US 12,189,052 B2
Processing radar signals
Andre Roger, Munich (DE); Simon Achatz, Munich (DE); Dian Tresna Nugraha, Bandung (ID); Ljudmil Anastasov, Munich (DE); Markus Bichl, Feldkirchen-Westerham (DE); Mayeul Jeannin, Munich (DE); and Farhan Bin Khalid, Munich (DE)
Assigned to Infineon Technologies AG, Neubiberg (DE)
Filed by Infineon Technologies AG, Neubiberg (DE)
Filed on May 19, 2021, as Appl. No. 17/324,487.
Claims priority of application No. 102020113678.1 (DE), filed on May 20, 2020; application No. 102020115709.6 (DE), filed on Jun. 15, 2020; and application No. 102020004411.5 (DE), filed on Jul. 22, 2020.
Prior Publication US 2021/0364622 A1, Nov. 25, 2021
Int. Cl. G01S 7/35 (2006.01); G01S 7/288 (2006.01); G01S 13/44 (2006.01); G01S 13/536 (2006.01); G01S 13/58 (2006.01); G01S 13/931 (2020.01)
CPC G01S 7/354 (2013.01) [G01S 7/2883 (2021.05); G01S 7/356 (2021.05); G01S 13/4436 (2013.01); G01S 13/536 (2013.01); G01S 13/584 (2013.01); G01S 13/931 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A radar device configured to process radar signals, comprising:
a signal processing circuit configured to receive radar signals and perform processing thereon to form a digitized antenna data set;
one or more fast fourier transform (FFT) processor circuits configured to receive and process the digitized antenna data set and output interim results that comprise a portion of processed received radar signals that signifies a peak or peak structure indicative of one or more detected objects;
an electronic control circuit configured to receive the interim results and generate an error compensation vector based on a comparison of the interim results and one or more ideal radar characteristics;
wherein the electronic control circuit is further configured to:
receive a radar parameter from the signal processing circuit or other external device and calculate a variation between the radar parameter and a corresponding radar parameter from a specification or other corresponding predetermined radar parameter;
determine an estimated value of the radar parameter from the generated error compensation vector, wherein the estimated value corresponds to a radar parameter value that would result in the error compensation vector;
determine a safety condition based on a comparison of the calculated variation and the determined estimated value for the respective radar parameter; and
selectively apply the generated error compensation vector to the interim results based on the determined safety condition.