Research on distance measurement based on RSSI of ZigBee

Distance measurement based on RSSI, featuring low communication overhead and low complexity, is widely applied in the range-based localization of the wireless sensor networks. We first analyze the theory of distance measurement based on RSSI and the influence of environment on RSSI, and then we propose three experimental data processing methods. After using the ZigBee-based hardware platform to test the measurement error of the three methods, we draw the conclusion that the measurement error of Gauss model is 2 meters within 20 meters without consideration of circumstances effects.