Maximum Velocity vs. Chirp Cycle

Maximum velocity is limited by chirp cycle time; shorter cycles enable higher measurable speeds.

 

 

λ  wavelength of RF center frequency T_c  chirp duration

 

 

 

 

 

1. Doppler Sampling Relationship

The chirp cycle acts as the Doppler sampling interval.

If the sampling rate is too low, aliasing occurs, which limits the maximum measurable velocity.

 

 

 

 

 

 

2. Example

 

Parameter	Symbol	Value	Unit
Chirp Time	T_c	1,000	us
Chirp Start Freq.	f_chirp_start	24.05	GHz
Chirp Cutoff Freq.	f_chirp_stop	24.25	GHz

 

 

 

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