Based on the multiple signal classification (MUSIC), the analysis of cylindrical digital array antennas is carried out. The angle measurement tracking algorithm based on MUSIC algorithm and the beam pointing algorithm based on linear constrained minimum variance (LCMV) are proposed, and the method of combining the two algorithms is proposed. The influence of channel error on the accuracy of MUSIC and LCMV algorithms is analyzed. The results show that the method provides a theoretical basis for the engineering development of cylindrical conformal digital array antenna for high-speed aircraft.