Abstract: At present, the actual application of the DOA estimation algorithms includes maximum likelihood estimation, amplitude angle measurement, super-resolution angle measurement and etc. On the basis of an in depth analysis on these algorithms, this paper proposes a new angle estimation algorithm, which is called the correlation angle algorithm. Theoretical researches and simulation analyses show that the correlation angle algorithm is easier for engineering, more accurate than amplitude angle measurement and less complex in calculation than maximum likelihood estimation.in addition, compared with super resolution angle measurement, it is higher in the estimated value and smaller in the amount of calculation.