公开(公告)号：US12220231B2

公开(公告)日：2025-02-11

申请号：US17612362

申请日：2020-12-28

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takeshi Nakayama ,  Shoichi Iizuka ,  Naoki Honma ,  Nobuyuki Shiraki ,  Teppei Hayashi ,  Kazuki Numazaki

IPC: G01S13/88 ,  A61B5/107 ,  A61B5/1171 ,  G01S3/14 ,  G01S7/02 ,  A61B5/00 ,  A61B5/0507 ,  A61B5/11 ,  G01S7/41 ,  G01S13/00 ,  G01S13/87

Abstract: An estimation device includes: M transmission antenna elements each transmitting a first transmission signal; N transmitter-receivers each including a reception antenna element and receiving, over a predetermined period, a first reception signal including a reflection signal that is the first transmission signal reflected by a first living body, using the reception antenna element; a memory storing training signals that are second reception signals obtained by causing the N transmitter-receivers to preliminarily receive second reception signals including reflection signals that are second transmission signals transmitted from the M transmission antenna elements to a second living body and reflected therefrom; a first vector calculator calculating a first vector for each training signal and each first reception signal by respective predetermined methods; and a circuit identifying the first living body or estimating an orientation of the first living body by a predetermined method, using correlation coefficients calculated from the first vectors.