US 11,668,790 B2
Radar communications with oversampling
Ryan Haoyun Wu, San Jose, CA (US); Dongyin Ren, East Brunswick, NJ (US); Michael Andreas Staudenmaier, Munich (DE); and Maik Brett, Taufkirchen (DE)
Assigned to NXP B.V., Eindhoven (NL)
Filed by NXP B.V., Eindhoven (NL)
Filed on May 25, 2021, as Appl. No. 17/329,470.
Prior Publication US 2022/0390555 A1, Dec. 8, 2022
Int. Cl. G01S 7/35 (2006.01); G01S 7/41 (2006.01); G01S 13/34 (2006.01); G01S 13/50 (2006.01)
CPC G01S 7/356 (2021.05) [G01S 7/411 (2013.01); G01S 13/347 (2013.01); G01S 13/505 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An apparatus comprising:
receiver circuitry to receive and sample radar signal reflections as reflected from a target; and
processing circuitry to:
transform representations of the reflections into a fast-time domain, the representations comprising a plurality of length-N sample vectors;
convert a sample vector of the plurality of length-N sample vectors into a spectral domain by using a fast Fourier transform (FFT);
oversample the transformed representations of the reflections by computing branches of length-N complex-weighted inverse FFTs (IFFTs);
select a subset of the oversampled representations that are nearest to a predefined index, relative to other representations of the oversampled representations;
arrange the subset of the oversampled representations into an output sample vector;
and
ascertain positional characteristics of the target by constructing a range response characterizing the target based on at least the output sample vector.