Abstract: In order to ensure safety operation of air traffic, based on four diagnostic methods of traditional Chinese medicine, diagnostic index system of safety operation state for ATC position was constructed from four aspects of observation, auscultation and olfaction, inquiry, pulse feeling and palpation. Combining combination weighting method, set pair analysis and BP neural network, a combination diagnosis method with self-learning ability was proposed. Firstly, weight required by set pair analysis was obtained by combination weighting method. Secondly, operation state of ATC position in each sample was obtained by set pair analysis. Finally, BP neural network was trained and tested based on samples, and operation state diagnosis the model was obtained. The results show that the model is simple and easy to use, and diagnosis results are accurate, and it has advantages of combining qualitative and quantitative.

Key words: air traffic control(ATC) position, four diagnostic methods, diagnosis of safety operation state, set pair analysis, BP neural network, combination weighting method