它们可统一处理，滤波，平滑和预报问题，且具有渐近稳定性。
They can handle the prediction, filtering and smoothing problems in a unified frame work, and have asymptotic stability.
它们具有全局渐近稳定性，且通过配置估值器的极点可按指数衰减速率使初始状态估值的影响快速消失。
They have globally asymptotic stability, and can forget the effect of the initial state estimates at an exponentially decaying rate by assigning the poles of the estimators.
渐近鞅型序列具有很好的性质，本文给出实值渐近鞅的四个等价命题，并应用停时理论对它们予以证明。
Amarts have very good properties. This paper gave the four equivalent propositions of R-Value's amart and their proofs by utilizing the theory of stopping time.
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