A blind sub-carrier recognition algorithm of TT&C(telemetry,tracking and command) communication is proposed based on the wavelet analysis in terms of recognition of TT&C signals for military TT&C communication information scout.First,the proposed algorithm denoises the mixed-signals based on the theory of wavelet multi-resolution analysis.And then zero-partition is put forward to make sure the number of sub-carriers.Finally,the adaptive threshold identification algorithm is designed to identify the frequenc...