基于分段信噪比加权的GPS定位方法

A method of GPS positioning based on piecewise and weighted signal-to-noise ratio

在基于GPS的飞行器定位中,GPS卫星的情况与地面不同,传统的GPS选星算法有局限性。为了实现飞行器快速、可靠的定位,提出了一种新的基于分段信噪比加权的GPS定位方法。实验表明,相对传统选星算法,本方法的定位稳定性更好、精度更高、计算时间较短,能够满足飞行器快速、可靠定位的要求。

In positioning and navigation of aircrafts, situation of GPS satellites is largely different from ground situation, so the traditional GPS satellites selection algorithms have localization. In order to realize quick and robust positioning of aerial vehicles, a novel GPS positioning method based on piecewise and weighted signalto-noise ratio is put forward. Software simulation shows while guarantying positioning accuracy, this very method can provide a better positioning accuracy, a better interference immunity and a higher calculating speed than that of those traditional ones.