摘要
以IEEE802.11b为例介绍了WLAN的技术特点,探讨了基于WLAN的移动终端无线定位技术的原理。提出在WLAN中使用TDOA定位方法的Chan算法对移动终端进行位置估计。然后对位置估计结果使用残差加权算法进行NLOS误差抑制。提出了一种抑制多个NLOS误差的残差加权算法,通过仿真对比证明了该算法对多个NLOS误差具有更好的整体抑制效果。
Take IEEE802.11b for example,this thesis introduces the technology characteristics of WLAN,and makes an inquiry into the principle of wireless location for mobile terminal based on WLAN.Using Chan algorithm of TDOA location method in WLAN to estimate position is proposed.Then it uses Residual Weighting Algorithm to the result of estimation in order to restrain NLOS error.A Residual Weighting Algorithm to restrain much amount of NLOS error is proposed. Comparisions in the simulation show that this algorithm has better overall result to restrain much amount of NLOS error.
出处
《计算机与数字工程》
2007年第2期117-119,共3页
Computer & Digital Engineering
基金
河南省杰出人才创新基金项目(编号:0221000200)资助。
