超宽带无线定位系统及算法研究

System Design and Algorithm Research of UWB Wireless Location

超宽带技术具有抗干扰效果好、安全性高、能提供精确定位等优点,成为无线定位的首选技术。主要从传统的若干定位技术入手,结合各种定位技术的优缺点,提出一种结合波达时间差(TDOA)、波达时间和(TSOA)方法的超宽带无线混合定位算法,该算法需要参考节点少,定位精度高,适用范围广。实验结果表明,定位系统适合隧道定位,TDOA/TSOA混合定位算法的测量距离为200 m,定位精度误差在40 cm以内。

Because the ultra-wide band technology possesses many advantages, such as the good anti-interfer- ence effect, high security, and the precise positioning, the ultra-wide technology becomes the primary choice in the wireless positioning technology. Positioning system small size, low power consumption, convenient installation, Al- gorithm mainly started with the traditional positioning technology, combined with the advantages and disadvantages of various positioning technology, proposes an ultra-wide band wireless hybrid positioning algorithm which is the combination of the TDOA and the TSOA. This algorithm can use few reference nodes, have a high positioning pre- cision and applied in a wide range. The results show that, the hybrid location algorithm of TDOA/TSOA measured the distance at 200 m, the error of the location accuracy is within 40 cm.