光纤陀螺二位置寻北结果的测量不确定度评定

Uncertainty analysis on the two-position north determining based on FOG

二位置寻北由于其实现简单,成为光纤陀螺寻北的一种重要方案。如何对二位置寻北方案的测量结果进行准确而可靠的评价,对该方案在光纤陀螺寻北中的应用具有指导意义。本文针对一般评价方法的局限性,提出用测量不确定度的评价方法对光纤陀螺二位置寻北方案进行分析。基于二位置寻北的数学模型,给出了其测量不确定度分析的具体过程。实例计算表明,测量不确定度为光纤陀螺二位置寻北提供了一种准确的评定方法,可用于对各种寻北方案进行分析与评价。

The two-positions north determining based on fiber optic gyroscope（FOG） has been a significant scheme because of easy realization.It is important how to evaluate the measure result accurately and reliably in the applications of two-positions north determining.In order to resolve the limits existed in common evaluation methods,the uncertainty of measurement was presented and its analysis process was introduced in detail on the basis of the mathematical model of two-positions north determining in this paper.The calculations showed that the uncertainty of measurement provided an accurate evaluation method for two-positions north determining based on FOG and could be used to evaluate all kinds of north determining scheme.