2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/15712A simple technique for decoding an unknown modulated chaotic time-series is presented. We point out that, by fitting a polynomial model to the modulated chaotic signal, the error in the fit gives sufficient information to decode the modulating signal. For analog implementation, a lowpass filter can be used for fitting. This method is simple and easy to implement in hardware.a single dos zip file is uploaded. it contains the tex file and ps figuresChaotic Dynamicstext