Range and Doppler FFT

1. Range FFT

This operation separates targets by propagation delay, 

enabling distance estimation with configurable FFT size, windowing, and range gating.

2. Doppler FFT

This processing enables target velocity estimation and discrimination between stationary and moving objects.

3. RD Map

By visualizing target range and velocity simultaneously in the 2D domain,

it enables intuitive identification and analysis of target position and motion characteristics.