Guchong Li

Guchong Li, Giorgio Battistelli, Wei Yi et al.

Distributed multi-target tracking (DMTT) is addressed for sensors having different fields of view (FoVs). The proposed approach is based on the idea of fusing the posterior Probability Hypotheses Densities (PHDs) generated by the sensors on the basis of the local measurements. An efficient and robust distributed fusion algorithm combining the Generalized Covariance Intersection (GCI) rule with a suitable Clustering Algorithm (CA) is proposed. The CA is used to decompose each posterior PHD into well-separated components (clusters). For the commonly detected targets, an efficient parallelized GCI fusion strategy is proposed and analyzed in terms of $L_1$ error. For the remaining targets, a suitable compensation strategy is adopted so as to counteract the GCI sensitivity to independent detections while reducing the occurrence of false targets. Detailed implementation steps using a Gaussian Mixture (GM) representation of the PHDs are provided. Numerical experiments clearly confirms the effectiveness of the proposed CA-GCI fusion algorithm.

Guchong Li

The Poisson multi-Bernoulli mixture (PMBM) filter is conjugate prior composed of the union of a Poisson point process (PPP) and a multi-Bernoulli mixture (MBM). In this paper, a new PMBM filter for tracking multiple targets with randomly time-varying dynamics under multiple model (MM) is considered. The proposed MM-PMBM filter uses extends the single-model PMBM filter recursion to multiple motion models by using the jump Markov system (JMS). The performance of the proposed algorithm is examined and compared with the MM-MB filter. The simulation results demonstrate that the proposed MM-PMBM filter outperforms the MM-MB filter in terms of the tracking accuracy, including the target states and cardinality, especially for the scenerio with low detection probability. Moreover, the comparisons for the variations of detection probability and standard derivation of measurement noise are also tested via simulation experiments.