An Anti-Mainlobe Jamming Method Based on Minimum Power Output after Blocking Matrix

To address the high dependence of blocking matrix preprocessing (BMP) on the accuracy of mainlobe interference angle estimation, A method for countering high power mainlobe suppressed jamming based on minimum power output after blocking matrix is proposed. By analyzing the signal form after BMP and using the minimum output power as the optimization target, the optimal angle is sought through the steepest descent method. This angle is considered as an accurate estimated angle of mainlobe suppressed interference, achieving maximum suppression of mainlobe interference. Simulation experiments have demonstrated the effectiveness of this method.