Anti‐interrupted sampling repeater jamming method for random pulse repetition interval and intra‐pulse frequency agile radar

Abstract Interrupted sampling repeater jamming can produce numerous active false targets with high fidelity, which is a significant challenge for coherent pulse radar. This poses threat to the effectiveness of anti‐jamming technology, such as time‐frequency analysis and frequency agility conventional constant repetition interval (PRI) radar, will render radar inoperable detect track actual target. A random PRI intra‐pulse agile waveform low interception properties proposed, effectively restrict acquisition parameters by jammer, destroy coherence signals, capture range‐dimensional centroid feature echo. Accordingly, identification method based on scale constrained Gaussian mixture model an entity target energe recovery algorithm neighbourhood weighted maximum entropy are proposed detection. Theoretical simulation experiments demonstrate proposal.