upon the underwater spatial relationships.A calculation formula of the spatial location of underwater targets and error analysis are given by studying and analyzing the multiple five-element arrays acoustic sensor localization algorithm of network structure.The analysis results show that the accuracy of positioning parameters of the multiple five-element arrays acoustic sensor localization algorithm is related to the disposal way of acoustic sensor array and the time delay among the acoustic sensors.The azimuth,pitch angleand distance errors of the underwater target increase as the time delay increases.Simulation and comparison in the same area between the single five-element array acoustic sensor localization algorithm and the multiple five-element arrays acoustic sensor localization algorithm show that the measurement error of the multiple five-element arrays acoustic sensor localization algorithm is smaller than that of the single five-element array acoustic sensor localization algorithm.The result verifies advantage of the multiple five-element arrays acoustic localization algorithm,that is,its test accuracy is excellent.The algorithm provides a technical method for the precise orientation of underwater targets and the design of precision-guided munition,and lays a foundation for the detection of underwater targets.