Monopulse Ratio-Based Mainlobe Target Detection and Validation in Pulse-Doppler Radar

Monopulse techniques are widely employed in pulse-doppler radars to achieve reliable target detection in complex electromagnetic environments. However, conventional methods are vulnerable to sidelobe interference, which leads to false alarms and degraded performance. Although various approaches have been proposed, these often suffer from increased system complexity and implementation costs. In this study, we propose a mainlobe target detection method that utilizes the angular characteristics of the monopulse ratio to suppress sidelobe targets without auxiliary antennas. The proposed method involves a simple structure and low computational complexity, while ensuring reliable detection. The flight test results demonstrate the effectiveness of the proposed method in detecting mainlobe targets and verify its applicability in practical operational environments.