Part 6/9:
Velocity resolution hinges on the radar's ability to distinguish between targets moving at different speeds. This is achieved through the Doppler shift, where a moving target causes a frequency offset in the reflected signal.
Measuring Velocity
Radars typically emit multiple pulses in sequence. By analyzing the phase differences and frequency shifts across these pulses (via Fourier transforms), the radar can extract the velocity information.
The fundamental relation:
[ v = \frac{\Delta f \times \lambda}{2} ]
where:
(\Delta f) is the Doppler shift,
(\lambda) is the signal wavelength.