Accession Number : ADA255832


Title :   Fixed-Gain, Two-Stage Estimators for Tracking Maneuvering Targets


Descriptive Note : Final rept.


Corporate Author : NAVAL SURFACE WARFARE CENTER DAHLGREN DIV VA


Personal Author(s) : Blair, W D


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a255832.pdf


Report Date : Jul 1992


Pagination or Media Count : 68


Abstract : The two-stage Alpha-Beta-Gamma estimator is proposed as an alternative to adaptive gain versions of the Alpha-Beta and Alpha-Beta-Gamma filters for tracking maneuvering targets. This report accomplishes fixed-gain, variable dimension filtering with a two-stage Alpha-Beta-Gamma estimator. The two-stage Alpha-Beta-Gamma estimator is derived from the two-stage Kalman estimator, and the noise variance and reduction matrix and steady-state error covariance matrix are given as a function of the steady-state gains. A procedure for filter parameter selection is also given along with a technique for maneuver response and a gain scheduling technique for initialization. The kinematic constraint for constant speed targets is also incorporated into the two-stage estimator to form the two-stage Alpha-Beta-Gamma-Lambda estimator. Simulation results are given for a comparison of the performances of estimators with that of the Alpha-Beta-Gamma filter.


Descriptors :   *TRACKING , *TARGETS , *ESTIMATES , *FILTERS , KINEMATICS , FUNCTIONS , REDUCTION , SCHEDULING , CONSTANTS , GAIN , FILTRATION , SELECTION , NOISE , COVARIANCE , MANEUVERS , ERRORS , RESPONSE , VARIABLES , SIMULATION , STEADY STATE , PARAMETERS , COMPARISON


Subject Categories : Numerical Mathematics


Distribution Statement : APPROVED FOR PUBLIC RELEASE