Four-Channel Mainlobe Interference Suppression Technology of Adaptive Monopulse

The adaptive monopulse technology is a common method for phased array radar to achieve target detection and angle estimation. In order to solve the problem of interference suppression under the condition of mainlobe interference, the four-channel adaptive mainlobe interference cancellation technology was studied. By constructing a two-dimensional four-channel array model, the principle of interference cancellation is analyzed. The performance of the algorithm against interference is evaluated by calculating the signal-to-noise ratio loss of target signals, and the loss of signal-to-noise ratio before and after adaptive processing is derived, clarifying the impact of interference angle on the effectiveness of interference suppression.