Abstract:

Model-set is utilized in state estimation for maneuver-
ing target tracking.Two minimal symmetric model-subsets are
designed and investigated by moment matching method,which
include hypersphere-symmetric model-subset and axis-symmetric
model-subset,if system mode is a random variable and obeys
certain probability distribution.They can be used as the fun-
damental model-subset for multiple models estimation with fixed
structure,variable structure and moving bank.The model-groups
constructed by above designed subsets are given,which give the
practical guidance for use of model-set in multiple models ap-
proach with a variable structure.Simulation results show that the
performances of two minimal model-set significantly outperform
the corresponding model-sets with fixed spacing.