Abstract
To overcome high computational complexity and imprecise target estimates in existing multitarget tracking (MMT), a multiple-model Rao-Blackwellized particle cardinalized probability hypothesis density (CPHD) filter is presented in this paper. First, we derive the multiple-model CPHD filter to model maneuvering multitarget with uncertainties of each individual state and then make full use of the Rao-Blackwellization to divide the target state space into the nonlinear and linear parts to reduce space dimension. Furthermore, the nonlinear state is estimated by the particle filter with the sequential Monte Carlo method, and the linear part is predicted by the Kalman filter with the information embedded in the estimated nonlinear state. With respect to the tracking precision, we find that the proposed filter has small Wasserstein distance by eliminating unstable target number-estimates. Especially, the computational cost is significantly reduced due to the saved particles. Finally, the illustrative numerical studies are provided to demonstrate the tracking performance of the proposed filter is superior.
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Acknowledgments
This work was supported by the Subject of Electronics and Information Engineering College in Liaoning University of Technology (DX201416), and Natural Science Foundation of China (61104017, 61473139). The authors thank the reviewers for their valuable comments and suggestions which helped to improve the quality and presentation of this paper.
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Li, B. Multiple-model Rao-Blackwellized particle CPHD filter for multitarget tracking. Nonlinear Dyn 79, 2133–2143 (2015). https://doi.org/10.1007/s11071-014-1799-x
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DOI: https://doi.org/10.1007/s11071-014-1799-x