摘要
随着无线网络的发展与普及,室内定位越来越受到人们的关注;但是由于墙体等障碍物的存在和多径效应严重,室内环境相对复杂,对定位精度的要求也比较特殊;文章研究基于信号强度值(RSSI)的定位技术,引入滤波算法,对RSSI值进行修正,采用迭代的三边测量法估计出坐标位置,并结合TI公司的带定位引擎的片上系统CC2431,通过仿真和实验验证了算法的可行性和优越性,较CC2431减小了定位误差,提高了定位精度。
Due to the development and popularization of wireless network, indoor location technology plays a more important role on people＇s lives and production. However, because of the existence of obstacles such as walls and the effects of severe multi-- path, it makes Indoor environment relatively complex and the requirements of positioning accuracy special. Article research RSSI based location technique, it imports smoothing algorithm to calibrate the RSSI and use iterative trilateration to estimate the position . It introduces the application of TI＇s CC2431 which is integrated location engine. According to simulation and experiments, results reveal the feasibility and superiority of algorithm. It outperforms CC2431 in terms of accuracy and error.
出处
《计算机测量与控制》
CSCD
北大核心
2009年第12期2500-2503,共4页
Computer Measurement &Control
