Title :
Enhancements to a multiple model adaptive estimator/image-tracker
Author :
Tobin, David M. ; Maybeck, Peter S.
Author_Institution :
Dept. of Electr. & Comput. Eng., US Air Force Inst. of Technol., Wright-Patterson AFB, OH, USA
fDate :
7/1/1988 12:00:00 AM
Abstract :
Three major enhancements to a previously devised multiple model adaptive estimator (MMAE) for target image tracking are developed and analyzed. These are: allowing some of the elemental filters to have rectangular fields of view and to be tuned for target dynamics that are harsher in one direction than others; considering both Gauss-Markov acceleration models and constant turn-rate models for target dynamics; and devising an initial target acquisition algorithm to remove important biases in the estimated target template to be used in a correlator within the tracker. Particularly good adaptation responsiveness is demonstrated in the multiple model algorithm´s ability to handle harsh maneuver onset, yielding performance essentially equivalent to that of the best artificially informed tracking algorithm
Keywords :
computerised pattern recognition; computerised picture processing; estimation theory; filtering and prediction theory; tracking systems; Gauss-Markov acceleration models; constant turn-rate models; filters; multiple model adaptive estimator; rectangular fields of view; target acquisition algorithm; target dynamics; target image tracking; Acceleration; Adaptive filters; Correlators; Filter bank; Gaussian processes; Image analysis; Shape measurement; Signal processing algorithms; Target tracking; Vehicle dynamics;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on