The Static Case

  • Torsten Söderström
Part of the Communications and Control Engineering book series (CCE)


This chapter presents the EIV problem for static systems. Quite some details are given for a simple line-fitting problem, which yet captures the key properties of many more advanced EIV problems. It is shown that without specific assumptions there is no unique solution to the EIV problem, and thus the system is then not identifiable. Further, it is discussed under what additional conditions identifiability prevails. The methodology provided by the factor analysis modeling and by the Frisch scheme are also described.

Supplementary material

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© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Division of Systems and Control, Department of Information TechnologyUppsala UniversityUppsalaSweden

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