Radar FFT processing

cancel
Showing results for 
Search instead for 
Did you mean: 

Radar FFT processing

495 Views
NXP Employee
NXP Employee

What is the number of points used to perform the range_FFT the doppler_FFT and the reason why you need this number of points

regards,

Olivier

0 Kudos
1 Reply

48 Views
NXP Employee
NXP Employee

Hi Olivier,

In the example shown Accelerate the Discrete Fourier Transform with NXP SPT  the number of points used for Range FFT is M=512 and for Doppler FFT is N=256, which means that one frame has N=256 chirps, and each chirp has M=512 samples.

In order to perform the FFT algorithm, the number of points (M and N) must be a power of 2. In general, the larger number the better the resolution.

Regards,

Iulian

0 Kudos