Frequency Modulated Continuous Wave Radar Implementation

This code implements a Frequency Modulated Continuous Wave (FMCW) radar system. The implementation utilizes frequency modulation techniques to transmit continuous wave signals and processes received echo data to extract target information. The code structure begins with defining critical parameters including frequency sweep bandwidth, chirp duration, sampling rate, and radar system constants. A main control loop manages the radar's operational cycle, where each iteration transmits a linearly frequency-modulated chirp signal with specific frequency characteristics and awaits echo reception. The signal processing phase involves key operations such as mixing the transmitted and received signals to generate intermediate frequency (IF) signals, followed by Fast Fourier Transform (FFT) analysis for range estimation. Advanced processing includes Doppler processing through multiple chirps for velocity calculation and constant false alarm rate (CFAR) detection for target identification. The algorithm extracts target parameters including distance, velocity, and angle information through phase analysis and digital beamforming techniques. Results are either displayed through console output or stored in data structures for further analysis. This implementation follows fundamental FMCW radar principles and signal processing algorithms, serving as an educational reference for radar system development and digital signal processing applications. The code demonstrates practical implementation of radar equations, signal modulation techniques, and digital signal processing workflows.