TDOA and track optimization of UAV swarm based on D-optimality

• 来源期刊: 系统工程与电子技术（英文版）
• 年，卷（期）: 2020,（6）
• 所属期刊栏目: ELECTRONICS TECHNOLOGY
• 页码范围: 1140-1151
• 页数: 12页
• 语种: 英文
• DOI: 10.23919/JSEE.2020.000086

摘要

To solve the problem of time difference of arrival(TDOA) positioning and tracking of targets by the unmanned ae-rial vehicles (UAV) swarm in future air combat,this paper adopts the TDOA positioning method and uses time difference sensors of the UAV swarm to locate target radiation sources.Firstly,a TDOA model for the target is set up for the UAV swarm under the condition that the error variance varies with the received sig-nal-to-noise ratio.The accuracy of the positioning error is ana-lyzed by geometric dilution of precision (GDOP).The D-optima-lity criterion of the positioning model is theoretically derived.The target is positioned and settled,and the maximum value of the Fisher information matrix determinant is used as the optimiza-tion objective function to optimize the track of the UAV in real time.Simulation results show that the track optimization im-proves the positioning accuracy and stability of the UAV swarm to the target.