Stepped Frequency Lfm Radar Signal Modulation Based on Periodic-Coded Interrupted Sampling

This paper proposes a periodic cyclic coding-based interrupted sampling modulation method, providing a novel technical approach for flexible modulation and multi-target simulation of Stepped-Frequency Linear Frequency Modulation (SF-LFM) signals. This approach employs periodic cyclic coding sequences to regulate the interrupted sampling and forwarding processes of sub-pulses, through which controllable timefrequency modulation characteristics are systematically introduced into synthesized wideband signals. The modulated signals are thereby enabled to generate non-uniformly distributed, high-density false characteristics in their modulation patterns, achieved through precisely controlled temporal and spectral manipulations. The effectiveness of the proposed method is validated through simulation experiments.