Transforming raw time-domain IQ samples into range-velocity matrices using cascaded fast Fourier transforms with low sidelobe leakage.
Raw baseband samples undergo high-speed 1D-FFT across fast time to extract range bins, followed by a second 1D-FFT across slow time coherent pulses to extract Doppler velocity, yielding a high-density 2D Range-Doppler map at 100 fps.
Weak radar targets can be masked by spectral leakage from nearby high-RCS objects like trucks. ISACSense applies optimized Taylor windowing, suppressing range sidelobes by >35 dB while preserving 95% of peak mainlobe energy.