一种基于加权因子调节的伪卫星室内定位方法

A Pseudolite Indoor Positioning Algorithm Based on Weighting Factor Adjustment

基于伪卫星载波相位差分的室内定位方法成为提高室内定位精度的一种手段。由于多通道伪卫星发射天线的老化、损坏等原因,引起所输出的载波信号相位误差变大,进而导致定位误差变大。针对该问题,提出了一种加权因子调节的多通道伪卫星载波相位差分室内二维定位方法。引入了基于多通道伪卫星的载波相位差分定位方法,在此基础上对不同输出天线的载波相位误差进行加权因子调节,减弱病态天线输出的载波对定位精度的影响。仿真实验表明,该方法在发射天线的老化、损坏条件下,能够有效地提高室内二维定位精度。

Indoor positioning method based on pseudolite carrier phase is an effective method to improve indoor positioning accuracy.However,the positioning accuracy may decrease when the carrier phase error output by an antenna increases due to antenna aging or damage.To solve this problem,a two-dimensional indoor location algorithm based on weighting factor adjustment and multi-channel pseudolite carrier phase difference is proposed.First,the method of carrier phase difference(CPD) based on multi-channel pseudolite is described,then,the carrier phase errors of different output antennas are adjusted by weighting factors to reduce the influence of the sick antenna on the positioning accuracy.The simulation results show that the proposed method can effectively improve the accuracy of two-dimensional indoor positioning.