摘要：
Aiming at the problem that it is unable to provide satisfactory indoor positioning results by using global positioning system (GPS), this paper proposed an indoor positioning technology based on the mode of spatial information. By the perception for the characteristic information in space environment, an incremental way to build information was adopted, in combination with the Bluetooth iBeacon with low energy consumption and various sensor information, the characteristic information zone in space was taken as guidepost to correct the cumulative error of dead reckoning, finally, a stable and independent indoor positioning system was achieved. In order to verify the effect of the design ideas, this paper carried out a contrast test for the design, traditional pedestrian dead reckoning algorithm and iBeacon single-point corrected dead-reckoning algorithm, the final results are shown as follows: for the traditional pedestrian dead reckoning algorithm, the average error for hollow-square walking is 0.83 m, the average error for snake-shape walking is 0.95 m; for iBeacon single-point corrected dead-reckoning algorithm, the average error for hollow-square walking is 0.32 m, the average error for snake-shape walking is 0.30 m; for the revised dead-reckoning based on spatial information mode and environment perception means, the average error for hollow-square walking is 0.29 m, the average error for snake-shape walking is 0.09 m, the proposed system reached the standard of indoor positioning, in addition, the paper also verified the effectiveness of the new scheme and the pragmaticality of indoor positioning system.%针对全球定位系统GPS不能提供令人满意的室内定位结果,提出一种基于空间信息模式下的室内定位技术,通过感知空间环境中的特征信息,采用一种增量式信息构建方式,结合低功耗蓝牙iBeacon以及多种传感器信息,以空间中特征信息区为路标修正行航位推算累积误差,最终实现了稳定独立的室内定位系统.为了验证设计思路的效果,通过与传统行人航位推算算法和iBeacon单点修正航位推算结果迸行对比实验,最终结果表明传统航位推算回字形行走平均误差为0.83 m,蛇形行走平均误差为0.95 m;iBeacon单点修正回字形行走平均误差为0.32 m,蛇形行走平均误差为0.30 m;基于空间信息模式环境感知定位方式修正航位推算回字形行走的平均误差为0.29 m,蛇形行走的平均误差为0.09 m.达到了室内定位精度的标准,同时也验证了新方案的有效性以及定位系统的实效性.
