一种接收信号强度的室内定位稳健估计方法

A Robust Estimation Method for Indoor Localization of Received Signal Strength

随着人们在室内活动的范围和时间逐渐增加,对室内定位的需求也日益增加,本文介绍了目前主要的室内定位技术,并对基于测距的几种常用的室内定位方法原理进行说明,提出一种接收信号强度的室内定位的稳健估计方法。以接收信号强度的室内无线定位对数路径损耗测距模型为切入点,通过实验测定和曲线拟合的方法获取接收信号强度的测距模型参数,并分别采用经典最小二乘法和本文提出的稳健估计方法进行室内定位求解,试验结果表明本文方法室内定位解算精度更高、鲁棒性更好。

With the gradual increase of the scope and time of people's indoor activities,the demand for indoor positioning is also increasing,this paper introduces the main indoor positioning technology,and explains the principles of several commonly used indoor positioning methods based on ranging,and proposes a robust estimation method for indoor positioning of received signal strength.Taking the indoor wireless positioning logarithmic path loss ranging model of received signal strength as the starting point,the ranging model parameters of the received signal strength are obtained by experimental measurement and curve fitting,and the classical least squares method and the robust estimation method proposed in this paper are used to solve the indoor positioning,and the experimental results show that the indoor positioning solution of the proposed method has higher accuracy and better robustness.