Analysis of LFM Signals Using Fractional Fourier Transform (FRFT)

The Linear Frequency Modulated (LFM) signal, as a typical non-stationary signal with large time-bandwidth product, is widely used in various information systems. From electronic warfare and electronic countermeasures perspectives, LFM signals are commonly employed to resolve the contradiction between operating range and range resolution while enhancing signal concealment. The detection and parameter estimation of LFM signals have become key research focuses in electronic warfare. This MATLAB implementation utilizes Fractional Fourier Transform (FRFT) for accurate LFM parameter estimation, featuring complete code examples with operational results demonstrating effective signal processing capabilities.