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通过对无线传感器网络RSSI定位和Zigbee网络指纹数据库的研究,本文利用指纹数据库计算用户坐标位置,提出利用高斯滤波对Zigbee网络指纹数据库进行信息采集和优化,在定位阶段对数据进行高斯滤波处理,从而建立高精度的指纹数据库。结果表明:利用Zigbee指纹数据库实现短距离范围内定位效果较好,而且在优化指纹数据库后再进行定位时,定位精度显著提高。
Through the research of RSSI positioning and Zigbee network fingerprinting database, this paper uses the fingerprint database to calculate the user coordinate position, and proposes the use of Gaussian filter to collect and optimize the Zigbee network fingerprint database, and the data is processed by Gaussian filter in the positioning phase. Establish a high-precision fingerprint database. The results show that using Zigbee fingerprint database to achieve the positioning within a short distance is effective, and the positioning accuracy is significantly improved after the fingerprint database is optimized.