Physical Augmentation Factor of Precision in Gnss

Abstract The dilution of precision (DOP) in satellite navigation system provides a simple characterization the user–satellite geometry and quantitative assessment positioning constellation configuration. essential idea physical augmentation factor (PAFP) proposed this work, is that signals are transmitted at multiple frequencies from each visible constellation, while users measure corresponding pseudoranges satellites to achieve high code positioning. As one measured independently by different frequencies, it reasonable treat measurement errors due clock ephemeris, atmospheric propagation as uncorrelated, random, identically distributed. multipath effects receiver noise also processed with some empirical models. By measuring PAFP offers scheme produces same effect redundant-overlapping thus equivalently improving geometric DOP. It can effectively improve system.