Study of Specific Emitter Identification for ATC Transponder
Lei Wang · Electronic Information Warfare Technology · 2012
By analyzing the signal pattern and characteristic of ATC transponder, an individual identification algorithm for ATC transponder is proposed,based on the feature named EMD time-frequency redistribution.First,the multi-component signal is decomposed into some IMF components by EMD,and then these IMFs are used to reconstruct the time-frequency distribution of this signal,finally the stable time-frequency decomposition feature is obtained.An experiment used the real ATC signals is employed,and the result shows that,the ATC signal's fine-features could be extracted efficiently by the method proposed,and its identification accuracy is better than that of the algorithm using the pulse envelope feature or the power spectrum feature.