In order to solve the problems that the existing blind beam-forming method has complicated structure when using the cascade mode and the stability of the system is unsatisfactory when using the parallel mode, this paper uses the directional accumulation of energy based on the time-frequency analysis to obtain the one-dimensional linear distribution relationship between the intercept and the signal of the frequency axis. Then the uncertainty set of the steering vector is determined according to the second-order difference operation. Finally, the steering vector is accurately estimated by the second-order cone programming constraint. The multi-target, parallel output of blind beams is realized by the Capon beam-forming method. Theoretical analysis and experimental results show that the proposed method is less computationally intensive than the existing method, and can accurately estimate the steering vector and form a beam to receive the desired signal and to suppress the interference signal.