Granted Patent B2

US 12,292,528 · App. 17/823,288 · Granted May 6, 2025

Inventors: Jeroen Overdevest (Eindhoven, NL); Arie Geert Cornelis Koppelaar (Giessen, NL); Francesco Laghezza (Eindhoven, NL)

Assignee: NXP B.V.

G01S7/0232G01S7/354G01S7/356G01S13/584

Abstract

Claims (53)

1. A method of processing radar signaling, the method comprising:

receiving the radar signaling, wherein the radar signaling comprises a first matrix of data having a first dimension and a second dimension, wherein the first dimension represents a fast-time axis and the second dimension represents a slow-time axis;

receiving a mask that represents samples in the radar signaling that are detected as including interference, wherein the mask comprises a second matrix of data having the first dimension and the second dimension, wherein the first dimension represents the fast-time axis and the second dimension represents the slow-time axis;

applying the second matrix for the mask to the first matrix of the radar signaling in order to provide interference-reduced-radar-signaling, wherein the interference-reduced-radar-signaling comprises a third matrix of data having the first dimension and the second dimension, wherein the first dimension represents the fast-time axis and the second dimension represents the slow-time axis;

performing frequency analysis on the third matrix for the interference-reduced-radar-signaling across each of the fast-time axis and the slow-time axis in order to provide a range-Doppler map of the interference-reduced-radar signaling;

performing frequency analysis on the second matrix for the mask across each of the fast-time axis and the slow-time axis of the mask in order to provide a range-Doppler processed mask; and

deconvolving the range-Doppler map of the interference-reduced-radar-signaling using the range-Doppler processed mask in order to provide a deconvolved-range-Doppler map.

2. The method of claim 1 , wherein performing the frequency analysis on the second matrix for the mask across the fast-time axis results in a range-processed-mask that has a first dimension and a second dimension, wherein the first dimension represents a distance axis and the second dimension represents the slow-time axis.

3. The method of claim 2 , wherein performing the frequency analysis on the second matrix for the mask across the slow-time axis comprises performing the frequency analysis on the range-processed-mask for only a subset of the indices of the distance axis.

4. The method of claim 3 , wherein the size of the subset is set according to a design parameter.

5. The method of claim 3 , wherein the size of the subset is one, three or five indices of the distance axis.

6. The method of claim 1 , wherein performing the frequency analysis comprises the following steps, which can be performed in either order:

applying a Fourier transform across the fast-time axis; and

applying a Fourier transform across the slow-time axis.

7. The method of claim 6 , wherein performing the frequency analysis comprises:

applying a Fourier transform across the fast-time axis; and then

applying a Fourier transform across the slow-time axis.

8. The method of claim 1 , further comprising:

processing the second matrix for the mask to determine if there are at least a predetermined number of samples that include interference; and

only continuing to perform the steps of performing frequency analysis on the second matrix for the mask and deconvolving the range-Doppler map if there are at least a predetermined number of samples that include interference.

9. The method of claim 1 , further comprising:

processing the radar signaling to determine the second matrix for the mask.

10. The method of claim 1 , wherein the mask is a Fading-in Fading-out mask or a binary mask.

11. The method of claim 1 , wherein deconvolving the range-Doppler map comprises applying a one-dimensional or a two-dimensional deconvolution.

12. The method of claim 1 , wherein deconvolving the range-Doppler map comprises applying a spectral dimensional deconvolution.

13. A computer program configured to perform a method of processing radar signaling comprising:

receiving the radar signaling, wherein the radar signaling comprises a first matrix of data having a first dimension and a second dimension, wherein the first dimension represents a fast-time axis and the second dimension represents a slow-time axis;

receiving a mask that represents samples in the radar signaling that are detected as including interference, wherein the mask comprises a second matrix of data having the first dimension and the second dimension, wherein the first dimension represents the fast-time axis and the second dimension represents the slow-time axis;

applying the second matrix of the mask to the first matrix of the radar signaling in order to provide interference-reduced-radar-signaling, wherein the interference-reduced-radar-signaling comprises a third matrix of data having the first dimension and the second dimension, wherein the first dimension represents the fast-time axis and the second dimension represents the slow-time axis;

performing frequency analysis on the third matrix for the interference-reduced-radar-signaling across each of the fast-time axis and the slow-time axis in order to provide a range-Doppler map of the interference-reduced-radar signaling;

performing frequency analysis on the second matrix for the mask across each of the fast-time axis and the slow-time axis of the mask in order to provide a range-Doppler processed mask; and

deconvolving the range-Doppler map of the interference-reduced-radar-signaling using the range-Doppler processed mask in order to provide a deconvolved-range-Doppler map.

14. A processor configured to:

receive radar signaling, wherein the radar signaling comprises a first matrix of data having a first dimension and a second dimension, wherein the first dimension represents a fast-time axis and the second dimension represents a slow-time axis;

receive a mask that represents samples in the radar signaling that are detected as including interference, wherein the mask comprises a second matrix of data having the first dimension and the second dimension, wherein the first dimension represents the fast-time axis and the second dimension represents the slow-time axis;

apply the second matrix of the mask to the first matrix of the radar signaling in order to provide interference-reduced-radar-signaling, wherein the interference-reduced-radar-signaling comprises a third matrix of data having the first dimension and the second dimension, wherein the first dimension represents the fast-time axis and the second dimension represents the slow-time axis;

perform frequency analysis on the third matrix for the interference-reduced-radar-signaling across each of the fast-time axis and the slow-time axis in order to provide a range-Doppler map of the interference-reduced-radar signaling;

perform frequency analysis on the second matrix for the mask across each of the fast-time axis and the slow-time axis of the mask in order to provide a range-Doppler processed mask; and

deconvolve the range-Doppler map of the interference-reduced-radar-signaling using the range-Doppler processed mask in order to provide a deconvolved-range-Doppler map.

15. The processor of claim 14 , wherein the processor is further configured to perform the frequency analysis on the second matrix for the mask across the fast-time axis which results in a range-processed-mask that has a first dimension and a second dimension, wherein the first dimension represents a distance axis and the second dimension represents the slow-time axis.

16. The processor of claim 15 , wherein the processor is further configured to perform the frequency analysis on the second matrix for the mask across the slow-time axis by performing the frequency analysis on the range-processed-mask for only a subset of the indices of the distance axis.

17. The processor of claim 14 , wherein the processor is further configured to perform the frequency analysis by applying a Fourier transform across the fast-time axis and applying a Fourier transform across the slow-time axis.

18. The processor of claim 14 , wherein the processor is further configured to:

process the second matrix for the mask to determine if there are at least a predetermined number of samples that include interference; and

perform frequency analysis on the second matrix for the mask and deconvolve the range-Doppler map if there is at least a predetermined number of samples that include interference.

19. The method of claim 10 , wherein:

in the third matrix for the interference-reduced-radar-signaling, samples that are detected as including interference have reduced amplitudes compared with corresponding samples in the first matrix for the radar signaling;

the mask is the binary mask; and

the reduced amplitudes are zero for all of the samples in the radar signaling that are detected as including interference.

20. The method of claim 10 , wherein:

in the third matrix for the interference-reduced-radar-signaling, samples that are detected as including interference have reduced amplitudes compared with corresponding samples in the first matrix for the radar signaling;

the mask is the Fading-in Fading-out mask; and

the reduced amplitudes are greater than zero for at least some of the samples in the radar signaling that are detected as including interference.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (12)