量测系统的能观度和状态估计精度
Degree of Observability and Accurcy of State Estimate for General Measurement System
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摘要: 本文将控制理论的能观度概念运用到姿态估计的精度分析,建立了能观度和精度之间的 解析关系,指出能观度可作为比较量测模型优劣的数字特征,解决了量测模型的选择问题. 此外,本文将文献[1]中有关冗余量测系统优点的结论,从姿态确定系统推广到一般量测 系统,为实际设计中运用冗余量测信息,构造最好的量测模型提供了理论依据.Abstract: In this paper the concept of degree of observability in modern control theory is applied to the ananlysis of attitude determination accuracy. The analytical relationship between accuracy and degree of observability of a measurement system has been found and it is shown that the degree of observahility can be used as mathematical features for selecting the best measurement model. In addition, the results about redundant measurement model have been extended to general measurement system and provide theoretical basis for constructing the best measurement model in practical design.
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