摘要
提出了一种无线移动网中移动台场强法定位的新算法。计算机模拟结果表明：合理、动态地选择目标函数的加权因子，能够有效地克服多径效应及不规则地形所引起的场强起伏对定位精度的影响，在相邻基站间距为５ｋｍ，场强的标准偏差分别为１，２，３ｄＢ的情况下，平均定位误差分别为１２０～２１０ｍ，１６０～４４０ｍ，１９０～６４０ｍ。
A new mobile station locating algorithm by the signal attenuation method is devel- oped. The computer simulation shows that the locating error caused by the multipath effect and terrain irregularities can be reduced by means of reasonable and dynamic selection of weighting factors of the cost function. ln the case that the labor base stations are separated from each other by 5 km, the mean locating errors are 120～210 m, 160～440 m, and 190～640 m correspond- ing to the standard deviation of the signal strength 1, 2, 3 dB, respectively.
出处
《北京邮电大学学报》
EI
CAS
CSCD
北大核心
1998年第3期23-27,共5页
Journal of Beijing University of Posts and Telecommunications
关键词
蜂窝网
场强法
定位算法
移动通信
cellular networks
signal attenuation method
locating algorithm
