分析了 IEEE 802.15.4a的信道模型，并分析了现今测距的方法：CHAN与TAYLOR等，并在此基础上做了改进-Analysised the channel of IEEE 802.15.4a,and analysised some methods for TDOA and TOA .

主要用MATLAB 仿真了蜂窝网无线定位TDOA中经典的一些算法如CHAN ,TAYLOR,SI算法等并做了性能分析和比较。。希望对初学定位的同学有用-Major cellular network wireless positioning TDOA classic algorithm CHAN, TAYLOR, SI algorithm MATLAB simulation and performance analysis and comparison. . Hope for beginner p