The definition of parameter estimability is proposed for parameter estimation problem with finite measurement information based on the definition of system estimability.
基于系统可估计性定义，本文根据有限测量信息的参数估计问题特点，提出了系统的参数可估计性定义；
2
The relationship between parameter estimability and the number of data sets is discussed. The effectiveness of the proposed analysis can be demonstrated by the results of linear and nonlinear systems.