# Local observability of state variables and parameters in nonlinear modeling quantified by delay reconstruction

### Abstract

Features of the Jacobian matrix of the delay coordinates map are exploited for quantifying the robustness and reliability of state and parameter estimations for a given dynamical model using a measured time series. Relevant concepts of this approach are introduced and illustrated for discrete and continuous time systems employing a filtered Henon map and a Rossler system.

Publication
Chaos 24: 024411-01–024411-11