基于ZigBee的室内定位方法分析和验证

Analysis and Verification of Indoor Position Method Based on ZigBee

采用ZigBee无线通信网络为核心并选择位置指纹与三角质心算法相结合的定位方案,分析了实验场景下信号强度的统计特征;从统计结果入手,进行ZigBee信号测距的可行性分析,优化了基于接收的信号强度指示(RSSI)的测距方程。进而使用改进的位置指纹法和优化的参考节点布局方案完成定位。实验结果表明,相比传统方法,位置指纹与三角质心算法相结合的定位方案大幅度提高了定位精度。

Taking ZigBee wireless communication network as the core technolo and useing the positioning scheme which was combined with position fingerprint and triangle eentroid algorithm,the statistical characteristics of signal intensity in the experimental scene was analyzed. Based on the statistical results,the feasibility of ZigBee signal ranging was analyzed. And the ranging equation based on received signal intensity indication （tlSSI） was optimized. Then the improved position fingerprinting method and the optimized reference node layout scheme was used to complete the localization.The experimental results showed that,compared with traditional methods,the positioning accuracy was greatly improved by combining the position fingerprinting with the triangle eentroid position algorithm method.