中文摘要：

在这篇论文， H 无穷修理落后变光滑的一条新途径被使用革新分析理论开发。更光滑被诉诸扩大状态导出。然而，与以前的工作完全不同，这里的扩充状态为导出评估者被看作就一个理论数学工具。为扩充系统的 Riccati 方程的一个分布式的算法被介绍。评估者的计算不要求任何扩大。在新途径和以前的工作之间的 compulation 费用的比较被做。在这篇论文使用的主要技术是在一个不定的空格的 re-organizedinnovation 分析。

英文摘要：

In this paper, a new approach to H-infinity fixed-lag smoothing is developed by applying the innovation analysis theory. The smoother is derived by resorting to the augmentation state. However, being completely different from the previous work,the augmented state here is considered as just a theoretical mathematical tool for deriving the estimator. A distributed algorithm for the Riccati equation of the augmented system is presented. The calcuhtion of the estimator does not require any augmentation. The comparison of the computation costs between the new approach and previous work is made. The main technique applied in this paper is the re-organized innovation analysis in an indefinite space.