Research On Disoperative And Multiple Target Tracking Of Distributed Positioning System

This paper is derived from a distributed multi-target positioning system in the background of underwater counterwork.With the development of underwater counterwork technology,the demand for multi-target positioning in modern shooting range is becoming more and more urgent.The system has the ability to detect continuous signals as well as pulse signals,and there are multiple signal sources that are transmitting two kinds of signals.Parameters such as signal frequency are unknown.For the distributed multi-target positioning system,its most important function is to distinguish the target batch and achieve tracking and positioning of multiple targets.It involves a variety of underwater acoustic technologies,including basic underwater acoustic positioning technology,time-space association technology and data association technology.This paper has studied the above technologies.In this paper,the commonly used pure-azimuth intersection localization algorithm and hyperbolic intersection localization algorithm are studied.Additionally,because of the data redundancy in the distributed positioning system,this paper also studies a delay difference/azimuth information joint localization algorithm;Aiming at the problem of data mismatch between platforms,this paper studies the iterative method and the hand-voting method for continuous signal and pulse signal respectively;Data association is the focus of multi-target tracking system,but the traditional multi-dimensional assignment algorithm increases exponentially with the increase of the number of platforms and the number of targets.Therefore,from the perspective of practical engineering application,this paper studies a multi-objective azimuth data probability correlation algorithm and a delay difference/azimuth-based delay difference nearest neighbor algorithm for continuous signal and pulse signal.Finally,based on the theoretical analysis and simulation verification of the above multi-target positioning technology,this paper starts from the functional requirements of the display and control software of the distributed positioning system,adopts the modular idea,and designs the software to make the software have multi-target tracking and positioning capability.And the software is tested by simulation data to verify the correctness of the software.