一种双导航系统组合定位数据概率圆半径的评定

对于由双导航系设备(系统)进行组合后的定位输出数据，所获得的船位由于其各自的不确定度不同，将其融合后所得的船位应为双导航设备给出船位的加权平均，融合后的定位概率圆半径也应由不确定度进行新的重新评定。文中给出了基于不确定度的双导航设备组合后的定位输出数据融合评定，并给出了新的定位概率圆半径计算方法，使由双导航设备组成的组合导航系统的导航参数输出具有更好的可信度。其结论可推广至多导航设备(系统)的组合导航输出导航参数的评定。

Evaluation on Probability Radius from Combination of Two Navigation Systems Based on Uncertainty

The weight average position values are given in case combining the two navigation systems because there are different uncertainty values from either system output during the dynamic measurement, so is the probability radius of position errors. The paper outlines an evaluation on the uncertainty theory based on series parameter process measurement for position and probability radius, which gives a high reliability. The result is useful for the system with more than two subsystems.