03. FFT Operation

FFT Operation

  • Implement the 1D FFT on the Mixed Signal
  • Reshape the vector into Nr*Nd array.
  • Run the FFT on the beat signal along the range bins dimension (Nr)
  • Normalize the FFT output.
  • Take the absolute value of that output.
  • Keep one half of the signal
  • Plot the output
  • There should be a peak at the initial position of the target

The 1st FFT output for the target located at 110 meters

The 1st FFT output for the target located at 110 meters

The 2nd FFT is already implemented in the code. It will generate a Range Doppler Map as seen in the image below and it will be given by variable ‘RDM’. Next task is to implement the CFAR on this Range Doppler Map.

2D FFT output - Range Doppler Map

2D FFT output - Range Doppler Map