2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/170119This paper describes a method to filter oscillatory transients from measurements of a time series which were at least an order of magnitude larger than the signal to be measured. Based on a Kalman filter, it has an optimality property and a natural scaling parameter that allows to tune it to high resolution or low noise.12 pages, 9 figuresOptimization and Control93E11text