Vertaile menetelmiä

	Ensemble Kalman Filter (EnKF)	Datan fuusio
Tieteenala	Datafuusio	Datafuusio
Menetelmäperhe	Regression model	Process / pipeline
Syntyvuosi	1994	1997
Kehittäjä	Geir Evensen	David Hall & James Llinas
Tyyppi	Sequential Monte Carlo data assimilation filter	Multi-level information integration pipeline
Alkuperäislähde	Evensen, G. (1994). Sequential data assimilation with a nonlinear quasi-geostrophic model using Monte Carlo methods to forecast error statistics. Journal of Geophysical Research, 99(C5), 10143–10162.	Hall, D. L., & Llinas, J. (1997). An introduction to multisensor data fusion. Proceedings of the IEEE, 85(1), 6–23.
Rinnakkaisnimet	EnKF, Monte Carlo Kalman Filter, Stochastic Ensemble Filter, Topluluk Kalman Filtresi	Sensor Data Fusion, Information Fusion, Multi-source Data Fusion, Veri Füzyonu
Liittyvät	3	3
Tiivistelmä	The Ensemble Kalman Filter (EnKF) is a sequential Monte Carlo data assimilation algorithm introduced by Geir Evensen in 1994. It extends the classical Kalman filter to high-dimensional, nonlinear dynamical systems by representing the forecast error covariance through a finite ensemble of model realizations rather than propagating a full covariance matrix. Each ensemble member evolves through the nonlinear model, and observations are assimilated by computing a sample-based Kalman gain, making the method computationally tractable for large geophysical models.	Data fusion is a multi-level process that combines data and information from multiple sensors and sources to achieve improved accuracy, completeness, and confidence in estimates that cannot be obtained from any single source alone. Formally introduced as the Joint Directors of Laboratories (JDL) model by Hall and Llinas in 1997, the framework organizes fusion into hierarchical processing levels ranging from raw signal combination to higher-order situation and threat assessment.