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Acta Aeronautica et Astronautica Sinica ›› 2025, Vol. 46 ›› Issue (4): 330883.doi: 10.7527/S1000-6893.2024.30883

• Electronics and Electrical Engineering and Control • Previous Articles    

Trajectory classification and anomaly detection based on stochastic depth ResNet

Ge SONG(), Pengfei HAN, Yuxiang LUO, Weijun PAN   

  1. College of Air Traffic Management,Civil Aviation Flight University of China,Guanghan 210016,China
  • Received:2024-07-01 Revised:2024-08-14 Accepted:2024-10-08 Online:2024-10-30 Published:2024-10-23
  • Contact: Ge SONG E-mail:songge@cafuc.edu.cn
  • Supported by:
    National Natural Science Foundation of China(U2333209);Civil Aviation Administration of China Safety Capacity Building Fund(MHAQ2022008)

Abstract:

In traditional trajectory similarity research, clustering algorithms have the problems of indistinct trajectory identification results, imprecise clustering, and larger time cost under the condition of high-dimensional data, especially under the condition of complex trajectory. To address these issues, we present a trajectory classification and anomaly detection model based on the improved stochastic depth network. Firstly, we optimize the attention mechanism Squeezed-and-Excitation (SE) module and Global Average Pool (GAP) module based on the ResNet model, and construct a trajectory classification network model. Secondly, in the data processing stage, the continuous spatiotemporal trajectory model is used to convert the discrete trajectory data into continuous data of the trajectory function of time for graph neural network processing. Then, nominal trajectory data is introduced into the training set to realize trajectory classification, with nominal trajectories as the reference. Finally, an improved twin neural network is developed based on the trajectory classification results, and is utilized for abnormal trajectory detection. Comprehensive experiments show that the proposed algorithm can efficiently complete the task of track classification according to nominal trajectories and detect abnormal trajectories accurately, compared with traditional track clustering algorithms.

Key words: trajectory similarity, trajectory classification, stochastic depth ResNet, anomaly detection, civil aviation

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