“…Usually the problem is formulated as a joint estimation of kinematic states and parameters, where the parameters relate to the extent of the object of interest [1], [2], [3], [4], [5], [6], [7] and the main methodology is the Bayesian framework. Various filters have been developed for extended target tracking: particle track-before-detect filters [8], cluster based approaches [9], [10], Poisson spatial models combined with particle filters (PFs) [11], [12], [13], [14] and mixture Kalman filters combined with data augmentation [1].…”