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随着手机的普及,室内定位成为研究的热点。在反窃听或者地震、火灾的救援中,需要定位设备对目标设备进行无源定位。而由于室内复杂的电磁环境,多数无源定位算法定位误差较大。根据接收的信号强度指示(RSSI)设备和位置指纹定位的优点,采用虚拟坐标与实际坐标映射的方式,实现了位置指纹的室内无源定位技术。该技术具有较高的定位准确度和精确度,并且可以用户依据对定位精度高低来建立数据库。
With the popularity of mobile phones, indoor positioning has become a hot spot for research. In anti-eavesdropping or earthquake, fire rescue, the need for positioning equipment to target equipment for passive positioning. Due to the complex electromagnetic environment in the interior, most passive positioning algorithms have larger positioning errors. According to the advantages of received signal strength indicator (RSSI) device and location fingerprinting, the method of virtual coordinate and actual coordinate mapping is adopted to realize the indoor passive location technology of position fingerprinting. The technology has high positioning accuracy and accuracy, and users can build a database based on the level of positioning accuracy.