基于ZigBee进行室内无线定位系统的开发已经成为热点,这是由于采用无线通信可以节省成本,使用也更加方便.但同时,基于接收信号强度指示(RSSI)的测距和定位易受多种因素的影响,使得测距和定位的误差都比较大.提出了针对室内小环境范围内的定位系统,提出了获取RSSI的方法(中值过滤和均值过滤)和定位的优化算法(基于极大似然估计法加权取均值的定位优化算法),通过两种方法的结合,提高了定位精度.同时,利用LabVIEW软件开发上位机.%Indoor wireless location system based on ZigBee development becomes a hot spot,because the use of wireless communications,it can save cost, and more convenient to use. At the same time, based on the location and orientation of the Received Signal Strength Indication (RSSI) vulnerable to a number of factors, making ranging and positioning errors are relatively large. Positioning system for indoor-environment-wide is presented in this paper, make a way to access the RSSI(median filtering and mean filtering)and positioning optimization algorithm (based on maximum likelihood estimation method for optimizing algorithm of weighted to get location),through a combination of two methods,which improves positioning accuracy. At the same time, LabVIEW software is used to development PC.
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