US 11,874,392 B2
Non-active chirp dithering in FMCW radar
Shankar Ram Narayana Moorthy, Bengaluru (IN); Karthik Subburaj, Bengaluru (IN); Shailesh Joshi, Bengaluru (IN); and Piyush Soni, Bengaluru (IN)
Assigned to Texas Instruments Incorporated, Dallas, TX (US)
Filed by Texas Instruments Incorporated, Dallas, TX (US)
Filed on Oct. 11, 2021, as Appl. No. 17/498,342.
Prior Publication US 2023/0017031 A1, Jan. 19, 2023
Int. Cl. G01S 7/28 (2006.01); G01S 7/35 (2006.01)
CPC G01S 7/2813 (2013.01) [G01S 7/352 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A non-transitory computer-readable storage device storing machine instructions which, when executed by one or more processors, cause the one or more processors to:
determine a chirp period Tc for radar chirps in a radar frame, wherein the chirp period Tc comprises a rising period Trise and a falling period Tfall;
determine, for each radar chirp in the radar frame, a corresponding randomized frequency characteristic during Tfall; and
cause a radar sensor circuit to generate the radar chirps in the radar frame based on Tc, Trise, Tfall, and the corresponding randomized frequency characteristics.