基于惯导辅助地磁的手机室内定位系统设计

目前的室内定位技术大都是需要建立足够多的信号节点，这种有源信号受建筑物干扰衰减快导致其定位精度不足。为了避免这些存在的问题，通过深入研究室内定位方法，提出了基于惯导辅助地磁匹配的适用于手机移动终端的室内定位方法。有别于传统的室外定位系统，本文利用地球磁场在不同点的差异化信息，并通过选择适当的地磁匹配算法，可以实现不依赖于外部设备的移动个体室内定位，同时通过惯导辅助地磁的组合定位方式有效增加地磁信息匹配效率，能获得较高的室内定位的精度。最后设计了基于android平台的手机室内定位软件，可利用手机内置的传感器设备实现室内定位功能，仿真及实验显示该定位方法是有效的。

The Design of Cellphone Indoor Positioning System Based Magnetic Assisted Inertial Navigation Technology

To implement indoor positioning,sufficient signal nodes fast attenuated by the interference of the con?struction and consequently cause the low positional accuracy,are mostly required. In order to avoid the existing problem,by further studying the technologies of indoor positioning,a positioning algorithm with inertial navigation technology assisted geomagnetic matching that suits for cellphone terminal indoor positioning is presented. Different from the traditional outdoor positioning system,by taking advantage of differentiated information of Earth's magnet?ic field at different points and selecting an appropriate geomagnetic matching algorithm ,the indoor positioning of cellphone devices without depending on external devices can be achieved,simultaneously applying the combined lo?calization method of inertial navigation-assisted geomagnetic positioning improve the indoor positioning accuracy. Finally,a cellphone indoor positioning software which is based on Android platform is novelly and successfully de?signed with mobile built-in sensors,Simulations and experiments show that this localization method is effective.