US 12,265,151 B2
Accurate and efficient electromagnetic response for a sensor simulator
Xiuzhang Cai, Carmel, IN (US); Bruno F. Camps Raga, Olathe, KS (US); Alexander Ioffe, Bonn (DE); and Mohannad Saifo, Wuppertal (DE)
Assigned to APTIV TECHNOLOGIES AG, Schaffhausen (CH)
Filed by Aptiv Technologies AG, Schaffhausen (CH)
Filed on Mar. 8, 2022, as Appl. No. 17/654,031.
Claims priority of provisional application 63/250,562, filed on Sep. 30, 2021.
Prior Publication US 2023/0102079 A1, Mar. 30, 2023
Int. Cl. G01S 13/931 (2020.01); G01S 7/40 (2006.01); G09B 9/54 (2006.01)
CPC G01S 13/931 (2013.01) [G01S 7/4052 (2013.01); G09B 9/54 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method comprising:
receiving target information for a target and sensor parameters for an electromagnetic sensor that are simulated in an environment with a ground plane;
determining, based on the target information and the sensor parameters, electromagnetic rays interacting with the target, the electromagnetic rays having forward propagation paths to the target and backward propagation paths from the target; and
modeling an electromagnetic response by approximating, based on determining the electromagnetic rays interacting with the target, electromagnetic energy reflected by the target alone or in combination with the ground plane,
wherein determining the electromagnetic rays interacting with the target comprises:
determining a target image for the target that mirrors the target about the ground plane;
determining an electromagnetic sensor image that mirrors the electromagnetic sensor about the ground plane;
launching initial electromagnetic rays from the electromagnetic sensor at the target and the target image, the initial electromagnetic rays having the same spatial ray density relative to the target and the target image;
performing ray tracing to determine reflected electromagnetic rays from the target and the target image; and
evaluating, based on equivalent surface currents, scattered fields of the reflected electromagnetic rays received by the electromagnetic sensor and the electromagnetic sensor image.