United Frequency and DOA Estimation Algorithm Based on Compressed Sensing
Shen Zhib · Acta Aeronautica Et Astronautica Sinica · 2014
The direction-of-arrival(DOA)estimation is an important issue in array signal processing.For this purpose,a new united frequency and DOA estimation algorithm based on compressed sensing is proposed in this paper.First,an overcomplete sparse dictionary is established using the sparseness of the direction-of-wave number space and then with the compressive sampling array architecture,a high resolution direction-of-wave number estimation is achieved.Finally,the spatial filtering method is used to make a match of the direction-of-wave number with its frequency.Compared with the traditional methods,the proposed method reduces computational complexity by compressive sampling and realizes high resolution DOA estimation of multiple signals.The simulation results verify the effectiveness and feasibility of the method.