Patent ID: 11899095
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 12:
13. A system comprising:
a radar sensor module configured to generate range-gate data representing the position of an object within a region of interest; and
a signal processor configured to perform a Doppler Fast Fourier Transform (Doppler-FFT) on the range-gate data to provide Doppler-FFT data identify a velocity associated with a signal amplitude in the Doppler-FFT that exceeds a noise floor with respect to the Doppler-FFT data, determine a set of correction values, each associated with a return signal of a chirp in a frame of chirps, as, e
    
      
        4
        ⁢
        π
        ⁢
        
          
        
        ⁢
        
          jv
          1
        
        ⁢
        
          Δ
          n
        
      
      λ
    
  
  ,, where v1 is the velocity associated with the signal amplitude that exceeds the noise floor, Δn is the dither in the timing between the n−1th and the nth chirp in the frame, and λ is a wavelength associated with a carrier frequency of the transmitted chirp, and modify the range-gate data by applying phase rotations to the range-gate data based on the determined set of correction values to provide modified range-gate data.