MATLAB Simulation Implementation of Radar Linear Frequency Modulation (LFM) Signal

This MATLAB simulation implements radar linear frequency modulation (LFM) signals and displays their time-domain plots, amplitude-frequency characteristics, and phase-frequency diagrams. The implementation uses MATLAB's signal processing toolbox to generate chirp signals with linearly varying frequency over time, typically achieved through the 'chirp' function with specified initial frequency, frequency sweep rate, and time duration. The simulation includes spectrum analysis using FFT (Fast Fourier Transform) to examine the signal's spectral properties and evaluate modulation effectiveness. Additional signal processing techniques are incorporated, such as applying window functions (e.g., Hamming, Hanning) to reduce spectral leakage and implementing digital filters to enhance signal quality and performance. The code structure allows for parameter adjustments including bandwidth, pulse width, and sampling frequency to analyze different LFM signal characteristics. Key MATLAB functions employed in this implementation include: - chirp(): generates linear FM signals - fft(): performs frequency domain analysis - plot(): visualizes time-domain and frequency-domain characteristics - window functions (hamming(), hanning()): for spectral shaping - filter design functions (fir1(), butter()): for signal optimization