一种基于抗差估计的TDOA无线定位方法

Robust Estimation Approach for TDOA Wireless Location

基于时间测量值的TDOA无线定位方法在移动台定位、被动雷达定位、雷电定位、GPS导航等诸多应用中发挥着重大作用。如何减小TDOA定位误差是近年来研究的热点。如果TDOA测量数据中含有粗差,将会给定位解算带来更大的难度。对TDOA的抗差性进行了研究,提出了一种能够抵抗粗差的抗差TDOA定位算法——Robust-Chan方法。仿真显示该算法能很好地抵抗粗差的影响,提高定位的精度。

TDOA wireless locating method based time measurement has play an important role in many applications such as mobile phone location, passive radar location, lightning location, GPS navigation, etc. How to reduce the TDOA locating error is studied too much in recent years. But if TDOA measurement data have gross errors, it is more difficult to the locating computation. A new TDOA locating method--Robust-Chan Method, which can eliminate gross errors is given. Simulations show that this method can avoid the influence of gross errors effectively and improve the locating precision.