虚拟观测量与高精度器件量测量搭配可实现对姿态的校正。
Combined with the high accuracy measurement, the virtual measurement can realize the measurement update.
模型的不确定性(模型误差)是通过建立的虚拟观测方程来考虑的。
The model uncertainties or model errors also can be considered through some fictitious observation equations.
它能够在线估计虚拟观测噪声的统计特性，从而克服了观测模型线性化误差带来的不良影响。
Owing to estimating the statistics of virtual noise on line, it overcomes the bad affect caused by linearization of nonlinear observation model.
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