Synchronization and control of coupled Ginzburg-Landau equations using local coupling

In this paper we discuss the properties of a recently introduced coupling s cheme for spatially extended systems based on local spatially averaged coup ling signals [see Z. Tasev et al., Int. J. Bifurcation Chaos Appl. Sci. Eng . (to he published); and L. Junge er al., Int. J. Bifurcation Chaos Appl. S ci. Eng. 9, 2265 (1999)]. Using the Ginzburg-Landau model, we performed an extensive numerical examination of this coupling scheme, i.e., a complete s can through the relevant coupling parameters. Furthermore, we demonstrate s uppression and control of spatiotemporal chaos, e.g., stabilizing the homog eneous steady state and spatially localized control. As an application all model parameters of the Ginzburg-Landau equation rue estimated given only t he local information of the system.