公开(公告)号：US20220404486A1

公开(公告)日：2022-12-22

申请号：US17843322

申请日：2022-06-17

Applicant: Infineon Technologies AG

Inventor： Raghavendran Vagarappan Ulaganathan ,  Andrea Heinz ,  Avik Santra

IPC: G01S13/89

Abstract: In an embodiment, a method includes: obtaining one or more radar measurement frames, each one of the one or more radar measurement frames including respective data samples acquired by a radar sensor monitoring a scene; for each one of the one or more radar measurement frames, determining a respective 2-D angular intensity map of the scene based on the respective radar measurement frame; and performing a people counting operation based on the one or more 2-D angular intensity maps determined for the one or more radar measurement frames to determine a people count for the scene.

公开(公告)号：US11360185B2

公开(公告)日：2022-06-14

申请号：US16584404

申请日：2019-09-26

Applicant: Infineon Technologies AG

Inventor： Reinhard-Wolfgang Jungmaier ,  Christoph Rumpler ,  Avik Santra ,  Saverio Trotta ,  Raghavendran Vagarappan Ulaganathan

IPC: G01S7/02 ,  G01S7/35 ,  G01S13/32 ,  G01S13/34

Abstract: In an embodiment, a method of operating a radar includes: generating a set of chirps; transmitting the set of chirps; receiving chirps corresponding to the transmitted set of chirps; using a finite state machine (FSM) to apply a phase shift to each of the transmitted chirps or each of the received chirps based on a code; and demodulating the received chirps based on the code.

公开(公告)号：US10761187B2

公开(公告)日：2020-09-01

申请号：US15950438

申请日：2018-04-11

Applicant: Infineon Technologies AG

Inventor： Avik Santra ,  Ashutosh Baheti ,  Andreas Dorfner ,  Youn Joo Kim ,  Raghavendran Vagarappan Ulaganathan ,  Thomas Finke

IPC: G01S7/41 ,  A47L9/28 ,  G01S7/282 ,  G01S7/295 ,  G01S13/89

Abstract: A device includes: a millimeter-wave radar sensor circuit configured to generate N virtual channels of sensed data, where N is an integer number greater than one; and a processor configured to: generate a 2D radar image of a surface in a field of view of the millimeter-wave radar sensor circuit based on sensed data from the N virtual channels of sensed data, where the 2D radar image includes azimuth and range information, generate a multi-dimensional data structure based on the 2D radar image using a transform function, compare the multi-dimensional data structure with a reference multi-dimensional data structure, and determine whether liquid is present in the field of view of the millimeter-wave radar sensor circuit based on comparing the multi-dimensional data structure with the reference multi-dimensional data structure.