通过对可观测性能分析，得出了这样的结论：仅用伪距和伪距变化率为观测量的组合系统对姿态角误差的可观测性较差。
Observability analysis shows that the integration system, in which only GPS pseudo range and delta pseudo range are the observable, can not assure favorable observability of the attitude error angles.
系统误差估计是雷达组网融合跟踪系统的重要环节，而可观测度又是决定误差估计效果的关键因素。
Systematic error estimation is an important process for data fusion and target tracking in radar networking system, and observability is the key factor which determines the estimation accuracy.
通过对INS系统可观测性进行分析，得出增加不同种类的外部导航信息观测量将有效提高INS误差修正能力的结论。
By the observed capability analysis of INS, adding more kinds of external navigational information the integrated navigation system can promote the capability of INS error-correction.
理论分析结果表明，两位置对准可以提高系统状态变量的可观测度，尤其对加速度计误差和方位失准角的可观测度提高作用明显。
Theory analysis showed that the method of two-position alignment increases the observability degree of state variables, especially for the error of accelerometer and azimuth misalignment.
通过对INS误差可观测性分析，可以看出增加不同种类的外部导航信息观测量，将有效提高INS误差修正能力。
From the system observability analysis, adding more kinds of external measurements into the inertial navigation system can enhance estimation accuracy of INS error.
然后，通过对误差方差阵逆矩阵秩的分析，比较详尽地分析了不同数量视线观测条件下导航算法的可观度和可观性。
Then, navigation system observability and observable degree with different quantitative line-of-sight measurements are analyzed in detail by rank analysis of the error variance inverse matrix.
然后，通过对误差方差阵逆矩阵秩的分析，比较详尽地分析了不同数量视线观测条件下导航算法的可观度和可观性。
Then, navigation system observability and observable degree with different quantitative line-of-sight measurements are analyzed in detail by rank analysis of the error variance inverse matrix.
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