Systems Engineering and Electronics ›› 2020, Vol. 42 ›› Issue (9): 1920-1926.doi: 10.3969/j.issn.1001-506X.2020.09.06

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Similarity analysis of motion trajectory of communication transmitter

Yufan JI(), Lunwen WANG(), Mengbo ZHANG()   

  1. College of Electronic Engineering, National University of Defense Technology, Hefei 230037, China
  • Received:2019-09-11 Online:2020-08-26 Published:2020-08-26

Abstract:

Aiming at the problem of the inefficiency of spatio-temporal information in traditional trajectory similarity analysis, combined with the main characteristic of communication transmitter, an algorithm of transmitter trajectory similarity analysis based on spatio-temporal and semantic information is proposed. In this algorithm, the distance measurement of similar motion trajectory is improved, and a trajectory spatio-temporal similarity algorithm based on Mahalanobis distance is proposed, which computes the similarity after trajectory segmentation, overcomes the influence of time mismatch trajectory and different sampling intervals on trajectory similarity judgment. At the same time, combined the semantic similarity data search algorithm based on efficient K-nearest neighbor (KNN) similarity search, accurate judgment of the similar trajectory of the transmitter is realized. The algorithm can judge the similar trajectory accurately, which is superior to the existing similar trajectory judgment methods, and adapts to the noise environment. The simulation experiment results verify the performance of the algorithm.

Key words: communication transmitter trajectory, spatio-temporal information, semantic information, simi-larity, similarity search

CLC Number: 

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