Analysis and Mitigation of Phase Noise Effects in Linear Frequency Modulated Radar Systems

Phase noise presents a significant challenge in mod-ern radar systems, particularly those employing Linear frequency Modulation (LFM) waveforms. This paper presents a comprehensive analysis of phase noise effects on radar per-formance and evaluates various mitigation strategies. Through detailed simulation studies, we quantify the impact of phase noise levels ranging from 0 to 0.5 radians on Peak-to-Sidelobe Ra-tio (PSLR) performance. Results demonstrate significant PSLR degradation from −60.6 dB under ideal conditions to −32.7 dB under severe phase noise conditions. We implement and compare three mitigation techniques: window functions, phase compensation, and coherent integration. The coherent integration method proves most effective, achieving a 27.5 dB improvement in PSLR compared to uncompensated signals. Our analysis provides practical insights into phase noise mitigation strategies and their relative effectiveness, contributing to the development of more robust radar systems. The methodology and results presented offer valuable guidelines for radar system designers in selecting and implementing appropriate phase noise mitigation techniques based on specific performance requirements. Our analysis demonstrates a 27.5 dB improvement in PSLR compared to uncompensated signals, outperforming previous methods which achieved improvements of 15–20 dB