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Aircraft flight test telemetry vibration signal band gathered rich and complex composition, reasonable and effective interpretation information is crucial in the analysis of aircraft structure and its environmental characteristics include the frequency. Relying on empirical mode decomposition (EMD) method complex signal into quasi-single component signal, with the correlation coefficient pseudo component signal removed, ensure the validity of the decomposition of the signal. By combining EMD and WVD method, the quasi-single component of the signal remains were smoothed pseudo WVD transform and do treatment, thereby obtaining a complex signal frequency distribution. EMD-WVD combined model through the simulation test signal applications can be detected when the frequency characteristics of the signal itself. Its further application in the vibration signal telemetry, with smoothed pseudo WVD cross-term suppression methods are compared, the results show that EMD-WVD combination model more effective, when the project to reflect the complex - frequency distribution.