公开(公告)号：US11372082B2

公开(公告)日：2022-06-28

申请号：US16711525

申请日：2019-12-12

申请人： DENSO TEN Limited

发明人： Hiroki Ishikawa

IPC分类号： G01S7/35 ,  G01S13/34 ,  G01S13/931 ,  G01S13/42 ,  G01S7/288

摘要： A signal processing device includes: an acquisition unit configured to acquire phase information of a reception signal of each of plural virtual antennas generated based on a combination of plural transmission antennas and plural reception antennas; a first calculation unit configured to calculate, based on the phase information, at least one first phase difference between the plural transmission antennas in an outward path along which a transmission wave transmitted from the plural transmission antenna reaches a target; a second calculation unit configured to calculate, based on the phase information, at least one second phase difference between the plural reception antennas in a return path along which a reflected wave reflected by the target reaches the plural reception antennas; and a determination unit configured to determine, based on the first phase difference and the second phase difference, whether the outward path and the return path match each other.

公开(公告)号：US11150338B2

公开(公告)日：2021-10-19

申请号：US16361625

申请日：2019-03-22

申请人： DENSO TEN Limited

发明人： Yasuhiro Kurono ,  Hiroki Ishikawa

IPC分类号： G01S13/68 ,  G01S13/931

摘要： An azimuth calculation device includes: an acquiring unit configured to acquire signals of plural receiving antennas of an antenna group in which the plural receiving antennas are arranged in each of a first axis direction and a second axis direction, based on reception signals received by the antenna group; a first azimuth calculation unit configured to perform a calculation of a direction of arrival of radio wave in the first axis direction based on the signals of the plural receiving antennas acquired; a vector decomposition unit configured to perform vector decomposition with respect to each of antenna arrangement positions in the second axis direction using a result of the calculation by the first azimuth calculation unit; and a second azimuth calculation unit configured to perform a calculation of a direction of arrival of radio wave in the second axis direction, using a result of the vector decomposition.

公开(公告)号：US11624819B2

公开(公告)日：2023-04-11

申请号：US16711666

申请日：2019-12-12

申请人： DENSO TEN Limited

发明人： Hiroki Ishikawa

IPC分类号： G01S13/72 ,  G01S7/288 ,  H04B7/0413

摘要： A signal processing device, includes: an azimuth estimation unit configured to estimate an arrival azimuth of a radio wave based on a reception signal of plural antennas; an estimated reception signal calculation unit configured to calculate an estimated reception signal based on an estimation result of the arrival azimuth, for comparison with the reception signal; a residual signal calculation unit configured to calculate a residual signal which is a difference between the reception signal and the estimated reception signal; and a determination unit configured to determine whether the estimation result of the arrival azimuth is correct based on the residual signal.