摘要
对基于TOA/TDOA无线定位算法进行了研究和比较,分析了基于TOA的精确测距技术。针对现有的定位算法通常是二维形式的问题,在Chan定位算法基础上推导了Chan算法的三维形式,提出了一种基于TOA的三维空间定位算法。算法的主要思想是两次使用加权最小二乘法(WLS)得到初始解,利用初始解将非线性定位方程组线性化,最终得到位置估计。仿真结果表明该算法结构简单,精度较高,有较强的理论参考价值。
Wireless location algorithm based on TOA/TDOA has been researched and compared, and precise ranging technology based on TOA has been analyzed in this paper. In view of that the existing location algorithm is always in 2 - dimensional form, Chan algorithm has been concluded in 3 - dimensional form and a 3 - dimensional lo- cation method based on TOA is proposed. The method transforms the nonlinear location equation into linear form by using initialization estimation coming from two - step weighed least square, then calculates the location estimation. The method is simple and precise. The simulation shows its theoretic value.
出处
《计算机仿真》
CSCD
北大核心
2009年第1期323-326,共4页
Computer Simulation
