Analytic systems on an arbitrary time-scale are studied. As particular cases they include continuous-time and discrete-time systems. Several local observability properties are considered. They are characterized in a unified way using the language of real analytic geometry, ideals of germs of analytic functions, and their real radicals. It is shown that some properties related to observability are preserved under various discretizations of continuous-time systems.
"Local Observability of Systems on Time Scales." Abstr. Appl. Anal. 2013 (SI25) 1 - 9, 2013. https://doi.org/10.1155/2013/810625