The Improvement of Time-Frequency Distribution Series Method

The time-frequency distribution series(TFDS) has been tested effective in the balance of the cross-term suppression and the time-frequency resolution. It is promising in the application of the target recognition. But the computational load is too large to bear with the length of the signal increasing. By getting ride of the redundant computing about the time-frequency atom, we overcome the difficulty. The simulation of the multi-component non-stational signal shows that the improvement of the TFDS method accelerates the computing. It can be consulted under the use of the real-time processing of the time-frequency characteristic of the target echo.