试验证明：同化效果的好坏与观测精度和观测频率密切相关，存在由于线性化和闭合假设带来的不稳定现象；扩展卡尔曼滤波本身具有强迫纠错作用。
The results indicate that the effect of the assimilation has a closed correlation with the frequency and precision of observation, has an instability brought by .
其次在一定假设下，对产品进行定价，获得定价闭合解；
Secondly, under the certain assumption, the closed form solution of the product is obtained.
假设图中的开关突然闭合到“上”方。
Suppose the switch in the diagram is suddenly closed in the "up" position.
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