一种新的非差FCBs估计方法

A New Method for Undifferenced FCBs Estimation

提出了一种新的非差FCBs估计方法,利用三角函数周期特性消除整周模糊度,避免了模糊度固定的难题。基于该方法,实现了PPP模糊度固定。实验结果表明,模糊度固定后,北、东、高程3个方向上的RMS分别从1.44 cm、3.37 cm、2.88 cm减小到0.75 cm、0.78 cm和2.06 cm,分别提高约47.8%、76.8%和28.5%。

This article proposed an improved undifferenced FCBs estimation method. We eliminated integer ambiguity by using the periodic feature of trigonometric function. Thus, the difficulty of ambiguity fixing in undifferenced FCBs estimation has been overcome. Based on the method, this article realized the PPP ambiguity-fixed resolution and the RMS of N, E, U directions decreased to 0.75,0.78 and 2.06 cm from 1.44, 3.37 and 2.88 cm, with improvements of 47.8%,76.8% and 28.5%.