In order to fasten and improve the bearing estimation method for wideband Linear Frequency Modulated(LFM)sources by exploiting the temporal information of this kind of signals

a new direction finding method based on the product of the array output with its temporally delayed version is proposed.The new method succeeded to estimate the direction-of-arrival(DOA)of the incident wideband LFM signals via narrowband subspace-based method

and exceeded normal wideband direction finding methods in computational efficiency and applicable inter-element spacing.Sufficient numerical examples are carried out to demonstrate the dominance of the novel method over normal wideband Coherent Signal-Subspace Method(CSM)in performance.