电讯技术2025，Vol.65Issue(10)：1681-1687,7.DOI:10.20079/j.issn.1001-893x.240608001
采用双向收缩优化的TDOA区间定位算法
A TDOA Interval Localization Algorithm Based on Bidirectional Contraction Optimization
张文健 1苏轩 2周彪2
作者信息
- 1. 无锡职业技术学院 物联网工程学院,江苏 无锡 214121
- 2. 江南大学 物联网工程学院,江苏 无锡 214122
- 折叠
摘要
Abstract
For the issue of positioning errors caused by the numerical uncertainty of traditional time difference of arrival(TDOA)localization methods,a TDOA interval localization algorithm is propsed based on bidirectional contraction optimization.In the interval forward contraction phase,the algorithm resolves positioning failures induced by the base station layout through coordinate system rotation.It ingeniously transforms time difference measurements into hyperbolic interval representations,discretizes the hyperbolic intervals into a set of rectangles using binary method,and performs interval intersection operations to contract the initial localization area.In the interval backward contraction phase,the algorithm contracts the hyperbolic intervals backward using the initial localization area.The algorithm ultimately converges to obtain the interval localization results.Simulation results demonstrate that the optimized algorithm reduces the estimated interval from 40.10 m2 to 22.20 m2,a decrease of 44.6%,without affecting the localization accuracy and achieving the Cramér-Rao lower bound,and the confidence level remains above 99.3%.关键词
到达时间差/区间定位/双向收缩优化/二分法/坐标系旋转Key words
time difference of arrival(TDOA)/interval localization/bidirectional contraction optimization/binary method/coordinate system rotation分类
信息技术与安全科学引用本文复制引用
张文健,苏轩,周彪..采用双向收缩优化的TDOA区间定位算法[J].电讯技术,2025,65(10):1681-1687,7.
