基于EKF的TDOA/AOA定位算法解决TDOA多解难题

EKF-based TDOA/AOA Positioning Algorithm Solves TDOA Multi-solution Problem

基于到达时间差TDOA的定位算法,采用双曲线相交的定位原理,在定位锚点较少或者锚点布局不合理的情况下,会存在定位区域中双曲线相交不止一点的情况,致使算法存在取舍困境。通过引入到达角度AOA辅助信息,使用基于扩展卡尔曼滤波EKF的TDOA/AOA定位算法,来解决TDOA定位算法中存在的上述问题。大量仿真证明,算法能有效解决该问题。

Based on the positioning algorithm of the arrival time difference TDOA,the positioning principle of hyperbolic intersection is adopted.In the case that the positioning anchor point is less or the anchor point layout is unreasonable,there will be more than one intersection of hyperbola in the positioning area,resulting in a dilemma of the algorithm.This paper introduces TDOA based on extended Kalman filter EKF by introducing angle of arrival AOA auxiliary information.