Velocity Resolution vs. Chirps per Frame

Velocity resolution is inversely proportional to the coherent observation time (frame time),

hence increasing frame rate degrades velocity resolution.

Increasing Vres

Increasing the number of chirps per frame improves velocity resolution without degrading the maximum unambiguous velocity,

as long as the chirp repetition interval (PRI/CRI) remains unchanged. However, it increases frame time and reduces update rate

Example

Parmeter	Value	32 Chirp/Frame	64 Chirp/Frame
Chirp Cycle	1,000us
Chirp Start Freq.	24.05 GHz
Chirp Cutoff Freq.	24.25 GHz