Positioning method and apparatus based on indoor virtual landmark

Abstract

The invention is applicable to the field of wireless indoor positioning, and provides a positioning method and apparatus based on an indoor virtual landmark. The method comprises the steps of acquiring acceleration data of a user, moving direction data and a wireless signal receiving strength RSS value of a position by using a mobile terminal, and taking the wireless signal receiving strength RSS value as an RSS fingerprint of the position; identifying behaviors of the user entering or leaving an indoor virtual landmark according to the acquired acceleration data of the user and the RSS fingerprint; taking the position of the indoor virtual landmark as a reference point, acquiring the moving distance and moving direction, and establishing and updating a positioning fingerprint database; and according to the user fingerprint acquired in real time and a fingerprint in the positioning fingerprint database, positioning the user in real time, generating an indoor positioning result, and modifying the indoor positioning result according to the identification of the behaviors of the user entering or leaving the indoor virtual landmark. The invention can improve the accuracy of user positioning, and can also perform indoor positioning directly by using the mobile terminal while saving the equipment cost. 本发明适用于无线室内定位领域，提供了一种基于室内虚拟地标的定位方法及装置，方法包括：利用移动终端采集用户的加速度数据、移动方向数据以及所在位置的无线信号接收强度RSS值，将无线信号接收强度RSS值作为位置的RSS指纹；根据采集的用户的加速度数据和RSS指纹，识别用户进入或者离开室内虚拟地标的行为；以室内虚拟地标的位置为参考点，获取移动距离和移动方向，建立和更新定位指纹库；根据实时采集的用户指纹以及定位指纹库中的指纹，实时定位用户，生成室内定位结果，并根据对用户进入或者离开室内虚拟地标的行为的识别，修正室内定位结果。本发明既可以提高用户定位的精度，也可以在节约了设备成本的情况下，直接利用移动终端进行室内定位。