Track breakage is a common issue in a multiple ballistic target tracking scenario with high speeds, high densities and large measurement errors. How to improve the track continuity by associating the break track segments without any prior information is therefore a focus of research efforts. This paper proposes a real-time discrete optimal association algorithm which uses the velocity information to realize coarse association for extrapolation between the break track segments and improves the association probability by calculating the association cost function of trajectory segments using log-likelihood function and by adopting auction algorithm to realize 2D optimal assignment and fine association. Furthermore, the algorithm uses "Window" statistics method to calculate the minimum error in order to optimize the track continuity. Simulation results show that the proposed algorithm doubles the mean track life and yields significant improvements in position and speed root mean square RMS errors during the track breakage.
YU Jianguo, LIU Mei, CHEN Jinhai
. Ballistic Target Track Segments Association and Optimization[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2011
, 32(10)
: 1897
-1904
.
DOI: CNKI:11-1929/V.20110627.1733.001
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