To solve the problem of frequency trait and direction-of-arrival (DOA) simultaneous estimation of linear frequency modulated (LFM) signal under impulse noise, and according to the FLOM-Time Frequency Distribution (TFD) theory and spectrum reassigned method, a new algorithm of Frequency Trait and DOA Simultaneous Estimation is brought forward based on the reassigned FLOM-Time Frequency Distribution (TFD). This algorithm can be applied in impulse noise environment, while the conventional Time Frequency Distribution DOA estimation methods can not. And the algorithm can be used to depress the influence of TFD cross-terms and is good in time - frequency collection. In using this algorithm, the LFM instantaneous frequency and DOA value can be obtained by frequency fitting and Time Frequency Average -MUSIC method. Compared with the similar DOA algorithms in existence, this algorithm is more accurate in estimation results. Simulation results show that the algorithm is effective.