摘要
基于接收信号强度指示(RSSI,Received Signal Strength Indicator)的定位算法,由于无线信号受到多径衰减、障碍物、噪声等因素的影响,定位误差值一直较大。通过对基于RSSI定位算法的分析,在矩形栅格划分概率定位算法的基础之上,提出一种改进型算法——三角形栅格划分概率定位算法。实验结果显示,节点定位误差进一步减小,进一步提高了节点定位精度。
The location algorithm based on RSSI （Received Signal Strength Indicator）, for the wireless signals being affected by some factors including multipath fading, obstacles, noise and so on, always has a fairly large location error value. Through analysis of the location algorithm based on RSSI, a modified algorithm （triangular grid division probabilistic location algorithm） based on rectangular grid division probabilistic location algorithm is proposed. Experimental results show that the node location error is further decreased, and location accuracy fairly improved.
出处
《通信技术》
2012年第12期131-133,136,共4页
Communications Technology
