Zhanlue Zhao

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In tracking applications, target dynamics are usually modeled in the Cartesian coordinates, while target measurements are directly available in the original sensor coordinates. Measurement conversion is widely used such that the Kalman filter can be applied in the Cartesian coordinates. A number of improved measurement-conversion techniques have been(More)
—Multiple-model approach provides the state-of-the-art solutions to many problems involving estimation, filtering, control, and/or modeling. One of the most important problems in the application of the multiple-model approach is the design of the model set used in a multiple-model algorithm. To our knowledge, however, it has never been addressed(More)
Most estimators and filters provide assessments of their own estimation errors. Are these self-assessments trustable? What is the degree to which they are trustable? This paper provides practical answers to such questions, referred to as the (level of) credibility of the estimators/filters. It formulates the concept of credibility, proposes several(More)
– The most important problem in the application of the multiple-model approach is the design of the model set used. This paper deals with this challenging topic in a general setting, along with model-set choice and comparison. General and representative problems of model-set design, choice, and comparison are considered. Modeling of models as well as true(More)