Systems Engineering and Electronics ›› 2020, Vol. 42 ›› Issue (4): 806-812.doi: 10.3969/j.issn.1001-506X.2020.04.10

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Nearest neighbor data association algorithm based on information entropy weight

Henglu LI(), Baixiao CHEN(), Yi DING(), Zhaoming ZHANG()   

  1. National Laboratory of Radar Signal Processing, Xidian University, Xi'an 710071, China
  • Received:2019-07-31 Online:2020-03-28 Published:2020-03-28
  • Supported by:
    国家自然科学基金(61971323)

Abstract:

The radar data association algorithm in the complex environment is one of the most difficult problems in the field of multi-target tracking. Among them, the nearest neighbor algorithm is an effective data association algorithm with small computation and easy application. However, there is a problem that the data association accuracy is not high, the filtering result is not accurate enough, and the multi-target tracking is easy to cause error correlation. In order to improve the data association effect of the algorithm, a nearest neighbor data association algorithm is proposed. By further deepening the entropy of known measurement information, the entropy weight method is used to analyze and determine the weights of the respective measurement indicators. The weight is optimized for the statistical distance association criterion of the nearest neighbor algorithm, thereby improving the problem of the original algorithm in single target tracking. The simulation results show that the improved algorithm proposed has higher data association accuracy, smaller tracking error and faster convergence than the original algorithm.

Key words: data association, information entropy, nearest neighbor, entropy weight, statistical distance

CLC Number: 

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